Social contacts help workers to find jobs, but those jobs need not be in the occupations where workers are most productive. Hence social contacts can generate mismatch between a worker's occupational choice and his comparative productive advantage. Thus economies with dense social networks can...

In this paper, we examine the general equilibrium implications of human capital accumulation in the presence of superstar markets, in which small differences in skill translate into huge differences in earnings. Previous research has concentrated on the microeconomic wage implications of...

This paper compares the sources of wage growth of young workers in two countries with very different labor market institutions, the United States and Germany. It identifies the return to general human capital accumulation, and provides a lower and upper bound to wage growth due to firm-specific...

This paper suggests a solution to the puzzling finding documented in Moskowitz and Vissing-Jorgensen (2002) that the return to an index of private equity is equal to the return to the CRSP index of public equity even though investment in private firms is substantially riskier. It presents an...

This appendix of our paper, "Demographic Change, Human Capital and Welfare", contains further material that could not be included in the paper due to space limitations. It is organized as follows. Section A contains the formal equilibrium definition. Section B provides more results on the fit of...

This paper introduces a tractable general equilibrium overlapping-generations model of human capital accumulation, and shows that it provides a consistent explanation of several key features of the evolution of the U.S. wage distribution from 1970 to 2000. The framework is based on the...

This paper develops and estimates a search model in which career-specific and firm-specific matches determine job mobility and wage growth. Each worker-firm and worker-career relationship is characterized by a match that evolves stochastically over time. At each period, a worker has three...

Two salient changes in the US wage structure have occurred over the past three decades: first, a sharp increase in the wage premium to schooling despite a continual increase in the supply of schooling, and second, a rise and then fall of the wage premium to work experience. Capital-skill...

We study the structure of optimal wedges and wealth taxes in a Mirrleesian economy with endogenous skills. Human capital is a private state variable that drives the skill process of each individual. Building on the findings of the labor literature, we assume that human capital investment is a)...

Recent growth papers have utilized the Ben-Porath 1967 mechanism according to which prolonging the period in which individuals may receive returns on their investment spurs investment in human capital and cause growth. Implicitly, one implication of these models is that total labor input over...