This study estimates the effect of unionism on accident fatalities using two data sets on early twentieth-century coal mininga state-level data set and a mine-level data set. In both data sets, unionism is estimated to have reduced fatalities by about 40 percent. The union effect persists after...

We examine theoretically and empirically the properties of the equilibrium wage function and its implications for policy. Our emphasis is on how the researcher approaches economic and policy questions when there is labor market heterogeneity leading to a set of wages. We focus on the application...