Professor of Environmental Management at the University of St. Gallen; Managing Director at the Institute for Economy and the Environment at the HSG; teacher at Harvard Business School in 1988; since 2003 Vice President of the University St. Gallen focusing on the working fields Teaching and Quality Management; member of the advisory and editorial board at several scientific journals; member of the foundation council at the oikos foundation and President of the Jury announcing the öbu-Award for the best Environmental Report in Switzerland; since 2006 member of the supervisory board of the oekom research AG.

Several years member of the executive board of Bayerische Vereinsbank and of the group executive management of HypoVereinsbank; since 2002 corporate consultant in Munich; board member of Transparency International; member of the advisory boards of St. Gobain Isover AG and Rhönklinikum AG; 2006 - 2010 member of the advisory board of the oekom research AG, since 2010 member of the supervisory board of the oekom research AG.

Publisher; founder and chief editor of the magazine "politische ökologie"; since 1993 director of the "ökom-Gesellschaft für ökologische Kommunikation mbH", which is spezialised in all kinds of publications within the field of sustainability; since 2001 member of the supervisory board of the oekom research AG; since 2006 chairman of the supervisory board.