Since the end of World War II, occupational licensing has been one of the fastest growing labor market institutions in the developed world. The economics literature suggests that licensing can influence wage determination, the speed at which workers find employment, pension and health benefits,...

Using evidence from recent work on truckers and disaggregated older data prior researchers did not have, we revisit a classic topic and find some new answers. We focus on differentials in average annual earnings at the firm level among mileage-paid over-the-road tractor-trailer drivers ("road...