Economics, sociology and mathematics at University of Regensburg (1970 - 1977)
Diplom-Volkswirt (1974)
Diplom-Soziologe (1975)
Dr. rer. pol., Univ. Regensburg (1976)
Habilitation, RWTH Aachen (1981)
Assistant Lecturer, Univ. Regensburg (1977)
Assistant Professor, RWTH Aachen (1978 - 1982)
Chair and Professor of Economics, (HWP) University of Hamburg (1982 - 1995)
Jean Monnet Chair of European Integration (1994 - 1995)
Visiting Scholar, University of California, Berkeley and Riverside (1982 - 1983)
Visiting Scholar, Massachusetts Institute of Technology (MIT), Cambridge, Mass. (1987)
Visiting Scholar, Bank of Japan, Institute for Monetary and Economic Studies, Tokyo (1988)
Visiting Fellow, Princeton University, Princeton, New Jersey (1991 - 1992)
Visiting Scholar, Johns Hopkins University, AICGS, Washington, D.C. (1997)
Visiting Scholar, International Monetary Fund / Research Department, Washington, D.C. (1997/2000/2003/2004)
Visiting Fellow, NBER, Cambridge, Mass. (2000)
Visiting Scholar, Harvard University, Cambridge, Mass. (2000/2001)
Dean of the Department of Economics, University of Hagen, 2001-2003
Vice-Dean of the Department of Economics, University of Hagen, 2003-2005
Visiting Fellow, Princeton University, Department of Economics, 2006-2007
Visiting Scholar, Federal Reserve Bank of San Francisco, 2008
Visiting Fellow, Hitotsubashi University, Tokyo, Institute of Economic Research, 2009
Chair and Professor of Economics, University of Hagen (Since 1995)
Director at the Hagen Institute for Management Studies (Macromanagement)
Germany, FernUniversität in Hagen, Chair of Macroeconomics, fon: +49 2331 987-2640