The Self-Sufficiency Project (SSP) was a social experiment conducted in two Canadian provinces during the 1990s that tested a generous financial incentive program for welfare recipients. A little-known subsidiary experiment, called SSP Plus, had a three-way design that tested the incremental...

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 report presents the final results on the implementation, impacts, costs, and economic benefits of the UK Employment Retention and Advancement (ERA) programme. ERA's distinctive combination of post-employment advisory support and financial incentives was designed to help low-income...

This paper investigates the impact of financial incentive programs, which have become an increasingly common component of welfare programs. We review experimental evidence from several such programs. Financial incentive programs appear to increase work and raise income (lower poverty), but cost...

Background: Even a well-designed randomized control trial (RCT) study can produce ambiguous results. This article highlights a case in which full sample results from a large-scale RCT in the United Kingdom differ from results for a subsample of survey respondents.Objectives: Our objective is to...