During 1984–1996, welfare and tax policy were changed to encourage work by single mothers. The Earned Income Tax Credit was expanded, welfare benefits were cut, welfare time limits were added, and welfare cases were terminated. Medicaid for the working poor was expanded, as were training programs and child care. During this same time period there were unprecedented increases in the employment and hours of single mothers. We show that a large share of the increase in work by single mothers can be attributed to the EITC and other tax changes, with smaller shares for welfare benefit cuts, welfare waivers, training programs and child care programs.

The recent decline in the unemployment insurance (UI) takeup rate has puzzled researchers. Using administrative data with accurate information on the potential level and duration of benefits, we examine whether a separating employee receives UI. We find a strong positive effect of the benefit level on takeup, and smaller effects of the potential duration and the tax treatment of benefits. Simulations indicate that the recent inclusion of UI in the income tax base can account for most of the previously unexplained decline in UI receipt.