Inflation and Unemployment in General Equilibrium*

When labor is indivisible, there exist efficient outcomes with some agents randomly unemployed, as in Rogerson (1988) . We integrate this idea into the modern theory of monetary exchange, where some trade occurs in centralized markets and some in decentralized markets, as in Lagos and Wright (2005) . This delivers a general equilibrium model of unemployment and money, with explicit microeconomic foundations. We show that the implied relation between inflation and unemployment can be positive or negative, depending on simple preference conditions. Our Phillips curve provides a long‐run, exploitable, trade‐off for monetary policy; it turns out, however, that the optimal policy is the Friedman rule.     

Worker Absenteeism in Search Equilibrium*

In this paper we introduce a general equilibrium model of search unemployment that incorporates absence from work as a distinct labor force state. Absenteeism is driven by random shocks to the value of leisure that are private information to the workers. Firms maximize profits while recognizing that the compensation package may affect the queue of job applicants and the absence rate. The analysis provides results concerning the effects of social insurance benefits and other determinants of workers' and firms' behavior. The normative analysis identifies externalities associated with firm‐provided sick pay and examines the welfare implications of alternative policies.     

Skill Loss, Ranking of Job Applicants and the Dynamics of Unemployment

Abstract. This paper investigates the consequences of skill loss as a result of unemployment in an efficiency wage model with turnover costs and on-the-job search. Firms are unable to differentiate wages and therefore prefer to hire employed searchers or unemployed workers who have not lost human capital. It is shown that if some fundamental factor in the economy changes, this will result in a lengthy adjustment process with substantial long-run unemployment effects. Moreover, the model is capable of generating persistence, but the amount depends on the duration of the shock itself.     

Unemployment insurance design: Inducing moving and retraining

Evidence suggests that unemployed individuals can affect their job prospects by undertaking a costly action like deciding to move or retrain. Realistically, such an opportunity only arises for some individuals and the identity of those may be unobservable ex ante. The problem of characterizing constrained optimal unemployment insurance in this case has been neglected in previous literature. We construct a model of optimal unemployment insurance where multiple incentive constraints are easily handled. The model is used to analyze the case when an incentive constraint involving moving costs must be respected in addition to the standard constraint involving costly unobservable job-search. Absent wealth effects on behavior, we derive closed-form solutions showing that when the moving/retraining incentive constraint binds, unemployment benefits should increase over the unemployment spell, with an initial period with low benefits and an increase after this period has expired.     

Unemployment Durations in West Germany Before and After the Reform of the Unemployment Compensation System during the 1980s

Abstract. This paper analyzes empirically the distribution of unemployment durations in West Germany during the 1980s and 1990s. It therefore covers periods before and after the changes during the mid‐1980s in the maximum entitlement periods for unemployment benefits for older unemployed. The analysis is based on the IAB employment subsample containing administrative data for about 500,000 individuals. Since these data only partly reveal the unemployment duration in an economic sense, we use a narrow and a wide proxy for unemployment. Our empirical analysis finds significant changes in the distribution of non‐employment durations for older unemployed. At the same time, the distribution of unemployment durations between jobs remained unchanged after the reforms. Our findings clearly show that many firms and workers used the more beneficial laws as a part of early retirement packages. Surprisingly, for those workers who found and accepted a new job, we do not observe a prolongation of their search periods to a sizeable extent.     

Unemployment dynamics with international capital mobility

We study the response of domestic unemployment rates to shocks in total factor productivity for economies with high capital mobility and low labour mobility. We show that high capital mobility amplifies the impact on the domestic unemployment rate of domestic fluctuations in total factor productivity, shortens the lag of the response to shocks and raises the variability of unemployment. But average unemployment is unaffected. Capital flows increase the riskiness of labour income and reduce the riskiness of capital income but do not reduce mean welfare.     

Labor‐market Volatility in Matching Models with Endogenous Separations*

The business‐cycle behavior of a matching model with endogenous separations is studied in this paper. We show that whether aggregate productivity shocks have a larger effect on the vacancy–unemployment ratio than in a model with exogenous separations depends on whether worker productivity stochastically increases with tenure. The difference in the response is quantitatively small, however. We also show that the cleansing effect introduced by allowing for endogenous separations can help in reconciling the model with observed fluctuations in the unemployment rate, but not with those in the vacancy rate.     

Search Theory: The 2010 Nobel Memorial Prize in Economic Sciences

This paper surveys search theory with an emphasis on the contributions of the 2010 laureates for the Nobel Memorial Prize in Economic Sciences, Peter Diamond, Dale Mortensen, and Christopher Pissarides.     

A note on the life-cycle search and matching model with segmented labor markets

Recently, there has been renewed interest in labor search and matching models that incorporate a life-cycle structure by assuming finite horizons. Existing studies provide detailed analyses on the age dynamics of job creation and destruction, assuming that workers of all ages search for jobs in the same market. This paper examines a related environment that has drawn less attention, where the labor market is exogenously segmented by age. The paper finds sufficient conditions for the model to yield unambiguous predictions on the age profiles of key variables, and compares them with the corresponding conditions in models with a single market. The paper further examines the age profiles of these key variables in the efficient allocation. In particular, with no persistence in idiosyncratic match productivity, the efficient allocation is found to exhibit monotonic age profiles for the job finding and separation rates.     

JOB FLOWS AND UNEMPLOYMENT IN AN EQUILIBRIUM UNEMPLOYMENT MODEL WITH FIRM‐SPECIFIC SKILL TRAINING*

We introduce productivity enhancing firm‐specific skill training into the labour search model in which the firm‐specific skill training intensity and the job destruction rate are endogenously determined. It is shown that the higher the intensity of such training, the lower the rates of unemployment, job creation and job destruction. The paper's model provides a theoretical framework to understand the often mentioned peculiarity of the Japanese labour market; prevalently low rates of unemployment, job creation and job destruction in Japan are due to its training system which promotes workers to acquire firm‐specific skills.     

Survey Evidence on Wage Rigidity and Unemployment: Sweden in the 1990s*

We document the results of a repeat survey, which updates Agell and Lundborg (1995) , on wage rigidity in a sample of 159 Swedish manufacturing firms, conducted during the severe Swedish recession of the 1990s. It is found that not even a prolonged period of very high unemployment and quite low inflation softened workers’ resistance to wage cuts. We discuss possible reasons for this. In addition, we report new evidence on underbidding, efficiency‐wage mechanisms, and unemployment persistence.     

Ireland and Switzerland: The jagged edges of the Great Inflation

Ireland and Switzerland both had rising inflation during the early 1970s, but their experiences diverged thereafter, so that they form a rare example of two countries whose inflation rates are poorly correlated with one another over the Great Inflation period. This paper proposes that the monetary policy neglect hypothesis can account for both countries’ experiences. Extensive archival evidence is considered for each country regarding the doctrines that guided 1970s policymaking. This evidence establishes that Switzerland's better record is accounted for by the competition between monetary and nonmonetary views of inflation being resolved earlier and more decisively in favor of the monetary view. In Ireland, by contrast, nonmonetary views of inflation dominated policymaking throughout the 1970s.     

Search equilibrium and social and private returns to education

Social and private returns to education are computed using the structural estimates of an extended Burdett-Mortensen search equilibrium model. The extension includes different skill groups linked via a production function with variable degree of homogeneity, allowing thereby for a unimodal earnings density with a decreasing right tail. We find that the decreasing unemployment risk for higher skill groups and the absence of tuition fees in Germany increase private returns and lead to a too large share of high skilled individuals in the workforce, which is suboptimal from the social point of view.     

Low‐inflation Targeting and Long‐run Unemployment*

The model of Akerlof, Dickens and Perry (2000) (ADP) predicts that low inflation may cause unemployment to persist at high levels. When applied to U.S. data, their results strongly rejected the conventional NAIRU model. We apply the ADP model to Swedish data. The fact that our Swedish data also reject the NAIRU model has a number of interesting implications for the Swedish economy and, potentially, for other European countries as well. The results indicate that raising the Swedish inflation target from 2 to 4 percent would bring long‐run unemployment down by several percentage points. The possibility of ADP‐type long‐run Phillips curves also across the euro countries may raise some concern about the EMU project. While detailed studies on other countries are needed, there is nothing to suggest that these non‐vertical Phillips curves would not differ considerably across the euro countries. Any single inflation level targeted by the ECB would then generate excess unemployment in individual member states.     

Migration,Unemployment, and Skill Downgrading

In this paper, we analyze the labor market impacts of immigration under flexible and rigid labor market regimes. A general equilibrium framework is developed, accounting for skill heterogeneity and labor market frictions, where unemployed medium‐skilled manufacturing workers are downgraded into low‐skilled service jobs, while low‐skilled service workers might end up unemployed. The analytical analysis shows that medium‐skill immigration decreases low‐skilled unemployment under the flexible regime, indicating a complementarity effect, while the rigid regime induces a substitution effect, leading to low‐skilled unemployment. Moreover, it leads to wage polarization. In a numerical analysis, the economic effects of different migration scenarios are quantified.     

Unemployment and econometric learning

We apply well-known results of the econometric learning literature to the Mortensen and Pissarides real business cycle model. Agents can always learn the unique rational expectations equilibrium (REE), for all possible well-defined sets of parameter values, by using the minimum-state-variable solution to the model and decreasing gain learning. From this perspective the assumption of rational expectations in the model could be seen as reasonable. But using a parametrisation with UK data, simulations show that the speed of convergence to the REE is slow. This type of learning dampens the cyclical response of unemployment to small structural shocks.     

A three state model of worker flows in general equilibrium

We develop a simple model featuring search frictions and a nondegenerate labor supply decision along the extensive margin. The model is a standard version of the neoclassical growth model with indivisible labor and idiosyncratic productivity shocks and frictions characterized by employment loss and employment opportunity arrival shocks. We argue that it is able to account for the key features of observed labor market flows for reasonable parameter values. Persistent idiosyncratic productivity shocks play a key role in allowing the model to match the persistence of the employment and out of the labor force states found in individual labor market histories.     

A Union-bashing Model of Inflation Targeting

This paper shows that in an open two‐sector economy, centralization of wage setting may be important in determining the employment (and welfare) effects of different monetary targets. By disciplining unions in the sectors open to international trade, exchange rate targeting yields higher employment than inflation targeting when wage‐setting is more centralized in the open sector than in the shielded sector. When wage‐setting centralization is higher in the shielded sector, we show that general price‐level inflation targeting, while better than exchange rate targeting, is inferior to an inflation target that focuses more heavily on shielded sector prices.     

Unemployment and indeterminacy

Using an efficiency-wage model, we examine the relationship between indeterminacy and unemployment insurance. It is shown that the less unemployment insurance is, the more likely equilibrium is to be indeterminate. Equilibrium can be indeterminate even without externalities or increasing returns, which makes a sharp contrast to the recent literature on indeterminacy. Our result is based on the fact that the no-shirking condition with marginal utility of wealth kept constant is downward sloping when income insurance is not perfect.     

Optimal Workfare with Voluntary and Involuntary Unemployment*

This paper addresses the welfare implications of introducing workfare into unemployment benefit policy. We consider a population composed of employed and unemployed workers and of individuals who do not seek employment. Job search behavior is unobservable, which means that voluntarily unemployed individuals can claim unemployment insurance (UI) benefits intended for unemployed workers. As a consequence, pecuniary benefit schemes underinsure workers against unemployment. We show that requiring unproductive activities (workfare) in exchange for UI benefits may generate a Pareto improvement by facilitating better unemployment insurance for workers, and we characterize the situations where this is the case.