No country in Europe has as great an unemployment problem as Spain. From less than 5 percent in the mid-1970s, the unemployment rate has peaked at more than 20 percent in each of the last two economic slowdowns, without dropping below 15 percent in times of strong growth. From an analytical standpoint, the Spanish case is a fascinating, extreme example of the pan-European unemployment problem. From the policy perspective, it is essential to understand and attack labor market problems successfully in Spain if the unemployment crisis of the European Union (EU) is to be tackled, especially since the number of jobless in Spain in 1995 was higher than in the much larger EU countries of France, Italy, and the United Kingdom, and nearly as high as in Germany.

No country in Europe has as great an unemployment problem as Spain. From less than 5 percent in the mid-1970s, the unemployment rate has peaked at more than 20 percent in each of the last two economic slowdowns, without dropping below 15 percent in times of strong growth. From an analytical standpoint, the Spanish case is a fascinating, extreme example of the pan-European unemployment problem. From the policy perspective, it is essential to understand and attack labor market problems successfully in Spain if the unemployment crisis of the European Union (EU) is to be tackled, especially since the number of jobless in Spain in 1995 was higher than in the much larger EU countries of France, Italy, and the United Kingdom, and nearly as high as in Germany.

Broadly speaking, two competing schools of thought have existed in analyses of European unemployment over the last twenty years. One approach is to focus primarily on cyclical factors in generating unemployment, the implication being that macroeconomic shocks have caused unemployment to deviate from a (low) “natural” or nonaccelerating inflation rate of unemployment (NAIRU).1 Studies in this vein look to a series of adverse macroeconomic shocks to explain the high and persistent unemployment rates in Europe since the 1970s. The oil crises of the 1970s and the recession of the early 1990s are seen as triggers for increased European unemployment, exacerbated by high real interest rates that reduced investment (Bianchi and Zoega (1994)). At the other extreme is the hysteresis theory invoked by Blanchard and Summers (1986) and others, which argues that most of the unemployment increase is due to an increase in the NAIRU rather than in deviations therefrom. Indeed, in its most extreme form, hysteresis implies that every change in unemployment becomes an equilibrium, as structural features of the labor market translate temporary shocks into permanent changes in the natural rate of unemployment.

In Spain, where unemployment has not only shown large cyclical swings (rising nearly 9 percentage points during the last recession), but has also demonstrated remarkable persistence at very high levels, the traditional NAIRU concept loses much of its usefulness. Can one really argue that an estimated NAIRU of 18–20 percent (as some economists have recently calculated) is a meaningful indication of what unemployment rate is “natural” for Spain? At the same time, however, the full hysteresis argument ignores the undeniably large cyclical movements in unemployment while implicitly arguing for an even higher (albeit path-dependent) natural rate of unemployment.

For these reasons, the analytical approach taken in this chapter is something of an intermediate position between the extreme NAIRU view that unemployment has a clearly defined (relatively low) equilibrium rate to which it returns after macroeconomic shocks, and the extreme hysteresis view that unemployment is a random walk, with the equilibrium rate equal to the current unemployment rate in each period. A simple three-equation model of the labor market—a labor force equation, a wage determination equation, and an employment equation—is presented. By permitting several lags in the system of equations—and by allowing full interaction among the lags in the different equations—the model permits an examination of the degree to which unemployment is persistent, while allowing the identification of the sources of persistence in the different equations. This model structure implicitly assumes that the true nature of unemployment dynamics is a subtle combination of factors generating persistence and forces pushing toward equilibrium.

On the one hand, the structural nature of the system implies that there is indeed some underlying “equilibrium” level of unemployment in the economy, thus rejecting the extreme hysteresis view. On the other hand, by allowing for long and interactive lags, the issue of what the precise equilibrium rate is becomes less crucial than the structural features of the economy that produce the pattern of lags (Karanassou and Snower (1993)). Long lags have profound implications for the actual rate of unemployment; once the period of adjustment exceeds the average time between shocks (or the length of the average economic cycle), shocks can compound their effects and feed back on each other, generating unemployment persistence far beyond what one would expect from a simplistic analysis of the natural rate of unemployment vis-à-vis the country’s position in the economic cycle. Before one shock has worked its way through the labor market another has already arrived, producing a complex, dynamic evolution that may have little correlation with the underlying NAIRU. Indeed, the emphasis of the impact of labor market institutions on unemployment behavior focuses more on how structure affects the adjustment process (that is, the nature of the lags) than on structure as a determinant of some underlying natural unemployment rate.

Spanish Labor Market Since the Mid-1970s

The structure of the labor market has changed more profoundly in Spain than in any other Western European country in the past twenty years. No other country has seen its unemployment rate rise as dramatically and stay so persistently high. These two facts do not represent mere coincidence—in the profound transformation in the structure of employment relations (and the transformation of the Spanish economy more generally) lies much of the explanation for Spain’s dismal unemployment rate. Although Spain was buffeted by the same macroeconomic shocks as the remainder of Europe in the 1970s, these shocks alone do not provide a satisfactory causal explanation of the rise in unemployment from less than 5 percent in 1975 to 24 percent in 1994.

Employment, Unemployment, and the Labor Force

The performance of the labor market in Spain from 1975 through 1994 can be divided into three cyclical periods. During the first period, in the late 1970s and early 1980s, the second oil crisis produced several years of weak economic growth that in turn led to a sharp decline in employment. The unemployment rate rose sharply, rising from 7 percent in 1978 to over 20 percent in 1984, while the size of the labor force was relatively stagnant, growing at an average rate of only 0.5 percent a year. Despite the increase in unemployment, real wages continued to rise at nearly 1 percent a year.

The second period began in 1985, with Spain’s preparations to enter the European Community (EC). Spanish accession to the EC (in 1986) sparked a major economic recovery, with growth averaging 4.5 percent a year during 1986–90. This expansion, plus the Government’s introduction of flexible temporary labor contracts in 1984 (see next section), fueled an increase in employment averaging 3 percent a year. The unemployment rate fell from over 21 percent in 1985 to 16 percent in 1990. This drop in unemployment was smaller than might be expected from such strong employment growth as the result of a sharp acceleration in the growth of the labor force to 2.1 percent a year, primarily because of a significant increase in the participation rate for women. Real wage growth continued, albeit at the slower pace of 0.6 percent a year.

The overall changes in employment and unemployment do not do justice to the depth of the changes in the labor market, because they mask a profound shift in the nature of employment. The progressive opening of the economy accelerated a major transformation in the economic structure that had already begun in the 1970s. The role of agriculture and basic industry (for example, coal, steel, and shipbuilding) declined sharply, while modern industry and the services sector (particularly tourism and financial services) surged.2

The economy slowed in 1991 and entered into recession in the second half of 1992. The unemployment rate climbed rapidly to 24.6 percent by the third quarter of 1994—a peak-to-trough variation of more then 8 percentage points in less than three years. While labor force growth decelerated (to an average of 0.7 percent), most of the increase in unemployment came from a sharp drop in labor demand. Employment fell by 7 percent between 1991 and 1994. Until labor market reforms began to bite in 1994, real wages continued an unabated rise despite the enormous slack in the labor market.

Structure of the Labor Market

During the Franco period, Spain had a rigidly controlled labor market. Trade union activism was prohibited and the social security benefits of the modern welfare state were largely nonexistent. In their place was a set of labor regulations that rigidly defined working conditions and provided social protection by making it difficult to fire workers and providing generous severance pay for dismissals.

After General Franco’s death in 1975, the country underwent a major economic transformation that paralleled the political transition to democracy. The economy modernized rapidly, with sharp declines in traditional agricultural and basic industrial activity and the rise of modern manufacturing and services. The economy also opened to further international competition, culminating in accession to the EC in 1986.

Similarly profound changes occurred in the labor market, affecting every aspect of labor relations. The tight regulations on working conditions with their attendant restrictions on geographical and functional mobility were continued, but they were combined with the labor relations systems and the social protection of a modern welfare state. Trade unions became both legal and extremely active. Although union membership remains relatively low, the coverage of union-negotiated agreements was well in excess of 80 percent of all salaried workers by the late 1980s. After a series of national wage pacts in the late 1970s that kept industrial action and wage increases under control, collective bargaining moved largely to the sectoral level. Union activism surged, with Spain consistently among the European countries with the largest number of days lost to strike activity.

While the legal structure of dismissals did not change radically from the Franco era, the effective real costs of dismissals rose owing to the unions’ ability to negotiate collectively for better severance payments and owing to government-supported schemes to support workers on temporary redundancies and to help pay severance costs of those permanently dismissed. Average severance payments grew from just over 4.5 months of pay in 1981 to over 12 months of pay by 1993.

To this severance system was added an increasingly complete social protection system providing relatively generous unemployment benefits for dismissed workers and pensions for those injured, disabled, or retiring. Whereas in 1983–84 fewer than 30 percent of nonagricultural workers were eligible for unemployment compensation, by 1993 over 60 percent were receiving compensation. The size of unemployment benefits also grew substantially. Benefits per unemployed person grew by 30 percent in real terms between 1984 and 1993. These high benefit levels reflected a system under which workers were entitled to unemployment compensation with a generous replacement ratio of the previous salary, particularly during the first year of joblessness. The period of work required to become eligible for benefits was also quite short—six months of work entitled one to three months of benefits, with the same 2:1 ratio holding for longer periods on the job.

Not all developments in the 1980s increased the rigidity of the labor market. Whereas during the 1970s the minimum wage grew by 55 percent in real terms (an average real growth rate of 4.5 percent a year), that growth leveled off in the early 1980s, and there was actually a 6 percent real decline in the level of the minimum wage by 1990. In 1984, in response to the sharply rising unemployment rate, the Government liberalized the use of temporary contracts, permitting temporary workers (on contracts of up to three years) to do essentially the same work as permanent workers. Because temporary workers were not subject to the same hiring and firing conditions and their contracts effectively granted the firms greater functional and geographical mobility, this step significantly reduced rigidities for those firms using temporary workers. The growing number of temporary workers increased the dualism of the labor market, as the labor force became increasingly segregated into permanent and temporary “castes.”

As the Spanish economy slowed in 1991 and 1992 and unemployment again soared above 20 percent, it became increasingly clear that the labor market was in need of more profound reforms. In 1993 and 1994, the Government undertook a series of reforms designed to reduce unemployment compensation, facilitate workplace mobility, and reduce firing costs. Early results of these reforms appear to be favorable, but given the long response time in the labor market, it is premature to evaluate whether they will make a major contribution to the reduction of unemployment over the medium and long term.

In summary, the analysis of the causes of high and persistent unemployment in Spain must look to the interaction of two sets of factors. First, at the macroeconomic level, profound changes in the structure of the economy as a whole (opening to international trade, accession to the EC, the decline of agriculture and basic industry, and the rise of modern manufacturing and services) as well as sociodemographic changes in the size of the working-age population and the rise of female participation in the labor force have affected the labor market at least as profoundly as the macroeconomic shocks of the oil crises and the rise in real interest rates that are often cited as the source of European unemployment.3 Second, at the level of the labor market itself, Spain has experienced profound changes in the structure of labor market institutions that could have a major impact on the level and persistence of unemployment. During the past twenty years, Spain has seen the resurgence of trade union activism and the rise of the protection of a modern social welfare state and has reformed the legal framework for the labor market.

Basic Model

In this section, a basic three-equation labor market model is constructed and estimated for 1971—93. It contains variables designed to measure the interactions between labor supply, labor demand, and real wages. In keeping with the focus on examining not just the equilibrium relationship, but also the adjustment process, each equation uses a set of lags on both the dependent and independent variables to capture the dynamics of the labor market. This model will be used to determine the basic relationships among the key variables, as well as to pinpoint structural breaks that could be identified with known changes in labor market institutions. Unfortunately, good time-series data on many important policy variables over the entire sample period are lacking, so the estimations over this period are conducted using a simple specification. Making virtue out of necessity, however, these results provided interesting contrasts with those of the policy model estimated over the 1980s and 1990s as described in the next section.


The empirical specifications used here are based on an underlying right-to-manage type of wage and employment setting process.4 Potential workers decide unilaterally whether or not to enter the labor market based on the wage they can get if employed, the probability of employment, and sociodemographic factors exogenous to the model. To incorporate adjustment lags, lagged values on both the endogenous and the exogenous variables are permitted. Thus, the labor supply equation is as follows:


where LF is the labor force, W is the real wage, UR is the unemployment rate, and X is a vector of variables exogenous to the model that could affect the labor supply. For the basic version of the model estimated in this section, the only exogenous variable included is the working-age population.

The real wage is a variable jointly determined by bargaining between employers and trade unions. This bargain is affected by past real wages, by the unemployment rate, by labor productivity, and by a vector of exogenous variables (such as the reservation wage determined by unemployment benefits). The empirical specification of the real wage equation is as follows:


where PROD is labor productivity. For the basic version of the model estimated in this section, the only exogenous variable included is the minimum wage, under the assumption that minimum wage increases may have played a role in setting expectations for wage increases in the private sector.5

In accordance with the right-to-manage literature, once wages are determined in collective bargaining, employers are assumed to be free to set employment levels so as to maximize profits subject to the legal and institutional constraints of the Spanish labor market. Employment thus depends on past employment, real product wages (that is, the real wage of the worker plus social contributions paid by the employer), and a vector of exogenous variables as follows:


where E represents employment, and Wemp is the wage paid by the employer6. For the empirical specification in this section, the only “exogenous” variable included is GDP.

The model is closed by the following identities:




where TSS are social security taxes paid by the employer.7 As shown in equation (5), the unemployment rate term in the labor force and real wage equations indirectly incorporates the effects of employment on labor supply and of employment and labor supply on real wages. Although GDP is not explicitly modeled, it is treated as an endogenous variable and a simple GDP equation is included in the simulations in the section Structural Change and Unemployment: Persistence and Responsiveness.

Characteristics of the Data

The empirical analysis was conducted using quarterly data from 1971 through 1993. The data were obtained from the databases of the Bank of Spain, the Ministry of Economy, and the Organization for Economic Cooperation and Development (OECD). For GDP data, for which quarterly information was not available for the entire period, interpolations developed by the OECD were used. The data are not seasonally adjusted; rather, seasonal dummies are included in all of the regressions. All variables, except for the unemployment rate, are in logs.

The most important feature of the variables under consideration is their stationarity (or lack thereof). Hysteresis theories of unemployment imply that unemployment is a nonstationary variable, raising the issue of nonsta-tionarity of both employment and unemployment. An essential first step was to examine the variables to be used for the existence of unit roots. The results of Augmented Dickey-Fuller (ADF) tests on the variables to be included in the model in levels suggested that essentially all should be treated as nonstationary. From the unit root tests on the differenced variables, it appears that they may be treated as I(1).

Estimation Results

After initial exploratory regressions in ordinary least squares (OLS), the model was estimated as an autoregressive distributed lag (ARDL) model in levels using instrumental variables (IV) in order to find a cointegrating long-run relationship (Pesaran and Shin (1995)). The model was then estimated in error correction formulation in differences using instrumental variables when necessary to control for endogeneity.8 In estimation, a strictly empirical approach was taken to the structure of the lags. Up to eight lags of each endogenous variable were included in initial specifications, with only lags with robust significance being retained in the chosen specifications. In this respect, the model differs from a structural vector autoregression (VAR) model—where all variables would contain the same number of lags—because only significant lags were retained in the final specifications. Chow tests were undertaken to test for structural breaks in the model, and in preparation for estimating the policy model in this section, the basic model was estimated separately for the two subperiods of 1971–80 and 1981–93.

In addition to an examination of the regression coefficients of the error correction model, diagnostics are presented to analyze the dynamic response of each estimated equation to changes in explanatory variables and to shocks. A series of diagnostic statistics on the dynamics is also calculated. First, the “cross-persistence” of temporary shocks and the “cross-responsiveness” to permanent shocks of each equation are examined, building on the measures of persistence and responsiveness for unemployment developed by Snower and Karanassou (1995). These indicators basically measure the sum of the deviations of the dependent variable from its equilibrium; in other words, they are a normalized version of the integral of the impulse response curve. The measures used, and how they differ from those developed by Snower and Karanassou, are discussed in detail in the appendix. Second, information on the “half-life” of impulse responses is presented. The half-life of a permanent change is defined as the time required for one-half the change to be transmitted through to the dependent variable. For a temporary shock, the half-life is the time required for the dependent variable to reach one-half its maximum deviation from its original (and final) value.

Labor Force Equation

Economic models of the labor force are notoriously difficult, because many noneconomic factors affect labor force participation. The results presented here are no exception. Table 1 shows the long-run cointegrating relationships of the model, while Table 2 presents the preferred specification for the labor force equation in error correction form. The long-run relationship shows a positive coefficient on the working-population variable, but a negative one on the real wage. While somewhat surprising, the negative relationship is not inconsistent with rational utility maximization in the decision to participate in the labor force, as higher wages among primary wage earners may lead secondary household members to participate less through an income effect.9 The unemployment rate does not figure in the long-run relationship, because its coefficient was not robustly significant and the equation failed to cointegrate when it was included.

Table 1.

Long-Run Cointegrating Regressions for the Basic Model

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Notes: One asterisk means significant at the 5 percent level and two asterisks mean significant at the 1 percent level.Both the significance tests and the t-statistics should be taken as only rough guides to significance, since they do not make the adjustments necessary for Phillips-Hansen (1990) fully modified estimation of cointegrating relationships.

Calculated by combining the estimates for social security contributions and real wages.

Table 2.

Basic Model Results for the Labor Force Equation, 1972-93

(Lags shown in parentheses)

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Note: Dependent variable is D ln LF, estimated by OLS. None of the endogenous variables was significant in contemporaneous variables, so the estimation was done with OLS rather than IV.

Turning to the error correction specification, several features of the regression results stand out. First, it is interesting that the coefficient on the error correction term, while significant and carrying the correct sign, is quite small, implying relatively slow adjustment to the long-run relationship. Second, unemployment, which did not participate in the long-run relationship, plays a dynamic role. Lagged changes in unemployment on balance have a slightly negative effect on labor force participation growth, as do lagged changes in the rate of labor force growth. Although these results are not as strong as one would like, both the ARDL regressions producing the long-run cointegrating relationships and the error correction model regressions pass standard tests for misspecification, autocorrelation, normality of the errors, and heteroscedasticity.10

A clearer idea of the overall impact of the different explanatory variables on the labor force can be obtained by examination of the indicators of equaltion dynamics presented in Table 3. As can be seen, permanent wage and population shocks take a long time to manifest their full effects on the equilibrium labor force. For a real wage shock, after 8 quarters only one-half of the final effect has been transmitted, while for a population shock, it takes 35 quarters. A onetime shock to the labor force itself will be reversed over time as the long-run equilibrium relationship reasserts itself, but this process is a long one. It takes 13 quarters for one-half of the adjustment to occur. The data on responsiveness show that the accumulated deviations from long-run equilibrium from permanent changes are quite significant in the case of real wages, where the difference between the long-run equilibrium labor force and the sum of the actual values is 2.6 percent.

Table 3.

Indicators of Labor Force Equation Dynamics, Basic Model

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Temporary shocks to wages and unemployment have relatively small maximum effects on the labor force, while a (totally unrealistic) temporary jump in the working-age population has a large temporary effect on the labor force. Of course, because the unemployment rate is not in the long-run relationship, it has only temporary effects. In all of these cases, it takes one to two years for the effects of these temporary shocks to dampen down to half their maximum level. A temporary shock to the labor force itself has a half-life of 14 quarters.

Chow tests on the labor force equation show clear evidence of structural breaks, so the model was re-estimated for the sample divided at 1981. Both halves of the sample now show a negative relationship between wages and labor force participation, as well as a negative link between unemployment and labor force participation. There was also an important drop in the coefficient on the error correction term between the first and second half of the sample, suggesting a lengthening of the time required for the labor force to adjust to shocks.

Real Wage Equation

The long-run cointegrating relationship for real wages (Table 1) shows a strongly positive relationship between real wages and labor productivity, as one would expect. Unemployment has a small negative impact on wages that is only marginally significant statistically, suggesting that wages are largely insensitive to labor market conditions. There is a strong correlation between minimum wages and average wages in the long run, which, although it may be a statistical artifact, may also indicate that general wage increases follow trends set in increases in the minimum wage.

The error correction specification (Table 4) also shows a significantly positive relationship between productivity growth and wage growth. The relationship with the minimum wage also remains positive in differences. Changes in the unemployment rate fail to be significant and are excluded from the preferred specification. Lagged changes in the real wage exert a strongly negative effect on wage growth in the current period, reflecting a strong tendency to revert to trend after variations in wage growth rates. The coefficient on the error correction term is highly significant and relatively large. As was the case with the labor force variable, there is clear evidence of structural breaks in the equation, but other specification tests are passed.

Table 4.

Basic Model Results for the Real Wage Equation, 1972-93

(Lags shown in parentheses)

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Note: Dependent variable is D ln W, estimated by IV. Two asterisks mean significant at the 1 percent level.

Table 5 indicates that, as expected from the higher coefficient on the error correction term, the adjustment to a permanent shock is faster in the wage equation than in the labor force equation. Productivity shocks are the slowest in transmission into wages, with a half-life of more than three years. This lag is also reflected in the large negative responsiveness number, which indicates a cumulative deviation of –21 percent in wages after a productivity shock from the new equilibrium wage. Temporary shocks in the wage equation work themselves out relatively quickly, with half-lives of five quarters or less from shocks in all of the variables.

Table 5.

Indicators of Real Wage Equation Dynamics, Basic Model

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Employment Equation

The long-run employment equation is presented in Table 1. As expected, it shows a strongly positive relationship between GDP and employment (although the fact that the coefficient is larger than 1 is surprising). The product wage has the expected negative effect on employment, with a relatively large coefficient of -0.33.

The preferred specification for the error correction form of the model is presented in Table 6. Changes in GDP growth have a positive impact on employment growth. On balance, the evolution of the real product wage has a positive impact as well, in contrast to the long-run relationship. On balance, lagged values of the dependent variable have a slightly negative impact, with a long adjustment process implied (the sixth lag proves to be significant). The error correction term is significant and correctly signed, but the coefficient is quite small (only 0.1), which means that the adjustment to long-term equilibrium is quite weak. As with the other two equations, there is strong evidence of structural breaks in the model, but other statistical tests are passed, indicating no major problems with autocorrelation, heteroscedasticity, or misspecification of the equations.

Table 6.

Basic Model Results for the Employment Equation, 1972-93

(Lags shown in parentheses)

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Note: Dependent variable is D ln E, estimated by IV. Two asterisks mean significant at the 1 percent level.

Calculated by combining the estimates for social security contributions and real wages.

The dynamic of the employment equation is intermediate between the relatively quick adjustment displayed by the real wage equation and the slow adjustment of the labor force equation. As can be seen from Table 7, half-life adjustments to shocks generally take one and a half to two and a half years, with the adjustment to output shocks somewhat quicker. Of particular interest is the dynamic of an adjustment in the product wage, which, despite its large long-term effect, demonstrates relatively slow adjustment to shocks. The responsiveness to permanent shocks is particularly poor.

Table 7.

Indicators of Employment Equation Dynamics, Basic Model

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Results of the Basic Model

The evidence of structural breaks in the equations, together with the unexpected negative relationship between wage and labor force participation, suggests that the exact results of this preliminary analysis should be interpreted with caution. Nevertheless, the results are strong enough to warrant several interesting qualitative conclusions. The most telling of these is the evidence that long lags in the adjustment of the labor market to shocks play a crucial role in sustaining high unemployment. The half-life numbers presented suggest that it takes between 3 and 35 quarters for one-half of the final effect of a permanent shock in an explanatory variable to be felt in the corresponding dependent variable. The numbers are even more striking as regards the time taken for 90 percent adjustment. For example, a permanent output shock takes over six years to manifest 90 percent of its final effect on employment; a permanent working-population shock (for example, the Spanish baby boom) takes 63 quarters (15.75 years) to manifest 90 percent of its final effect on the labor force; a permanent wage shock takes four years to show 90 percent of its final effect on the wages themselves, over eight years to show 90 percent of its final effect on employment, and nearly ten years for the labor force equation. While the exact values of these lags should not be relied upon, they are broadly consistent with other recent work on adjustment lags in Spain11 and clearly justify the conclusion that adjustment is extremely slow. Chart 1 shows graphically the adjustment process for some of these key permanent shocks to give an idea of the full dynamics of adjustment in each equation.

Chart 1.
Chart 1.

Spain: Basic Model: Impulse Response Graphs for Permanent Shocks to Key Variables

(Index, initial position = 100)

The second interesting insight from the basic model is the striking lack of sensitivity of the labor market to the unemployment rate. Unemployment has no long-run and little short-run impact on the labor force and has a minuscule effect on real wages, suggesting that the labor market does not contain a strong self-correcting tendency in the face of high unemployment.

Even in this basic model, sociodemographic factors and policies and institutions of the labor market itself play a very important role in labor market outcomes. The increase in the working-age population coupled with changes in attitudes toward female labor force participation, which produce a coefficient on the population variable that is larger than unity, have clearly contributed to the rise in unemployment. In the two policy variables included in the basic model (the minimum wage and the tax wedge of social security contributions), there is strong evidence that institutional factors have also played an important role in pushing up product wages and reducing employment.

Finally, the instability of the coefficients of the basic model highlights the importance of structural changes in the labor market in Spain. This phenomenon will be explored in more detail in the next section.

Policy Model

The results of the basic model, while providing some general information about the behavior of the Spanish labor market, are unsatisfactory for several reasons. First, the model is econometrically deficient owing to clear structural breaks (undoubtedly produced by the changes in the structure of the labor market since the early 1970s). Second, from a more conceptual standpoint, the basic model does not explain well the causes of Spanish unemployment. The institutional features of the labor market discussed as potential factors in generating high unemployment are not really modeled. These weaknesses motivate the development of another version of the model, where the structural problems and unanswered causal questions of the basic model can be addressed.

Additional Variables

The “policy” model has the same general form as the basic model but with the addition of a series of variables designed to capture explicitly some of the institutional features of the labor market that could have played a role in generating persistent unemployment in Spain. Including these aspects of the labor market structure makes the model less susceptible to structural breaks in the coefficients. The model is estimated only for 1981–93; this shorter time series also makes it less likely to suffer from structural breaks than the 1971–93 period used in the basic model because it excluded the Franco era and democratic transition in the 1970s. However, this restricted sample has the disadvantage of excluding the initial rise in unemployment in the wake of the oil shocks of 1973–74 and 1979–80, but the data for most of the key policy variables included do not reach back into the 1970s.

The basic labor force equation in the policy model includes two variables in addition to those in the basic model—the average level of disability pensions and the replacement ratio of unemployment compensation. Disability pensions would be expected to decrease the labor force directly because people granted disability benefits leave the labor force, but, in addition, a negative relationship is to be expected between the level of benefits and the labor force because some firms in Spain have used pensions as an alternative to redundancies. The disability pension variable may also capture some of the effect of retirement pensions on the labor force.12 The inclusion of the replacement ratio variable reflects the incentives a person may have to remain in (or enter) the labor force despite high unemployment. High unemployment benefits could prevent discouraged workers from leaving the labor force or could provide incentives for entering the labor market.13

The wage equation includes two new policy-related variables—the replacement ratio of unemployment benefits and the share of temporary workers in the labor force. The replacement ratio reflects the reservation wage of workers, and hence should have a positive impact on collectively bargained wages. It is not clear ex ante whether the presence of temporary workers would increase or decrease average wages. On the one hand, because temporary workers tend to be paid less than their permanent counterparts, there is a composition effect that would cause the average wage to decline as the share of temporary workers increases. On the other hand, the presence of temporary workers may exacerbate insider-outsider problems by making permanent workers less susceptible to redundancies (see Bentolila and Dolado (1994); Jimeno and Toharía (1993)). Finally, the minimum wage is included as with the basic model.

In estimating the employment equation, three policy variables were added to the variables included in the basic model. Two relate to labor market relations between worker and employers, one measuring days lost to strike action and the other measuring the coverage of trade union agreements. The strike activity variable reflects a clear nonwage cost to employers that could negatively affect their level of employment. The coverage of union agreements may also affect employment levels by constituting a direct labor cost, or, through wages, an indirect cost. The third policy variable, severance pay, measures the real value of severance pay settlements as a means of exploring the impact of dismissal costs on employment levels. In addition, in order to examine the effect of government policies on labor market taxation, the product wage variable has been split into its constituent parts—a real social contribution costs variable (TSS) and the real wage as perceived by employees.

Estimation Results

As with the model in the previous section, the policy model was initially explored in OLS, with regressions subsequently run in error correction form using, where necessary, instrumental variables and including cointegrating long-run relationships. The long-run relationships are shown in Table 8, with the error correction models of the individual equations shown in Tables 911.

Table 8.

Long-Run Cointegrating Regressions for the Policy Model

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Notes: One asterisk means significant at the 5 percent level and two astetisks mean significant at the 1 percent level.Both the significance tests and the t-statistics should be taken as only rough guides to significance, since they do not make the adjustments necessary for Phillips-Hansen (1990) fully modified estimation of cointegrating relationships.

The critical value for this test is about 3.9, so there is not conclusive evidence of cointegration. Nevertheless, the same model without the inclusion of the dummy variables does unambiguously cointegrate. On this basis, and in light of the characteristics of the residuals to the regression, cointegration is accepted.

Table 9.

Policy Model Results for the Labor Force Equation, 1981-93

(Lags shown in parentheses)

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Notes: Dependent variable is D ln LF, estimated by OLS. None of the endogenous variables was significant in contemporaneous variables, so the estimation was done with OLS rather than IV.
Table 11.

Policy Model Results for the Employment Equation, 1981-93

(Lags shown in parentheses)

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Notes: Dependent variable is D ln E, estimated by IV. Two asterisks mean significant at the 1 percent level.

Labor Force Equation

As seen in Table 8, wages and the labor force show a significant positive relationship in the long run, in contrast to the negative sign given in the basic model. The idea that higher wages draw more labor force participation is more intuitively satisfactory than the negative sign found previously. The positive long-run relationship between working-age population and the labor force is also strongly significant, as expected. The fact that the size of the coefficient is even larger than in the basic model probably reflects the accelerating trend of the incorporation of women into the labor force in the 1980s compared with the 1970s. Turning to the policy variables, there is a small but significant positive effect of the replacement ratio on labor force participation, while the generosity of disability pension benefits holds the expected negative correlation with participation. The unemployment rate showed no significant relationship, and was excluded from the preferred specification.14

The error correction version of the model is shown in Table 9. Wage growth has the expected significant positive effect on the labor force. The two policy variables also hold significant signs in the expected direction, with increasing disability pensions decreasing the labor force, while the growth replacement ratio increases it. The error correction term also has the expected sign. In contrast, short-run fluctuations in the working-age population paradoxically decrease the labor force. As in the basic model, changes in the unemployment rate have virtually no net effect.

An examination of the summary statistics on equation dynamics in Table 12 shows that the half-lives of the responses to permanent shocks are smaller than those for the basic model, while the speed of adjustment to temporary shocks is somewhat longer. The speed of adjustment to shocks in the labor force itself seems to have improved significantly. This phenomenon appears for all of the policy model equations, as well as for the dynamics of the system as a whole (see section on structural change and unemployment). This apparent improvement should not, however, be interpreted as reflecting better real adjustment; rather, the structural variables included reduce the coefficients on the lagged dependent variables because they are accounting for some of the causes of delayed adjustment.15

Table 12.

Indicators of Labor Force Equation Dynamics, Policy Model

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Real Wage Equation

The long-run determinants of wages (Table 8) show the expected strong positive correlation between productivity and wage growth. In contrast to the basic model, the coefficient is less than 1, implying that not all productivity improvements are translated into wages. This result is consistent with the general increase in profit margins experienced in Spain in the 1980s. Unemployment has a significantly negative effect on wages, although the size of the effect is small. The minimum wage continues to have a positive effect on real wages; however, the size of this pass-through effect is smaller than in the basic model. Turning to the policy variables introduced in this version of the model, increases in the replacement ratio increase wages as expected. Interestingly, the share of temporary workers in the labor force on balance exerts a moderating effect on wages, suggesting that the composition effect of lower wages paid to temporary workers dominates the insider-outsider effect that more temporary workers could have on wage bargaining.

The error correction version of the real wage equation, shown in Table 10, provides stronger results than those of the labor force equation. Real wage increases tend to perpetuate themselves into the future, as demonstrated by the net positive impact lagged wage growth has on current wage increases. The error correction coefficient is large and highly significant, suggesting a rapid adjustment to the long-run real wage path. Changes in the replacement ratio have a significantly positive impact on wage growth, as in the long-run relationship. The share of temporary workers in the workforce has a short-run positive effect compared with its long-run negative effect. Changes in the unemployment rate, in productivity, and in the minimum wage have short-run effects that also run counter to their long-run relationship with real wages. Unemployment growth lagged one quarter is positively linked to wage increases, while the coefficient on lagged productivity is of only marginal significance statistically.

Table 10.

Basic Model Results for the Real Wage Equation, 1971-93

(Lags shown in parentheses)

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Notes: Dependent variable is D ln W, estimated by OLS. None of the endogenous variables was significant in contemporaneous variables, so the estimation was done with OLS rather than IV.

As with the labor force equation, the real wage equation of the policy model shows faster adjustment than with the basic model, as demonstrated by the shorter half-lives and less negative responsiveness numbers (see Table 13). This is particularly true of the response of the real wage to a real wage shock. Temporary shocks, in contrast, tend to have longer half-lives than in the basic model. This is a result of the functional form of the equation, which induces a behavior that oscillates around the final values. These oscillations take time to settle down, hence the long half-lives despite small net persistence statistics.

Table 13.

Indicators of Real Wage Equation Dynamics, Policy Model

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Employment Equation

One of the most striking results of the long-run regression on the employment equation is the weakness of the relationship between wages and employment (Table 8). Although the variable has the expected negative sign (unlike in the basic model), it is not significantly different from zero according to standard t-tests. Social security contributions, in contrast, demonstrate a strongly negative effect on employment. GDP holds a positive relationship with employment of approximately one to one, implying little or no long-run labor productivity growth. The three policy-related variables included in the regression all maintain a significant relationship with employment. Severance pay is negatively related with employment, as is strike activity. The coverage of collective bargaining agreements is also related negatively with employment.

The error correction version of the employment equation is presented in Table 11. As with the real wage equation, the error correction term is large and highly significant. Changes in employment tend to persist over time, as evidenced by the positive net relationship between current employment growth and its lagged values. Social security taxes retain the negative relationship with employment in differences that they have in the long-run regression, while wages have a very small negative effect on employment growth. GDP growth has an unexpected negative relationship with employment growth over the short run. Changes in the coverage of collective bargaining agreements have a negative impact on employment growth, while strike action has a very small positive effect. Severance pay was not significant in the short-run regressions and was excluded from the preferred specification.

Table 14 shows a faster speed of adjustment in the policy model compared with that of the employment equation in the basic model. The time for one-half of the adjustment is less than one and a half years, although the oscillations in employment caused by shocks in several of the explanatory variables (for example, social security taxes, collective bargaining, and strike days) led to considerable overshooting that is not reflected in the summary statistics.

Table 14.

Indicators of Employment Equation Dynamics, Policy Model

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Results of the Policy Model

One important conclusion of the three equations in the policy model is that labor market structure does indeed play an important role in the underlying long-run equilibria of employment, real wages, and the labor force, as well as in the dynamics. In addition to confirming that increases in the minimum wage appear to contribute to upward pressure on overall real wages, there is also evidence that other key social and labor market policies of the government affect employment, wages, and the labor force. The policy effects can be summarized as follows:

  • Higher minimum wages push up real wages overall.

  • Higher employer social security contributions reduce employment.

  • Higher average disability pensions reduce the labor force.

  • Increases in the generosity of unemployment benefits contribute to higher unemployment by increasing the labor force and also help generate higher real wages.

  • The liberalization of temporary contracts has dampened wage increases.

  • Higher severance pay reduces employment.

  • More labor conflicts (as measured by strike days) reduce employment.

  • Greater coverage of collective bargaining agreements reduces employment.

Each of these effects is statistically significant. The impression that institutional variables are crucial to understanding the Spanish labor market is reinforced by the fact that the policy model equations are much more econometrically stable than those of the basic model. Comparing the basic model, run over the same sample period, with the policy model confirms that much of the slow adjustment captured in the basic model is due to the effects of the institutional variables included in the policy model.

The second key insight emerging from the policy model is the lack of responsiveness of the Spanish labor market to traditional market clearing forces. Unemployment has little effect on the decision of potential workers to enter the labor force, nor does it have much impact on moderating wages (the coefficient is significant but small). Even more striking is the fact that the expected negative effect of real wages on employment is not strongly present. The variable has the expected negative sign, but it is not statistically significant. Thus, not only are real wages insensitive to the level of slack in the labor market, but employment itself does not unambiguously respond to the wage.

Structural Change and Unemployment: Persistence and Responsiveness

So far in this chapter, the static and dynamic characteristics of each equation in the three-equation model have been analyzed separately. This exercise yields interesting information, but it ignores the possibility that changes in one equation could feed back into other equations in the model, prolonging the adjustment process. The specifications chosen for both the basic model and the policy model provide several channels for such interequation effects: changes in employment generate effects in wages via the unemployment rate; changes in the labor force affect unemployment, which feeds into the wages; changes in real wages could affect both the labor force and employment, and so on. Recognizing the endogeneity of GDP to this labor market model, additional avenues of feedback become apparent. Output and employment are simultaneously determined and, through labor productivity, they affect wages. To test the importance of these feedback effects and obtain a more complete idea of the overall speed of adjustment of the labor market to shocks, simulations were conducted for the system as a whole for both the basic and policy models following the methodology of Snower and Karanassou (1995).

To simulate the model as a complete system, it was necessary to develop a simple equation for GDP. A simple Cobb-Douglas style output equation was estimated as follows:


where K is the capital stock and t is a simple trend term. For the purposes of the simulations, increases in real wages are assumed to affect both the consumption wage and the level of social security contributions (effectively assuming that social security contribution rates remain constant).

Using this four-equation system, a shock was administered to the model so that the persistence and responsiveness measures for the full system could be observed. In these simulations the employment equation was shocked by 1 percent, and the Snower-Karanassou measures of persistence and responsiveness for the level of unemployment itself were calculated. For the basic model, a temporary shock yields a persistence of 32.6, with a half-life of 32 quarters.16 A permanent shock has a persistence measure of—1,439, with a half-life of 22 quarters (Chart 2). The chart confirms that a significant proportion of the adjustment takes place several years after the initial shock. Indeed, for a permanent shock, it takes 80 quarters (20 years) for 90 percent of the final impact of the shock to appear, while for a temporary shock it takes nearly as long—75 quarters (18.7 years).17 With the recovery period from shocks lasting considerably longer than the average business cycle, the dynamics of unemployment become extremely complex, with the unemployment effects of one recession beginning before the effects of the previous one have become fully manifest. With this dynamic pattern, the whole concept of “natural” rate of unemployment can be called into question.

Chart 2.
Chart 2.

Spain: Basic Model: Impulse Response Graphs for the Model as a Whole

(Index, initial position = 0)

The results of the basic model confirm the central assertion of this chapter—that feedback both within and between equations produces a situation where the adjustment to labor market shocks is extremely slow in Spain. The additional delays in adjustment from the interaction among equations can be clearly seen by comparing the 32-quarter half-life for an employment shock as a whole with the 7-period half-life of a temporary employment shock on the employment equation alone. The shock to employment affects output, which feeds back to employment and wages (through a countercyclical increase in productivity); higher wages affect the labor force and, through product wages, feed back into employment, maintaining the high unemployment rate.

The adjustment to shocks is not only slow relative to the adjustment of the individual equations, it is also slow relative to other European countries discussed in other chapters. For a temporary shock, a comparison of the persistence and half-life measures with those of the other major European countries shows that the half-life is longer than those for Germany (six and a half years), Italy and the United Kingdom (five years), and France (three years). The persistence measure is also the highest, tied with the United Kingdom and well above those for the other major EU countries. For a permanent shock, the same conclusion holds—the adjustment time for Spain is significantly longer than for the other major European economies.

Turning to the policy model, there appears to be either a contradiction with the basic model or a marked improvement in the speed of adjustment of the Spanish labor market in the 1980s and early 1990s compared with that in the 1970s (reflected in the basic model)—a persistence of 10.3 with a half-life of 13 quarters for a temporary shock. As shown in Chart 3, the pattern of both the permanent and temporary shock dynamics is similar to the basic model, but the size of the reactions is smaller and the time scale is compressed. For a permanent shock, responsiveness is –102.4, with an adjustment half-life of 11 quarters. While it remains true that adjustment is slower for the system as a whole than for the individual equations (13 quarters versus 4 for the employment equation alone), the Spanish results now compare reasonably well with those for the other major European countries. This does not mean that adjustment is quick. To achieve 90 percent recovery from a temporary shock, it still takes eight and a half years, while 90 percent adjustment to a permanent shock takes six years.

Chart 3.
Chart 3.

Spain: Policy Model: Impulse Response Graphs for the Model as a Whole

(Index, initial position = 0)

These speeds of adjustment, while considerably faster than in the basic model, are slow enough that they do not alter the qualitative conclusions of the basic model. Furthermore, as argued above, the contradiction is more apparent than real. Under the policy model, adjustment to “equilibrium” unemployment is indeed more rapid than under the basic model, but it is an adjustment to an equilibrium level that is driven higher by the inexorable increase during the 1980s of labor market policies that induced unemployment to persist. In other words, the basic model indicates that unemployment persists in Spain; the policy model indicates that this persistence is due to the persistence (and even increasing rigidity) of labor market institutions (including unemployment benefits, severance pay, minimum wages, and social contributions).18


This paper has presented two main contentions. First, it was argued that the dynamics of labor market adjustment constitute an important part of the explanation of the size and persistence of unemployment. This is amply demonstrated by the results of the basic model, where an external shock can take eight years just for one-half of the eventual effects to manifest themselves—the slowest adjustment rate among major European countries.

The second main conclusion points to the causes of this observed persistence in unemployment and the associated poor adjustment dynamics of the labor market. Profound structural changes have affected the economy, as have long-term sociodemographic factors (indicated by the significance and greater-than-unity size of the coefficient on the population variable), as confirmed by the results obtained in the empirical analysis. The comparison of the basic model with the policy model suggests that the persistence of unemployment observed in the basic model is due to the persistence of certain variables linked to the structure and policies governing the labor market in Spain (such as labor taxation, replacement ratios of unemployment benefits, minimum wages, collective bargaining, and the share of temporary contracts). Furthermore, the evidence on the importance of the policy variables in the regressions suggests that policies themselves have played a role not just in sustaining, but in generating high unemployment beyond the role of any external shocks.

Only a significant change in these features of the labor market generating and sustaining high unemployment can lead to a substantial reduction in Spanish unemployment. The Government made a start in 1993–94 with significant reforms in unemployment benefits, changes in certain rigidities in hiring and firing, and improvements in the flexibility in using the workforce. These reforms are slowly bearing fruit in terms of lower unemployment and more flexible real wages, but it is likely that many additional changes will have to be undertaken if unemployment in Spain is to fall to the European average or below.

Appendix: Simple Measures of Cross-Persistence and Cross-Responsiveness

Snower and Karanassou (1995) define unemployment persistence as the sum of the deviations of unemployment from its initial value from an employment shock as follows:


where Δε0 is the shock in period 0. To obtain a measure of persistence for shocks in explanatory variables, this indicator must be modified since it is unclear what the denominator would be because the shock is the domain of a variable different from the reaction. To solve this, it is normalized by the equilibrium value of the dependent variable rather than by the shock itself. Thus, the cross-persistence measure of deviations in the dependent variable, y, owing to a shock in variable x, is as follows:


where y0 is the value of the dependent variable before the shock to x. Where persistence is measured due to a shock in the dependent variable, πyy is related to Snower-Karanassou persistence (πsk) by the following relationship:


for responsiveness to a permanent shock, the Snower-Karanassou measure is


where u bar is the long-run equilibrium value. Here again, the Snower-Karanassou measure has to be modified to measure the cross-responsiveness effect of one variable on another, although here the modification is more minor. The difference between the initial and final equilibrium values is used to normalize as follows:


For responsiveness to shocks in the dependent variable in a single-equation error correction model, this measure would be identical to the corresponding Snower-Karanassou responsiveness measure (although this might not be true for a system of equations where feedback effects from other equations could cause the long-run change in the dependent variable to be larger than the shock).

The Authors

S.G.B. Henry is Professor of Economics at the London Business School. He has contributed extensively to the literature on empirical macroeconomics.

Dennis J. Snower is Professor of Economics at the Birkbeck College of the University of London. A well-known authority on labor market issues, he has on several occasions been a Visiting Scholar with the IMF.

Charalambos A. Christofides is an Economist in the Southern European Division I of the IMF’s European I Department.

Jeffrey R. Franks is an Economist in the Southern European Division II of the IMF’s European I Department.

Karl F. Habermeier is Senior Economist in the Western European Division of the IMF’s European I Department.

Marika Karanassou is a graduate student in economics at the University of London.

Paolo Mauro is an Economist in the Southern European Division II of the IMF’s European I Department.

Tessa van der Willigen is Deputy Division Chief in the IMF’s Policy Development and Review Department.


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Note: The author wishes to thank Brian Henry for helpful comments throughout the development of the paper. Discussions with the other participants in the unemployment project—Gharalambos Gristofides, Karl Habermeier, Paolo Mauro, Ramana Ramaswamy, and Tessa van der Willigen—were also of great help. Marika Karanassou assisted with the policy simulations. All errors are my own.


Friedman (1968) coined the term “natural rate of unemployment,” which was subsequently used extensively in the so-called New Classical Economics school of thought.


See Franks (1994) for a detailed discussion of the effects of these structural changes on the labor market in Spain.


See Bean (1994) for a review of explanations of European unemployment.


See Booth (1995), pp. 124–28 for an exposition of the right-to-manage model. Oswald and Turnbull (1985) provide empirical evidence in support of the right-to-manage assumption for the United Kingdom.


Minimum wages may not be a completely exogenous variable, because there is often an implicit or explicit linkage between average wages and the setting of the minimum wage. In Spain, there appears to have been some effort to maintain the minimum wage as a share of the average wage in the mid-1970s, but not since then. Nevertheless, in the estimation of the model, the minimum wage variable was included with a lag to avoid a possible simultaneity problem. See Dolado and others (1996) for an in-depth discussion of the effect of minimum wages on employment.


This employer wage is not a fully fledged product wage because for simplicity it is deflated by the consumer price index (CPI) rather than by some producer price index. Nevertheless, because the CPI and producer prices are highly correlated, the results differ little if a pure product wage is used.


While for the basic model in this section the model results are reported for the employers’ wage as a whole, in the policy model in the following section, the wage and security contribution variables are included separately, allowing their coefficients to differ.


The preferred specification was also estimated simultaneously using full information maximum likelihood (FIML) techniques to compare with the instrumental variables results. The FIML results did not differ substantially from those of the IV error correction model (ECM) specification reported below.


Interestingly, when the sample is split and the same regression is run separately over 1972–80 and 1981–93, the negative relationship between wages and labor force participation disappears, particularly for the second half of the sample, implying that there may have been an exogenous change in the social attitudes regarding households’ work-leisure trade-off. Indeed, exogenous shifts in the labor force participation of women would have precisely the effect of shifting the quantity of labor offered by the household at a given income level. Thus, while in the early period, households may have been at or close to the backwardbending section of their labor supply curves, exogenous changes in female participation made the elasticity of the labor supply to the real wage highly positive in the 1980s and 1990s.


The following tests were performed in PC-Give on both the ARDL specification and on the error correction equation: the Lagrange multiplier test for nth order autocorrelation; the Autoregressive Conditional Heteroscedastic (ARCH) test; the x2 test for normality of the residuals; the x2 test for heteroscedasticity and correct functional form; and the Ramsey regression specification (RESET) test.


Dolado and López-Salido (1996) use a conventional VAR approach to look at the response of output, unemployment, and wages to different types of macroeconomic shocks. Their results indicate that the half-life adjustment of these variables is on the order of three to five years. As with the results obtained here, the adjustment to labor supply shocks tends to be even slower.


Controls on disability pensions were fairly weak until the 1990s; there is substantial anecdotal evidence of firms using temporary disability classifications of workers as an alternative to redundancies for younger workers. For older workers, early retirements were often used with official acquiescence. This effect may also be captured by the disability pension variable.


First-time entrants into the labor force are not eligible for unemployment benefits. Nevertheless, the future availability of unemployment benefits will certainly have a positive impact on the expected value of entering the labor force, especially since there has been a large amount of rotation between temporary jobs and unemployment since temporary contracts were liberalized in 1984.


It should be noted, however, that the long-run regressions do not unambiguously cointegrate. See the footnote to Table 8.


In the basic model, own variable persistence and responsiveness measures capture the adjustment effects of the structural features of the labor market that are separately modeled in the policy model. To illustrate this effect, consider the comparison between a simple autoregression versus an autoregressive equation with additional structural variables. If one calculates the adjustment speed of the simple autoregressive model compared with the model that includes structural variables, the autoregressive model will necessarily show slower adjustment (that is, higher coefficients on the lagged terms) because the autoregressive terms are picking up some of the effects of the persistence of the omitted structural variables. One should not, however, conclude that the impulse response functions shown in the basic model are useless because they come from a model that suffers from omitted variable bias and is therefore misspecified. By that criterion, virtually every VAR would also be classified as useless as a result of misspecification because VARs do not include potentially important structural variables. Rather, the impulse response functions should be seen as illustrative of the adjustment time required as a result of a shock given the “average” underlying levels of the structural variables over the period of the regression.


The Snower-Karanassou persistence measure used here is slightly different from that used in the measures of persistence used for shocks to the individual equations in previous sections. See the appendix for details.


Once again, it should be emphasized that the exact values of the adjustments should be treated cautiously owing to the inadequacies of the basic model; nevertheless, it is safe to conclude generally that adjustment is extremely slow and that adjustment times lengthen when interequation effects are taken into account.


The models of the other countries used in the comparison are actually more similar to the basic model than to the policy model, so that the basic model is the more appropriate reference point.

  • View in gallery

    Spain: Basic Model: Impulse Response Graphs for Permanent Shocks to Key Variables

    (Index, initial position = 100)

  • View in gallery

    Spain: Basic Model: Impulse Response Graphs for the Model as a Whole

    (Index, initial position = 0)

  • View in gallery

    Spain: Policy Model: Impulse Response Graphs for the Model as a Whole

    (Index, initial position = 0)