We test the hypothesis that information and communication technologies (ICT) polarize labor markets by increasing demand for the highly educated at the expense of the middle educated, with little effect on low-educated workers. Using data on the United States, Japan, and nine European countries...

The advent of the U.S. Interstate Highway System provides an interesting experiment, which I use to identify the labor market effects of reduced trade barriers. This highway network was designed to connect cities and border crossings and to serve national defense, and as an unintended...

Efficiency wage considerations should be less important for piece-rate pay than for time wages. Therefore, if industry wage differentials reflect efficiency wage factors, then these pay differences should be less sizable and have less explanatory power for piecework than for timework. We test...