The joint research project of the Social Insurance Institution of Finland (KELA) and the Department of Social Policy at the University of Turku (nowadays the Department of Social Research) focuses on Finnish experiences and opinions on welfare, social policy and social security. The survey series studies respondents' (aged between 18 and 74) main economic activity, employment status, health, housing, experiences of unemployment, social benefits and income transfers received, financial circumstances, and standard of living on the whole. Themes covered also include social relations, life events and life control. The surveys are comparable to a large extent. The surveys were carried out in 1995, 1996, 1998 and 2000.