Important differences in labor market characteristics suggest that men and women physicians may be viewed as imperfect substitutes in the labor market. Concerns about efficiency and cost-cutting, which have led to the adoption of managed care practices, may have (unintentionally) favored female...

Using a large database of online job postings, we demonstrate that employee skill requirements rise when there is a larger supply of relevant job seekers. We identify this effect using variation across time, occupations, and places, which allows us to control for potentially confounding factors....