Labor-market Volatility in a Matching Model with Worker Heterogeneity and Endogenous Separations

Recessions are times when the quality of the unemployment pool is lower, because entry into unemployment is biased in favor of low-productivity workers. I develop a search and matching model with worker heterogeneity and endogenous separations that has this feature. I show that in a recession a compositional shift in unemployment towards low-productivity workers, due an increase in job separations, lowers the matching effectiveness of searching firms, thereby causing their average recruiting cost to rise. This acts to further depress vacancy creation in a recession. In contrast to most models that allow for endogenous separations, this model generates a realistic Beveridge curve correlation.search and matching, endogenous separations, worker heterogeneity, un-employment, vacancies volatility

“Give me your Tired, your Poor,” so I can Prosper: Immigration in Search Equilibrium

We analyze the impact of immigration on the host country within a search and matching model that allows for skill heterogeneity, endogenous skill acquisition, differential search cost between immigrants and natives, capital-skill complementarity and different degree of substitutability between unskilled natives and immigrants. Within such a framework, we find that although immigration raises the overall welfare, it may have distributional effects. Specifically, skilled workers gain in terms of both employment and wages. Unskilled workers, on the other hand, gain in terms of employment but may lose in terms of wages. Nevertheless, in one version of the model, where unskilled workers and immigrants are imperfect substitutes, we find that even the unskilled wage may rise. These results accommodate conflicting empirical findings.Search, Unemployment, Immigration, Skill-heterogeneity

"Give me your Tired, your Poor," so I can Prosper: Immigration in Search Equilibrium

We analyze the impact of immigration on the host country within a search and matching model that allows for skill heterogeneity, endogenous skill acquisition, differential search cost between immigrants and natives, capital-skill complementarity and different degree of substitutability between unskilled natives and immigrants. Within such a framework, we find that although immigration raises the overall welfare,it may have distributional effects. Specifically, skilled workers gain in terms of both employment and wages. Unskilled workers, on the other hand, gain in terms of employment but may lose in terms of wages. Nevertheless, in one version of the model, where unskilled workers and immigrants are imperfect substitutes, we find that even the unskilled wage may rise. These results accommodate conflicting empirical findings.Search; Unemployment; Immigration; Skill-heterogeneity

Cyclical Upgrading of Labor and Employment Differences across Skill Groups

This paper examines the cyclical properties of employment rates in a search and matching model that features heterogeneous workers and jobs. Firms can create vacancies for jobs that that require either a high- or a low-skill level. High-skill workers are best suited for high-skill jobs, but are also qualified for low-skill jobs, whereas low-skill workers are only qualified for low-skill jobs. My analysis highlights the importance of a vertical type of transitory skill-mismatch, which takes the form workers accepting jobs below their skill level to escape unemployment and upgrading by on-the-job search, in explaining why typically employment is lower and more procyclical at lower skill levels. I show that this feature makes low-skill vacancy creation more strongly procyclical than high-skill vacancy creation. The model is also consistent with important features of the labor market, such as a procyclical rate of job-to-job transitions and evidence that the educational levels of new hires within occupations are higher in recessions and lower in booms.

"Give me your Tired, your Poor," so I can Prosper: Immigration in Search Equilibrium

We analyze the impact of immigration on the host country within a search and matching model that allows for skill heterogeneity, endogenous skill acquisition, differential search cost between immigrants and natives, capital-skill complementarity and different degree of substitutability between unskilled natives and immigrants. Within such a framework, we find that although immigration raises the overall welfare,it may have distributional effects. Specifically, skilled workers gain in terms of both employment and wages. Unskilled workers, on the other hand, gain in terms of employment but may lose in terms of wages. Nevertheless, in one version of the model, where unskilled workers and immigrants are imperfect substitutes, we find that even the unskilled wage may rise. These results accommodate conflicting empirical findings

A Search-Equilibrium Approach to the Effects of Immigration on Labor Market Outcomes

We analyze the impact of the skill-biased immigration influx that took place during the years 2000-2009 in the United States, within a search and matching model that allows for skill heterogeneity, differential search cost between immigrants and natives, capital-skill complementarity and possibly endogenous skill acquisition. Within such a framework, we find that although the skill-biased immigration raised the overall net income to natives, it may have had distributional effects. Specifically, unskilled native workers gained in terms of both employment and wages. Skilled native workers, on the other hand, gained in terms of employment but may have lost in terms of wages. Nevertheless, in one extension of the model, where skilled workers and immigrants are imperfect substitutes, we find that even the skilled wage may have risen

"Give me your Tired, your Poor," so I can Prosper: Immigration in Search Equilibrium

We analyze the impact of immigration on the host country within a search and matching model that allows for skill heterogeneity, endogenous skill acquisition, differential search cost between immigrants and natives, capital-skill complementarity and different degree of substitutability between unskilled natives and immigrants. Within such a framework, we find that although immigration raises the overall welfare,it may have distributional effects. Specifically, skilled workers gain in terms of both employment and wages. Unskilled workers, on the other hand, gain in terms of employment but may lose in terms of wages. Nevertheless, in one version of the model, where unskilled workers and immigrants are imperfect substitutes, we find that even the unskilled wage may rise. These results accommodate conflicting empirical findings

A Search-Equilibrium Approach to the Effects of Immigration on Labor Market Outcomes

We analyze the impact of the skill-biased immigration influx that took place during the years 2000-2009 in the United States, within a search and matching model that allows for skill heterogeneity, differential search cost between immigrants and natives, capital-skill complementarity and possibly endogenous skill acquisition. Within such a framework, we find that although the skill-biased immigration raised the overall net income to natives, it may have had distributional effects. Specifically, unskilled native workers gained in terms of both employment and wages. Skilled native workers, on the other hand, gained in terms of employment but may have lost in terms of wages. Nevertheless, in one extension of the model, where skilled workers and immigrants are imperfect substitutes, we find that even the skilled wage may have risen

Cyclical Upgrading of Labor and Employment Differences across Skill Groups

This paper examines the cyclical properties of employment rates in a search and matching model that features heterogeneous workers and jobs. I capture heterogeneity by postulating two skill levels: high and low. All low-skill workers can produce in only low-skill jobs, whereas some high-skill workers can produce in both high-and low-skill jobs. My analysis highlights the importance of a vertical type of transitory skill mismatch, in which workers accept jobs below their skill level to escape unemployment and upgrade by on-the-job search, in explaining why employment is typically lower and more procyclical at lower skill levels. The model is also consistent with other important features of the labor market, such as a procyclical rate of job-to-job transitions and evidence on cyclical changes in the composition of job quality. In recessions outflows from unemployment shift the distribution of high-skill workers toward low-skill jobs, while expansions allow them to upgrade to high-skill jobs through job-to-job transitions.