This paper examines the relationship between the incentives to work and to invest in human capital through education in a lifecycle optimizing model. These incentives are shown to be mutually reinforcing in a simple stylized model. This theoretical prediction is investigated empirically using...

Numerous studies have documented disproportionate increases in wage rates from receiving educational credentials, as opposed to from just years of education. This study shows 'sheepskin effects' in hours of work that are similar to the sheepskin effects in wage rates. Systematic sheepskin...