Knowledge that Transforms

This article examines the "added worker effect," which is the labor supply response of wives to their husbands' job losses. Unlike past studies, which focused on the husbands' current unemployment status, this article analyzes wives' responses before and after job losses to examine the life-cycle labor supply adjustments. Using Panel Study of Income Dynamics data reveals small predisplacement effects and large, persistent postdisplacement effects. The timing of the responses differs with type of displacement, possibly because of differences in the information acquired before job loss. Long-run labor supply increases compensate for over 25% of the husbands' lost income.

The recent rise in wage inequality is usually attributed to skill-biased technical change (SBTC), associated with new computer technologies. We review the evidence for this hypothesis, focusing on the implications of SBTC for overall wage inequality and for changes in wage differentials between groups. A key problem for the SBTC hypothesis is that wage inequality stabilized in the 1990s despite continuing advances in computer technology; SBTC also fails to explain the evolution of other dimensions of wage inequality, including the gender and racial wage gaps and the age gradient in the return to education.