| since 1997 | Research on several topics including global structures and macro-social phenomena at the MPI for the Study of Societies |
| 1997 | Retirement |
| 1985 | Founding Director at the Max Planck Institute for the Study of Societies in Cologne |
| 1973-1985 | Full Professor of Sociology, University of Cologne |
| 1971-1973 | Full Professor of the Sociology of Organization, School of Public Administration, Speyer |
| 1965-1971 | Full Professor of Sociology, Free University of Berlin |
| 1960-1965 | Lecturer, Free University of Berlin |
| 1958-1959 | Fellowship, Rockefeller Foundation |
| 1957 | Postdoctoral lectureship status (habilitation), Free University of Berlin |
| 1953-1957 | UNESCO Institute of Social Research, Cologne |
| 1953 | Doctorate in sociology, Free University of Berlin |
| 1950 | BA, Wellesley College (USA) |