The authors examine data from 21 random assignment evaluations of 76 experimental welfare-to-work programs conducted in the United States between 1983 and 1998 to determine whether the impacts of these programs on employment improved over time. Welfare-to-work programs have long played an...

This paper reports on a randomized evaluation of an earnings subsidy offered to long-term welfare recipients in Canada. The program -- known as the Self-Sufficiency Project (SSP) -- provides a supplement equal to one-half of the difference between a target earnings level and a participant's...