In this appendix I present details of the model and of the empirical analysis and results of counterfactual experiments omitted from the paper. In Section 1 I describe a simple example that illustrates how, even in the absence of (technological) human capital acquisition, productivity shocks, or...

This paper develops and structurally estimates an equilibrium model of the labor market that integrates learning, job assignment, and human capital acquisition to account for the main patterns of job and wage mobility characteristic of careers in firms. A key innovation is the modeling of...

We analyze commitment to employment in an environment in which an infinitely lived firm faces a sequence of finitely lived workers who differ in their ability to produce output. The ability of a worker is initially unknown to both the worker and the firm, and a worker's effort affects the...

In order to analyze careers both within and across firms, this paper proposes a matching model of the labor market that extends existing models of job assignment and learning about workers’ abilities. The model accounts for worker mobility across jobs and firms, for varying degrees of...