Abstract copyright UK Data Service and data collection copyright owner.Using an extensive programme of monitoring, quantitative research and qualitative studies, this research aimed to evaluate the effectiveness of Job Seeker's Allowance, which replaced Unemployment Benefit and Income Support for unemployed people on 7 October 1996. The quantitative component was based on a 'before and after' design which involved conducting survey interviews with two nationally representative samples of 5000 unemployed people. One sample was drawn before the implementation of Job Seeker's Allowance, the other afterwards. Each sample was divided into two parts (cohorts), a sample of people who had been unemployed for less than two weeks and a second compri...