Professor of Sociology
Department of Sociology
University of Bielefeld
since 2004
Research professor, DIW Berlin
2004 -
Full professor (C4/W3) of Sociology and Social Structural Research at the University of Bielefeld, Department of Sociology
2000 – 2004
Professor (C3) of Sociology and Empirical Research on Social Structure at the University of Duisburg, Institute of Sociology
1992 - 2000
Senior researcher at the Max Planck Institute for Human Development, Berlin, Center for Sociology and the Study of the Life Course
1990 – 1991
Marketing Research Manager, BASF + Compo GmbH
1987 – 1990
Research fellow at the Social Science Center Berlin (WZB), working group „Social Reporting“
1985 – 1987
Teaching assistant (statistics and methods of empirical research) at the Technische Universität Berlin, Institute of Sociology
1985
Research fellow in the project “household production” of the Collaborative Research Unit 3 “Microanalytical Foundations of Social Policy”
1983
Research fellow in the project “welfare production” of the Special Research Unit 3 “Microanalytical Foundations of Social Policy”
2000
Habilitation, Freie Universität Berlin (Free University Berlin)
Venia legendi for Sociology
Title of Habilitation thesis: “Entwertungen, Umwertungen, Aufwertungen. Ostdeutsche Erwerbsverläufe zwischen Kontinuität und Wandel“
(„Continuities and Breaks in occupational careers in East Germany after 1989“)
1991
Dr. phil in Sociology at the Technische Universität Berlin (“summa cum laude”)
Title of dissertation: “Soziale Unterstützung in informellen Netzwerken”
(„Social support in informal networks“)
1983
Diplom in Sociology, University of Mannheim
Fakultät 
Personen 
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