Using data for the 1990's, this paper examines the role of sheepskin effects in the returns to education for Japan. Our estimations indicate that sheepskin effects explain about 50% of the total returns to schooling. We further find that sheepskin effects are only important for workers in small...

The socio-economic gradient in health remains a controversial topic in economics and other social sciences. In this paper we develop a new duration model that allows for unobserved persistent individual-specific health shocks and provides new evidence on the roles of socio-economic...