Migration and imperfect labor markets: Theory and cross-country evidence from Denmark,Germany and the UK

We investigate the labor market effects of immigration in Denmark, Germany and the UK, three countries which are characterized by considerable differences in labor market institutions and welfare states. Institutions such as collective bargaining, minimum wages, employment protection and unemployment benefits affect the way in which wages respond to labor supply shocks, and, hence, the labor market effects of immigration. We employ a wage-setting approach which assumes that wages decline with the unemployment rate, albeit imperfectly. We find that the wage and employment effects of immigration depend on wage flexibility and the composition of the labor supply shock. In Germany immigration involves only moderate wage, but large unemployment effects, since immigrants are concentrated in labor market segments with low wage flexibility. The reverse is true for the UK and Denmark.     

Collective bargaining,firm heterogeneity and unemployment

We compare labor market outcomes under firm-level and sector-level bargaining in a one-sector Mortensen-Pissarides economy with firm-specific productivity shocks. Our main theoretical results are two-fold. First, unemployment is lower under firm-level bargaining, due both to a lower job destruction rate and a higher job-finding rate. Key to this result is the interplay between firm heterogeneity and wage compression under sector-level bargaining. Second, introducing efficient opting-out of sector-level agreements suffices to bring unemployment down to its level under decentralized bargaining.     

Shocks and rigidities as determinants of CEE labour markets’ performance

In this article, the impact of real wage, productivity, labour demand and supply shocks on eight Central and Eastern European (CEE) economies from 1996–2007 is analysed with a panel structural vector error correction model. A set of long‐run restrictions derived from the dynamic stochastic general equilibrium (DSGE) model is used to identify structural shocks, and fluctuations in foreign demand are controlled for. We find that the propagation of shocks on CEE labour markets resembles that found for OECD countries. Labour demand shocks emerge as the main determinant of employment and unemployment variability in the short‐to‐medium run, but wage rigidities were equally important for observed labour market performance, especially in Poland, Czech Republic and Lithuania. We associate these rigidities with collective bargaining, minimum wage, active labour market policies and employment protection legislation.     

More on unemployment and vacancy fluctuations

Shimer [Shimer, R., 2005a. The cyclical behavior of equilibrium unemployment and vacancies. American Economic Review 95 (March), 25–49] argues that the textbook equilibrium search model of unemployment explains less than 10% of the volatility in US vacancies and unemployment when fluctuations are driven by productivity shocks. His paper as well as other recent work inspired by it are reviewed and extended here. Although there seems to be excessive feedback from the job-finding rate to the wage built into the Nash bargaining mechanism assumed to determine wages in the model, we argue that he and others overemphasize the need for wage rigidity to explain the data on labor-market fluctuations. Indeed, a modified version of the model can explain the magnitude of the empirical relationship between the vacancy–unemployment ratio and labor productivity when wages are the outcome of a strategic bargaining game and when the elasticity of the matching function and the opportunity cost of a match are set at reasonable values. The modified model also explains almost two thirds of the volatility in the ratio relative to that of productivity when separation shocks are taken into account, as well as the strong negative correlation between vacancies and unemployment found in Shimer's data.     

Working capital requirement and the unemployment volatility puzzle

Shimer (2005) argues that a search and matching model of the labor market in which wage is determined by Nash bargaining cannot generate the observed volatility in unemployment and vacancy in response to reasonable labor productivity shocks. This paper examines how incorporating monopolistically competitive firms with a working capital requirement (in which firms borrow funds to pay their wage bills) improves the ability of the search models to match the empirical fluctuations in unemployment and vacancy without resorting to an alternative wage setting mechanism. The monetary authority follows an interest rate rule in the model. A positive labor productivity shock lowers the real marginal cost of production and lowers inflation. In response to the fall in price level, the monetary authority reduces the nominal interest rate. A lower interest rate reduces the cost of financing and partially offsets the increase in labor cost from a higher productivity. A reduced labor cost implies the firms retain a greater portion of the gain from a productivity shock, which gives them a greater incentive to create vacancies. Simulations show that a working capital requirement does indeed improve the ability of the search models to generate fluctuations in key labor market variables to better match the U.S. data.     

Wage bargaining, labor-tax progression, and welfare

This paper analyzes the effect of labor-tax progression on employment and welfare in an economy with a unionized labor market. The government influences wage bargaining through its tax policies. Wages can be reduced by increasing the marginal labor-tax rate. If there are no restrictions on profit taxation, a first-best optimum with full employment is realized; this first-best optimum can always be implemented by a progressive tax schedule. If profit taxation is restricted, unemployment may arise. For this case, we show that the welfare-maximizing degree of tax progression is influenced by a variety of factors, in particular the wage elasticity of labor demand, the distribution of bargaining power, and the existence of unemployment benefits. Examples are given for both progressive and regressive tax structures. Comparative-static analysis reveals that a decline in union bargaining power, an increase in unemployment benefits, and an increase in the overall work force reduce the efficient degree of tax progression.     

Globalization and labor market outcomes: Wage bargaining, search frictions, and firm heterogeneity

We introduce search unemployment into Melitz's trade model. Firms' monopoly power on product markets leads to strategic wage bargaining. Solving for the symmetric equilibrium we show that the selection effect of trade influences labor market outcomes. Trade liberalization lowers unemployment and raises real wages as long as it improves average productivity. We show that this condition is likely to be met by a reduction in variable trade costs or by entry of new trading countries. Calibrating the model shows that the long-run impact of trade openness on the rate of unemployment is negative and quantitatively significant.     

Unemployment and Growth in the Long Run: an Efficiency‐Wage Model With Optimal Savings*

An efficiency‐wage model of steady‐state equilibrium with labor‐augmenting technical progress is developed to explore the long‐run relationship between unemployment and growth. The rate of productivity growth is either specified exogenously or determined endogenously. In both cases, we preserve key results of the Shapiro–Stiglitz efficiency‐wage analysis without growth. Our model, however, also yields some striking new results. For instance, an exogenous increase in the growth rate may raise the rate of efficiency‐wage unemployment, and a once‐for‐all rise in the labor force may reduce the unemployment rate in the endogenous‐growth case.     

A Keynesian Dynamic Stochastic Disequilibrium model for business cycle analysis

A Dynamic Stochastic Disequilibrium model is proposed for business cycle analysis. The core innovation and fundamental deviation from the corresponding full-employment Dynamic Stochastic General Equilibrium model is the assumption that the nominal wage is a policy variable with no tendency to clear the labor market. As a consequence, disequilibrium unemployment arises which crucially alters the transmission of macroeconomic shocks. Solving the puzzle of low fiscal multipliers in conventional general equilibrium models, the effects of spending shocks become considerably more pronounced in the disequilibrium model because idle labor can be quickly utilized to accommodate aggregate demand without requiring households to increase their supply. In contrast to the standard model, technology and labor supply shocks are partly absorbed by unemployment and, hence, only moderately expansionary. Despite its simplicity and unlike the corresponding general equilibrium model, the disequilibrium model is able to generate shock responses which are broadly in line with empirical evidence.     

Policy matters. The long run effects of aggregate demand and mark-up shocks on the Italian unemployment rate

This paper estimates a VAR including labor productivity, real wage and unemployment rate, to identify the dynamic effects of technology, demand, and mark-up shocks, respectively, on the Italian labor market. Identification is achieved by imposing recursive restrictions on the matrix of long run multipliers. Our results show that both mark up and aggregate demand shocks permanently reduce the unemployment rate. Finally, technology shocks do not significantly affect the unemployment rate in the long run. These findings convey important policy implications: expansionary aggregate demand and deregulation policies reducing the mark up permanently decrease the Italian unemployment rate.Jel classification: C32, E32, J29This paper has been produced as part of a CEPR Research Network on New Approaches to the Study of Economic Fluctuations. We would like to thank Marcello DAmato, Mario Forni, Marco Lippi and Antonio Ribba for useful comments. We are also grateful to Bernd Sussmuth for pointing out to us several significant improvements to the paper.First version received: November 2001/Final version received: October 2002     

Cointegration and common trends on the West German labour market

In this paper we analyze the West German labour market by means of a cointegrated structural VAR model. We find sensible stable long-run relationships that are interpreted as a labour demand, a wage setting and a goods market equilibrium. In order to study the dynamic behaviour of the model we identify two common trends that push unemployment. We find that goods market shocks have only transitory impacts on unemployment. In the long run, it is almost equally determined by technology and labour supply factors. However, transitory shocks have major importance in the shorter run since adjustment processes are rather sluggish. First version received: Sept. 1998/Final version accepted: Feb. 2000     

Wage bargaining,trade and growth

We construct a North-South product-cycle model of trade with fully-endogenous growth and union wage bargaining. Economic growth is driven by Northern entrepreneurs who conduct R&D to innovate higher quality products. Northern production technologies can leak to the South upon successful imitation. The North has two sectors: a tradable industrial goods sector (manufacturing) where wages are determined via a bargaining process and a non-tradable sector (services) where wages are flexible. The South has only a tradable industrial goods sector where wages are flexible.We find that unilateral Northern trade liberalization, in the form of lower Northern tariffs on industrial goods, increases the rate of innovation but decreases both the bargained wage in the industrial sector and the flexible wage in the service sector. The wage effects are relative to the Southern wage rate. We also consider a variant of the model with Northern unemployment, driven by a binding minimum wage in the non-tradable service sector. In this case, Northern tariff cuts decrease the innovation rate and the bargained wage rate. In addition, the Northern unemployment rate increases. The model thus highlights the role of labor market institutions in determining the growth and labor market effects of tariff reductions. We also study the effects of unilateral Southern trade liberalization.     

The cause of Danish unemployment: Demand or supply shocks?

We study the Danish unemployment experience 1905–92 using a common trends model with cointegration constraints. To justify the identifying assumptions about the cointegration vectors and the common trends we present a simple macroeconomic model of the labor market. The model determines the long run behavior of labor productivity, employment, unemployment, real product and real consumer wages. The empirical results give support for three cointegration relations and two common trends. Based on the economic model the trends are interpreted as representing labor productivity (technology) and labor supply. With unemployment being nonstationary, the common trends analysis indicates that labor supply shocks is the primary source for explaining the behavior of unemployment. First Version Received: August 1999/Final Version Received: June 2000     

Flexible and Committed Profit Sharing with Wage Bargaining: Implications for Equilibrium Unemployment

We analyze the relationship between profit sharing, employee effort, wage formation and unemployment under different relative timings of the wage and profit sharing decisions. The optimal profit share under commitment exceeds that under flexibility, because through a profit share commitment the firm can induce wage moderation. The negotiated profit sharing depends positively on the bargaining power of trade union and it has both effort-enhancing and wage-moderating effects. Higher profit sharing is shown to reduce equilibrium unemployment under ``sufficiently rigid' labor market institutions, but it can harm employment when labor market ``rigidities' are ``small enough'.     

The role of labor markets for euro area monetary policy

In this paper, we explore the role of labor markets for monetary policy in the euro area in a New Keynesian model in which labor markets are characterized by search and matching frictions. We first investigate to which extent a more flexible labor market would alter the business cycle behavior and the transmission of monetary policy. We find that while a lower degree of wage rigidity makes monetary policy more effective, i.e. a monetary policy shock transmits faster onto inflation, the importance of other labor market rigidities for the transmission of shocks is rather limited. Second, having estimated the model by Bayesian techniques we analyze to which extent labor market shocks, such as disturbances in the vacancy posting process, shocks to the separation rate and variations in bargaining power are important determinants of business cycle fluctuations. Our results point primarily towards disturbances in the bargaining process as a significant contributor to inflation and output fluctuations. In sum, the paper supports current central bank practice which appears to put considerable effort into monitoring euro area wage dynamics and which appears to treat some of the other labor market information as less important for monetary policy.     

Unemployment,Wage Inequality and International Factor Movement in the Presence of Agricultural Dualism

This paper investigates how the international factor movements affect the unemployment and skilled–unskilled wage inequality with the existence of a modern agricultural sector. Our research has the new feature that we not only consider that the rural labor migrates to the urban sector but also to the modern agricultural sector. The main conclusions are that the unskilled labor outflow certainly decreases the wage inequality and unemployment rate and the influences that skilled labor movement and capital inflow have on wage inequality and unemployment rate are dependent on the factor intensity between the urban and modern agricultural sectors.     

A pre-estimation sample separation method for a labor market in disepuilibrium

The paper presents a method for separating the sample on wage rate and labor input for a labor market in disequilibrium prior to the estimation stage. It is shown how the method's economic rationale stems from the existence of Keynesian unemployment, which implies a combination of real wage and labor input off the notional labor demand and supply curves. The potential usefulness of the method for generating unbiased estimates of wage elasticities of labor demand and labor supply is demonstrated on annual U.S. data.     

Unemployment, Real Wages and the Money Supply in Australia*

Many observers have attributed the high unemployment experienced in Australia in the 1970s to the rises in real wages which have occurred in the decade. An alternative or additional hypothesis is that unemployment has resulted from policy directed at controlling inflation and that this has been exacerbated by the occurrence of adverse external factors, particularly bul not solely the oil price shocks, which have made inflation more difficult than otherwise to control .
The results of econometric tests suggest that a significant portion of fluctuations in the unemployment rate can be explained by real wage movements, and as well monetary policy through its effects on the real money supply also seems to affect unemployment. Both real wage rises and monetary restrictions appear to have contributed to the jump in unemployment in 1974–75, and since then the continuing high and rising unemployment rate is closely associated with the low growth rate of the real money supply .     

A Search Model of Unemployment and Inflation*

This paper introduces money into the standard labor‐matching model. A double‐coincidence problem makes money necessary as a medium of exchange. In the long run, a rise in the growth rate of money leads to higher inflation and higher unemployment, such that the long‐run Phillips curve is not vertical. The optimal monetary growth rate decreases with greater worker bargaining power, the level of unemployment benefits, and the payroll tax rate.     

Wage bargaining and shock sensitivity of a small open economy

This paper analyzes the effects of centralized bargaining over a nominal wage (indexation) rule on a small open economy with fixed exchange rates. It is shown that the relative bargaining power of the confederation of employers and the union, respectively, affects not only the level of the endogenous variables but also their reaction to exogenous disturbances. If the union's power exceeds a critical value, positive aggregate demand shocks increase unemployment since the actual nominal wage rises more than the market clearing one. Moreover, if the union's power is sufficiently close to its upper bound, the overreaction of wages becomes so large that positive aggregate demand shocks even lead to a decrease in output and employment, i.e., the multipliers become negative.