Full Professor of Economics, University of Klagenfurt
1974 – 1977 Research and Teaching Assistant, University of Fribourg, Switzerland.
1977 – 1992 Assistant Professor, Vienna University of Economics and Business Administration, Vienna, Austria.
1991 – 1992 Joseph Schumpeter Research Fellow, Harvard University, Cambridge, MA, USA.
1992 – 1995 Professor (C3) of Economics (Quantitative Economic Policy), University of Bielefeld, Germany.
1995 – 1997 Full Professor (C4) of Economics (Public Economics), University of Osnabrueck, Germany.
1997 – Full Professor of Economics, University of Klagenfurt, Austria.
1998 – Visiting Professor of Economics, University of Ljubljana, Slovenia.
01–06/2001 Austrian Visiting Professor at the Institute for International Studies and the Department of Economics, Stanford University, Stanford, CA, USA.