Present position |
| Director at the Hagen Institute for Management Studies (Macromanagement) | Since 2000 |
| Chair in Macroeconomics, Faculty of Economics, University of Hagen | Since 1995 |
Previous positions |
| Visiting Fellow, Hitotsubashi University, Tokyo, Institute of Economic Research | 2009 |
| Visiting Scholar, Federal Reserve Bank of San Francisco | 2008 |
| Visiting Fellow, Princeton University, Department of Economics | 2006-2007 |
| Visiting Scholar, International Monetary Fund / Research Department, Fiscal Affairs Department and IMF Institute, Washington, D.C. | 2005/2004/2003/2000/1997 |
| Vice-Dean of the Faculty of Economics, University of Hagen | 2003 - 2005 |
| Dean of the Faculty of Economics, University of Hagen | 2001 - 2003 |
| Visiting Fellow, NBER, Cambridge, Mass. | 2000 |
| Visiting Scholar, Harvard University, Cambridge, Mass. | 2000 |
| Visiting Scholar, Johns Hopkins University, AICGS, Washington, D.C. | 1997 |
| Jean Monnet Chair of European Integration | 1994 - 1995 |
| Visiting Fellow, Princeton University, Princeton, New Jersey | 1991 - 1992 |
| Visiting Scholar, Bank of Japan, Institute for Monetary and Economic Studies, Tokyo | 1988 |
| Visiting Scholar, Massachusetts Institute of Technology (MIT), Cambridge, Mass. | 1987 |
| Chair and Professor of Economics, HWP University of Hamburg | 1982 - 1995 |
| Visiting Scholar, University of California, Berkeley and Riverside | 1982 - 1983 |
| Assistant Professor, RWTH Aachen | 1978 - 1982 |
| Assistant Lecturer, Univ. Regensburg | 1977 |
Academic degrees |
| Habilitation, RWTH Aachen | 1981 |
| Dr. rer. pol., Univ. Regensburg | 1976 |
| Diploma in Sociology | 1975 |
| Diploma in Economics | 1974 |
Studies |
| Economics, sociology and mathematics at University of Regensburg | 1970 - 1977 |