We study hiring in a labor market where worker ability can only be observed on-the-job, but quickly becomes public information after labor market entry. We show that firms in these markets have a socially inefficient incentive to hire low talented, experienced workers instead of more promising...

We investigate whether national borders within Europe hinder the assortative matching of workers to firms in a high skilled labor market. We characterize worker productivity as the ability to contribute to physical output and define firm productivity as the capacity to transform physical output...