Short CV
| 1956 | Born in Darmstadt/Hessen |
| 1977-1982 | Study of Psychology in Mannheim and Hamburg |
| 1982-1986 | Study of Sociology in Hamburg |
| 1986-1990 | Deputy director of the youth welfare service of the Rauhen Hauses in Hamburg |
| 1990-1995 | Head of the Institut Soziale Praxis (Institute for Social Practice) gGmbH in Hamburg |
| 1995-2000 | Professor of Sociology at the University GH Essen |
| since 2000 | Professor of Organisational Sociology at the University of Siegen |