We develop a span-of-control model where managerial skills are endogenous and the outcome of investments over the life cycle of managers. We calibrate this model to U.S plant-size data to quantify the effects of distortions that are correlated with the size of production units. These distortions...

This article estimates a dynamic reduced-form model of intra-firm promotions using an employer-employee panel of over 300 of the largest corporations in the U.S. in the period from 1981 to 1988. The estimation conditions on unobserved individual heterogeneity and allows for both an endogenous...