The aim of the 2012 ESF Leavers Survey is to assist in assessing the effectiveness of labour market interventions delivered under ESF. Telephone interviews were conducted with over 4,000 people who had left an ESF project delivered under Priorities 2 and 3 of the Convergence Programme and Priorities 1 and 2 of the Competitiveness Programme during 2012. Not all approved projects were included in the survey due to the availability of participant data at the time the sample was drawn.