On Labor Policies Affecting Investment in General Human Capital

Abstract. This paper develops a search model including workers’ investments in general human capital and investigates the effects of labor policies such as subsidies to human capital investment and unemployment benefits on the accumulation of human capital. It is shown that the equilibrium is not optimal because workers underinvest in human capital or firms open too many vacancies in comparison with the number of unemployed workers. Comparative statics show that an increase in subsidies to human capital investment adds to the number of vacancies per unemployed worker and to workers’ investments in human capital and that an increase in unemployment benefits decreases them. Finally, labor policies that remove the distortion are explored.     

EQUILIBRIUM SEARCH UNEMPLOYMENT,ENDOGENOUS PARTICIPATION,AND LABOR MARKET FLOWS

The sustainability of welfare states requires high employment and high participation to raise the tax base. To analyze labor supply in a world with market frictions, we propose and solve a macro model of the labor market with unemployment and labor force participation as endogenous and distinct states. In our world, workers' decisions of participating are determined by an entry decision and an exit decision. A calibration of the model improves the usual representations of labor markets, since it quantitatively accounts for the observed flows between employment and nonparticipation. The paper investigates also the effect of payroll taxes and unemployment benefits on participation decisions. Taxes reduce entries and increase exits, whereas unemployment benefits, at a given job‐finding rate, raise entries and have ambiguous effects on exits. (JEL: J2, J6)     

Unemployment and Business Cycles

We develop and estimate a general equilibrium search and matching model that accounts for key business cycle properties of macroeconomic aggregates, including labor market variables. In sharp contrast to leading New Keynesian models, we do not impose wage inertia. Instead we derive wage inertia from our specification of how firms and workers negotiate wages. Our model outperforms a variant of the standard New Keynesian Calvo sticky wage model. According to our estimated model, there is a critical interaction between the degree of price stickiness, monetary policy, and the duration of an increase in unemployment benefits.     

Minimum Wage Effects on Labor Market Outcomes under Search,Matching, and Endogenous Contact Rates

Building upon a continuous‐time model of search with Nash bargaining in a stationary environment, we analyze the effect of changes in minimum wages on labor market outcomes and welfare. Although minimum wage increases may or may not lead to increases in unemployment in our model, they can be welfare‐improving to labor market participants on both the supply and demand sides of the labor market. We discuss identification of the model using Current Population Survey data on accepted wages and unemployment durations, and show that by incorporating a limited amount of information from the demand side of the market it is possible to obtain credible and precise estimates of all primitive parameters. We show that the optimal minimum wage in 1996 depends critically on whether or not contact rates can be considered to be exogenous and we note that the limited variation in minimum wages makes testing this assumption problematic.     

Crime,Search, and Ex‐offenders’ Accessibility to Labor Markets

Rehabilitation for ex‐offenders has positive (e.g. more production) and negative (e.g. more crime) effects on society. We investigate the effect of rehabilitation on criminal behavior and the labor market using a search model. In the case where ex‐offenders cannot join the labor market, promoting rehabilitation for them may reduce crime. In such a case, the equilibrium allocation may be inefficient. Moreover, under the Hosios condition, equilibrium labor market tightness is lower than the efficient outcome because of crime, as the crime option raises the value of unemployed workers. Because this option works as a negative externality on matched firms, equilibrium tightness is lower than the optimal level.     

An Equilibrium Theory of Learning,Search, and Wages

We examine the labor market effects of incomplete information about the workers' own job‐finding process. Search outcomes convey valuable information, and learning from search generates endogenous heterogeneity in workers' beliefs about their job‐finding probability. We characterize this process and analyze its interactions with job creation and wage determination. Our theory sheds new light on how unemployment can affect workers' labor market outcomes and wage determination, providing a rational explanation for discouragement as the consequence of negative search outcomes. In particular, longer unemployment durations are likely to be followed by lower reemployment wages because a worker's beliefs about his job‐finding process deteriorate with unemployment duration. Moreover, our analysis provides a set of useful results on dynamic programming with optimal learning.     

EQUILIBRIUM INCENTIVE CONTRACTS AND EFFICIENCY WAGES

We analyze the optimal (efficiency) wage contract when output is contractible but firms neither observe the workers' effort nor their match‐specific productivity. Firms offer wage contracts that optimally trade off effort and wage costs. As a result, employed workers enjoy rents, which in turn creates unemployment. Nonetheless, the incentive power of the equilibrium wage contract is constrained efficient in the absence of taxes and unemployment benefits. We also show that more high‐powered incentive contracts tend to be associated with higher equilibrium unemployment rates. (JEL: E24, J30, J41)     

THE POLITICAL ECONOMY OF FLEXICURITY

We document the presence of a trade‐off in the labor market between the protection of jobs and the support offered to unemployed people. Different countries’ locations along this trade‐off represent stable political‐economic equilibria. We develop a model in which individuals determine the mix of job protection and support for the unemployed in a political environment. Agents are heterogeneous along two dimensions: employment status (insiders and outsiders) and skills (low and high). Unlike previous work on the political economy of labor market institutions, we emphasize the role of job protection and unemployment benefits in the wage‐setting process. A key implication of the model is that flexicurity configurations with low levels of job protection and high levels of support to the unemployed should emerge in the presence of a highly educated workforce. Panel regressions of countries’ locations along this institutional trade‐off are consistent with the implications of our model.     

考虑策略性消费者的生鲜农产品定价和库存决策

消费者的策略性行为使零售商的生鲜农产品的定价和库存决策面临更大挑战。本文基于报童模型，综合考虑消费者的策略性行为，对生鲜农产品价值下降进行离散化处理。刻画策略性消费者的决策行为，构建零售商的单阶段和两阶段定价及库存决策模型，分析了产品价值剩余率对消费者行为、零售商最优定价、最优库存水平以及零售商利润的影响机理。研究发现，在单阶段模型中零售商最优价格和最优库存水平均随产品价值剩余率的递增而递增；而在两阶段模型中，第二阶段最优价格随价值剩余率的变化趋势可能存在阈值。     

PAYROLL TAXES,SOCIAL INSURANCE,AND BUSINESS CYCLES

Payroll taxes represent a major distortionary influence of governments on labor markets. This paper examines the role of time‐varying payroll taxes and the social safety net for cyclical fluctuations in a nonmonetary economy with labor market frictions and unemployment insurance, when the latter is only imperfectly related to search effort. A balanced social insurance budget induces countercyclical payroll taxation, renders gross wages more rigid over the cycle and strengthens the model's endogenous propagation mechanism. For conventional calibrations, the model generates a negatively sloped Beveridge curve and countercyclical unemployment as well as substantial volatility and persistence of vacancies and unemployment.     

THE REPLACEMENT PROBLEM IN FRICTIONAL ECONOMIES: A NEAR‐EQUIVALENCE RESULT

We examine how technological change affects wage inequality and unemployment in a calibrated model of matching frictions in the labor market. We distinguish between two polar cases studied in the literature: a “creative destruction” economy, where new machines enter chiefly through new matches and an “upgrading” economy, where machines in existing matches are replaced by new machines. Our main results are: (i) these two economies produce very similar quantitative outcomes, and (ii) the total amount of wage inequality generated by frictions is very small. We explain these findings in light of the fact that, in the model calibrated to the US economy, both unemployment and vacancy durations are very short, i.e., the matching frictions are quantitatively minor. Hence, the equilibrium allocations of the model are remarkably close to those of a frictionless version of our economy where firms are indifferent between upgrading and creative destruction, and where every worker is paid the same market‐clearing wage. These results are robust to the inclusion of machine‐specific or match‐specific heterogeneity into the benchmark model. (JEL: J41, J64, O33)     

The Pace of Job Creation and Destruction,Cyclical Shocks and Employment Dynamics

This paper investigates (un)employment dynamics in response to labour demand shocks using a small empirical flow model for the labour market in The Netherlands. The model explicitly takes account of the propagation of shocks through the various duration classes of unemployment and allows for duration dependence in the state of unemployment. A sensitivity analysis shows that 1. congestion in the matching process due to the increase in the pace of job creation and destruction may have substantial effects on (un)employment dynamics; 2. the effects depend very much on the initial pace of labour market dynamics and they are larger when the initial pace is low; 3. the labour market may be out of its equilibrium for quite a long time after a shock occurs; 4. fluctuations in the pace of job creation and destruction only lead to unemployment persistence in the model when the escape probability from long term unemployment is zero; otherwise, the economy returns to its original equilibrium, albeit with long adjustment lags in the case that the initial pace of structural change and/or the escape probability for long term unemployed is low.     

COMPETITION AND RELATIONAL CONTRACTS: THE ROLE OF UNEMPLOYMENT AS A DISCIPLINARY DEVICE

Abstract When workers are faced with the threat of unemployment, their relationship with a particular firm becomes valuable. As a result, a worker may comply with the terms of a relational contract that demands high effort even when performance is not enforceable by a third party. But can relational contracts motivate high effort when workers can easily find alternative jobs? We examine how competition for labor affects the emergence of relational contracts and their effectiveness in overcoming moral hazard in the labor market. We show that effective relational contracts do emerge in a market with excess demand for labor. Long‐term relationships turn out to be less frequent when there is excess demand for labor than they are in a market characterized by exogenous unemployment. However, stronger competition for labor does not impair labor market efficiency: higher wages induced by competition lead to higher effort out of concerns for reciprocity.     

FAMILY VALUES AND THE REGULATION OF LABOR

To be efficient, flexible labor markets require geographically mobile workers. Otherwise firms can take advantage of workers' immobility and extract rents at their expense. In cultures with strong family ties, moving away from home is costly. Thus, to limit the rents of firms and to avoid moving, individuals with strong family ties rationally choose regulated labor markets, even though regulation generates higher unemployment and lower incomes. Empirically, we find that individuals who inherit stronger family ties are less mobile, have lower wages and higher unemployment, and support more stringent labor market regulations. We find a positive association between labor market rigidities at the beginning of the 21st century and family values prevailing before World War II, and between family structures in the Middle Ages and current desire for labor market regulation. Both results suggest that labor market regulations have deep cultural roots.     

Inequality and Unemployment in a Global Economy

This paper develops a new framework for examining the determinants of wage distributions that emphasizes within‐industry reallocation, labor market frictions, and differences in workforce composition across firms. More productive firms pay higher wages and exporting increases the wage paid by a firm with a given productivity. The opening of trade enhances wage inequality and can either raise or reduce unemployment. While wage inequality is higher in a trade equilibrium than in autarky, gradual trade liberalization first increases and later decreases inequality.     

Two Questions about European Unemployment

A general equilibrium search model makes layoff costs affect the aggregate unemployment rate in ways that depend on equilibrium proportions of frictional and structural unemployment that in turn depend on the generosity of government unemployment benefits and skill losses among newly displaced workers. The model explains how, before the 1970s, lower flows into unemployment gave Europe lower unemployment rates than the United States and also how, after 1980, higher durations have kept unemployment rates in Europe persistently higher than in the United States. These outcomes arise from the way Europe's higher firing costs and more generous unemployment compensation make its unemployment rate respond to bigger skill losses among newly displaced workers. Those bigger skill losses also explain why U.S. workers have experienced more earnings volatility since 1980 and why, especially among older workers, hazard rates of gaining employment in Europe now fall sharply with increases in the duration of unemployment.     

On the Time Sequence of Unemployment Benefits When Search is Costly

Should we cut the level of unemployment benefits, or reduce their potential duration? The answer depends on the way the unemployed search behaviour and unemployment insurance schemes interact. In this paper, we consider that unemployment insurance funds can be used to improve search. Resulting hazards are increasing over the unemployment spell prior to the exhaustion of benefits, and plummet immediately after it. Turning to policy implications, we assume the public decision–maker aims to minimize the average duration of unemployment under a resource constraint. First, we show the stationary relationship between average unemployment duration and unemployment benefit is hump–shaped. Second, raising benefits over a short duration can reduce average duration. Finally, we demonstrate that most of the time, a declining (yet always positive) benefit scheme is optimal.     

The Effect of Unemployment Insurance Generosity on Unemployment Duration and Labor Market Transitions

This paper examines the impact of unemployment insurance (UI) benefit generosity on labor market transitions in Turkey from 2002 to 2012. Using a unique administrative dataset, I take advantage of a sharp discontinuity in treatment assignment at 900‐paid‐premium‐days to identify the impact of generosity on the outcome variables. I find that unemployment benefit duration is increased by approximately 0.07 weeks per additional week of UI. However, more generous benefits lead to lower probabilities of transition to employment and the impact is greater compared to developed countries. In addition, workers who are entitled to longer UI periods have lower probabilities of cheating the system and rejecting the services of the Turkish Employment Agency.     

Better Safe than Sorry? The Effects of Income Risk and Unemployment Risk on Wages

We study the effects of income risk and unemployment risk on individual wages simultaneously. Starting point for the empirical analysis is a portfolio model for the labor market. This model shows positive wage effects for both risks but also a negative interaction effect. Using German administrative panel data we estimate the effects of the income risk, the unemployment risk and their interaction on individual wages separately for men and women in East and West Germany. We find the expected positive wage effects for both risks as well as a negative interaction effect. The marginal effect of income risk on wages is positive, whereas the marginal effect of unemployment risk is negative.     

Job Matching and the Wage Distribution

This paper brings together the microeconomic‐labor and the macroeconomic‐equilibrium views of matching in labor markets. We nest a job matching model à la Jovanovic (1984) into a Mortensen and Pissarides (1994)‐type equilibrium search environment. The resulting framework preserves the implications of job matching theory for worker turnover and wage dynamics, and it also allows for aggregation and general equilibrium analysis. We obtain two new equilibrium implications of job matching and search frictions for wage inequality. First, learning about match quality and worker turnover map Gaussian output noise into an ergodic wage distribution of empirically accurate shape: unimodal, skewed, with a Paretian right tail. Second, high idiosyncratic productivity risk hinders learning and sorting, and reduces wage inequality. The equilibrium solutions for the wage distribution and for the aggregate worker flows—quits to unemployment and to other jobs, displacements, hires—provide the likelihood function of the model in closed form.