This paper presents a theory explaining the labor market matching process through microeconomic incentives. There are heterogeneous variations in the characteristics of workers and jobs, and firms face adjustment costs in responding to these variations. Matches and separations are described...

This paper examines the empirical evidence regarding the poor performance of the youth labour market in Spain over the last two decades, which entails very high unemployment for both higher and lower educated workers, symptoms of over-education, and low intensity of on-the-job training. It also...

This paper provides a microeconomic model of matching which implies that the standard, reduced form approach, is misspecified. A simple model is analysed (with help-wanted/employment-needed advertising) where the matching rate depends not only on the stocks of unemployed and vacancies in the...

This paper develops a matching model of the labour market under wage rigidity when hiring decisions are irreversible. There are two types of workers, the skilled and the unskilled. The model is used to analyse whether technological advances may have increased unemployment, and shows that this is...

This paper surveys recent work in equilibrium models of labor markets characterized by search and recruitment frictions and by the need to reallocate workers across productive activities. The duration of unemployment and jobs and wage determination are treated as endogenous outcomes of job...

This paper offers an alternative theory for the increase in unemployment and wage inequality experienced in the United States over the past two decades. In my model firms decide the composition of jobs and then match with skilled and unskilled workers. The demand for skills is endogenous and an...

The matching function describes the flow of job creation as a function of the stocks of unemployed and vacancies. Most empirical work tries to identify such a relationship by regressing the flow of matches (aggregated over the month) on the stocks of unemployment and vacancies measured at the...

This paper analyses how the levels of unemployment and vacancies affect the rate at which unemployed workers find employment -- the worker-firm `matching function'. In particular we test the robustness of previous empirical work by checking whether we obtain the same estimated function using...

This paper models equilibrium trading patterns when marketplaces exist and goods are differentiated. When first visiting the market, a buyer samples a stock of goods. If fortunate, the buyer matches with and purchases one of these goods and then exits the market. If an initial match does not...

This study analyzes the treatment effects of public training programs for the unemployed in Germany. Based on propensity score matching methods we extend the picture that has been sketched in previous studies by estimating treatment effects of medium-term programs for different sub-groups with...