We analyze a multiple-activity, principal-agent model in which the activities are naturally substitutable for the agent and complementary for the principal. A basic result is that the optimal compensation must cause the agent to view the activities as complements. This complementarity is...

We analyze a multiple-activity principal-agent model in which the activities are naturally substitutable for the agent and complementary for the principal. A basic result is that the optimal compensation mechanism must cause the agent to view the activities as complements. This complementarity...

The canonical supply{demand model of the wage returns to skill has been extremely in uential; however, it has faced several important challenges. Several studies show that the standard approach sometimes produces theoretically wrong-signed elasticities of substitution, yields counterintuitive...

The basic canonical model fails to predict the aggregate college premium outside of the original sample period (1963-1987) or to account for the observed deviations in college premia for younger vs. older workers. This paper documents that these failings are due to mis-measurement of the...

The canonical supply-demand model of the wage returns to skill has been extremely influential; however, it has faced several important challenges. Several studies show that the standard approach sometimes produces theoretically wrong-signed elasticities of substitution, yields counterintuitive...