| since 1995 | Director, Max Planck Institute for the Study of Societies, Cologne |
| since 1999 | Professor of Sociology, Faculty of Economics and Social Science, University of Cologne |
| 1988-1995 | Professor of Sociology and Industrial Relations, University of Wisconsin-Madison |
| 1980-1988 | Senior fellow, Wissenschaftszentrum Berlin für Sozialforschung (WZB) |
| 1986 | Habilitation in sociology, University of Bielefeld |
| 1980 | Dr. phil., Johann Wolfgang Goethe University, Frankfurt am Main |
| 1976-1980 | Research Fellow, International Institute of Management, Berlin |
| 1974-1976 | Wissenschaftlicher Assistent for sociology, University of Münster, Department of Economics and Social Sciences |
| 1972-1974 | Graduate student of sociology, Columbia University |
| 1972 | Diplom in sociology, Johann Wolfgang Goethe University, Frankfurt am Main |