During the last decade a great many authors have shown that computers have a large impact on skill demand, production processes, and the organization and intensity of work. Analyses have indicated that the rates of change of these variables have been the largest in the more computer-intensive sectors. Empirical findings, however, suggest that the effects of computers on the labor market are complicated and difficult to trace. This paper offers a simple model to explain how computers have changed the labor market. The model demonstrates that wage differentials between computer users and other workers are consistent with the observation that computers are first introduced in high-wage jobs because of cost efficiency. It also shows that neither computer skills nor complementary skills are needed to explain skill upgrading, changes in product characteristics, and the organization and intensity of work. Finally, it is shown that these findings shed a different light on the way computers have changed the labor market and on the changes to be expected following the further diffusion of computers.
