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...

This article is an idiosyncratic survey of the insider-outsider theory, describing the vision underlying the theory, and evaluating salient contributions to the literature in the light of this vision. We also indicate what appear to have been dead-ends and red herrings in past research. The...

This paper expands on the methodology of Groshen and Potter (2003) for studying cyclical and structural changes in the US economy and analyzes the net structural and cyclical employment trends in the US economy during the last 10 trough-to-trough business cycles from 1949 to the present. It...

A matching model will explain both unemployment and economic growth by considering the underground sector. Three problems can thus be simultaneously accounted for: (i) the persistence of underground economy, (ii) the ambiguous relationships between underground employment and unemployment, and...

In this paper, we examine how skill loss can contribute to aggregate labor market fluctuations in the Diamond-Mortensen-Pissarides model. We develop a computationally tractable stochastic version of that model wherein workers accumulate skills on the job and face a risk of skill loss after job...

During the last few decades, labor markets in advanced economies have become "polarized" as relative labor demand grows for high- and low-skill workers while it declines for middle-skill workers. This paper explores how polarization has interacted with the U.S. business cycle since the late...

This paper develops a standard matching model to address the problem of the hidden sector, as it is characterised in Italy, i.e. framed in a rather advanced economic and institutional setting, but also linked to the socio-economic regional dualism. The main novel features of the model are that...

We analyse the efficiency of the labour market outcome in a competitive search equilibrium model with endogenous turnover and endogenous general human capital formation. We show that search frictions do not distort training decisions if firms and their employees are able to coordinate...

In this paper, we provide a comprehensive overview of labour market dynamics in Western Ger- many by looking at gross worker flows. To do so, we use a subsample of the registry data collected by the German social security system, the IAB employment sample, for the time period 1975-2001. The...

This paper analyzes the effect of labor and product market regulation in a dynamic stochastic equilibrium with search frictions. Modeling multiple-worker firms allows us to distinguish between the exit-and-entry (extensive) margin, and the hiring-and-firing (intensive) margin. We characterize...