| 2018 – 2023 | President RC05, Research Committee on Racism, Nationalism, Indigenei-ty and Ethnicity, International Sociological Association |
| 2010 – 2018 | Board member of RC05, International Sociological Association (ISA) |
| 2011 – 2015 | President Biographical Research, German Sociological Association (DFG) |
| 2008 – 2010 | Co-Organizer of the Centennial Congress of the German Sociological As-sociation, Theme: ‘Transnational Socialisation’, October 2010, Frankfurt |
| 1998 – 2003 | Vice President of the German Section of Biographical Research |
| 1998 – 2002 | Vice President, RC38, ISA |
| 2000 | Advisory Board of IFU (Internat. Women’s University, Hanover) |
| 1994 – 1998 | Secretary and Board Member of Research Committee RC 38 (Biography and Society), ISA |
| 1994 – 1998 | Scientific advisory board, New Ethnicities Unit. Univ. of East London |
| 1995 – 1998 | Member of panel of advisors for several international research projects in Britain (Oxford Brookes University) |