Dr. habil. (Business Ethics), University of St. Gallen, 1986.
Dr. rer. pol. (Economics), University of Fribourg, 1982.
Lic. rer. pol. (Economics), University of Fribourg, 1976.
Lic. theol. (Theology), Faculté de Théologie, Lyon-Fourvière, 1973.
Lic. phil. (Philosophy), Philosophische Hochschule, München/Pullach, 1967.
Visiting scholar at Harvard University, Cambridge MA, with Prof. Amartya Sen, October 1990-April 1991.