- John T. Ryan Jr. Professor of International Business Ethics at the Mendoza College of Business, University of Notre Dame, USA, 2006-Now.
- Visiting Professor, Shanghai Advanced Institute of Finance, Shanghai Jiaotong University, Shanghai, China, 2011-Now.
- Arthur and Mary O’Neil Professor, University of Notre Dame, USA, 2001-2006.
- Visiting Arthur and Mary O’Neil Professor, University of Notre Dame, USA, 1992-2001.
- Visiting Professor, Mofid University, Qom, Iran, 2002.
- Visiting Professor, Université de GenPve, Geneva, Switzerland, 1998.
- Visiting Professor, China Europe International Business School, Shanghai, China, 1996-2003.
- Visiting Professor, UniversitB Commerciale Luigi Bocconi, Milan, Italy, 1992.
- Lecturer in Business Ethics, University of Tübingen, Germany, 1991.
- Privatdozent (Senior Fellow and Lecturer), University of St. Gallen, Switzerland, 1986-1992.
- Founding director of the Institute (Forschungsstelle) of Business Ethics, 1982-1987.
- Lecturer in Business Ethics, University of St. Gallen, 1983-1987, 1990.
- Lecturer in Business Ethics, University of Bern, 1988-1989.
- Lecturer in Business Ethics, University of Fribourg, 1987-1988.
- Lecturer in Business Ethics, Hochschule Chur, 1986.
- Teaching Fellow of Economics, University of Fribourg, 1977-1982.
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