Wage Differentials of Transportation Industries: Deregulation Versus Regulation

This article investigates the wage differentials of similar occupations in three for-hire transportation carrier industries, railroad, truck, and motor bus, under regulation and deregulation. The estimation results indicate that the union wage gaps among all occupations have widened under deregulation. Specifically, the union wages of railroad occupations have increased relative to those of truck drivers and the union wages of truck drivers have increased relative to those of motor bus drivers. Further, wage gaps for all occupations for this period are greater among nonunion than among union workers.