One of the most important long-run trends in the U.S. labor market is polarization, defined as the relative growth of employment in high-skill jobs (such as management and technical positions) and low-skill jobs (such as food-service and janitorial work) amid the concurrent decline in...

In a reasonably calibrated Mortensen and Pissarides matching model, shocks to average labor productivity can account for a small portion of the fluctuations in unemployment and vacancies (Shimer (2005)). I add heterogeneity in jobs (matches) with respect to the time the job is created in the...

In this paper I explore optimal employment contract design in a random search framework, where workers search on and off the job for employment opportunities similar to that of Lentz (2010) and Bagger and Lentz (2013). The worker determines the frequency by which employment opportunities arrive...

The economic crisis of 2008-2009, the most important that France knew since the Second world war, had a significant impact on the employment situation but, in relation with the fall of the production, the observed destructions of jobs were less large this time than during the recession of...

Des exemples d’inégalité en éducation et de surqualification sur le marché du travail peuvent souvent se produire dans le même bâtiment administratif, comme par exemple un employé de bureau ayant un diplôme d’études supérieures et qui doit rendre compte à un supérieur n’ayant...

This paper shows that changes in the skill requirements of jobs are one way by which economic downturns affect job match quality. In doing so this paper makes two contributions to the literature. The first contribution is to document a stylized fact about the cyclicality of skill requirements...

Examples of educational mismatch and overqualifcation in the labour market can often be found in the same office building – the clerical worker with a bachelor’s degree reporting to a manager with a high school education – as an example. Some have argued that mismatch in...

We develop a framework where mismatch between vacancies and job seekers across sectors translates into higher unemployment by lowering the aggregate job-finding rate. We use this framework to measure the contribution of mismatch to the recent rise in U.S. unemployment by exploiting two sources...

Within a search and matching model with risk-averse workers, endogenous hiring and separation, and unobservable search effort, we show how to decentralize the constrained-efficient allocation by a combination of a production tax and three labor-market policy instruments: vacancy subsidies,...

Job losses during the Great Recession were concentrated among middle-skill workers, the same group that over the long run has suffered the most from automation and international trade. How might long-run occupational polarization be related to cyclical changes in middle-skill employment? We find...