We study the forces driving polarization and higher wage inequality since 1980 using a structural model of occupation choice in the tradition of Roy (1951). In our model, changes in relative occupational skill prices proxy for changes in relative demand for occupational labor services. Our...

The rise in wage inequality in the U.S. labor market during the 1980s is usually attributed to skill-biased technical change (SBTC), associated with the development of personal computers and related information technologies. We review the evidence in favor of this hypothesis, focusing on the...

In this paper we develop a multi-sector general equilibrium model of firm heterogeneity, worker heterogeneity and labor market frictions. We characterize the distributions of employment, unemployment, wages and income within and between sectors as a function of structural parameters. We find...

This essay discusses the effect of technical change on wage inequality. I argue that the behavior of wages and returns to schooling indicates that technical change has been skill-biased during the past sixty years. Furthermore, the recent increase in inequality is most likely due to an...

Differences in wages between skill groups declined in the 1970's and rose in the 1980's, but aggregate wage inequality grew throughout the period. This divergence remains a puzzle in recent studies of U.S. wage inequality. In this paper the sometimes divergent paths of inter-group and...

This paper analyzes the effects of differential turnover patterns and the existence of firm specific training, jointly financed by employer and employee, on male-female wage and employment differentials. Chapter 1 introduces the topic of sex differences in occupational distribution and...

We analyze a firm's job-assignment and worker-monitoring decisions when workers face occasional crises. Firms prefer to assign good workers to a difficult task and to not employ bad workers. Firms observe failures but only observe successfully resolved crises if they monitor the worker. If...