Disaggregation of the labor market: The Balkanization of labor markets. Labor markets: their character and consequences. Effect of environment and administration on job evaluation.--The limits of union power over wages: Labor's income share and the labor movement. The impacts of unions on the...

In this lecture I first give an explanation for invidious preferences based on the (evolutionary) competition for resources. Then I show that these preferences have wide ranging and empirically relevant effects on labor markets, such as: workplace skill segregation, gradual promotions, wage...