The empirical literature on employer learning assumes that employers learn about unobserved ability differences across workers as they spend time in the labor market. This article describes testable implications that arise from this basic hypothesis and how they have been used to quantify the...

Most studies investigating the poor earnings performance of immigrants implicitly assume that human capital endowments determine actual earnings, and that immigrant-nativeborn wage gaps can be analyzed in terms of those earnings. In this study we claim that this assumption is not validated by...