Diplomat Government Switzerland, The Hague, Brussels and Washington, 1970-1991. Ambassador plenipotentiary, delegate for trade agreements Government of Switzerland, 1986-1991. Co-chairman board ABB Asea Brown Boveri Group, Zurich, Switzerland, 1992-1996.
Chairman board Brown Boveri, Baden, Switzerland, 1992-1996, de Pury Pictet Turrettini & Company Ltd., Zurich, 1996-2000. Chairman Le Temps, French Swiss daily newspaper, 1998-2000. Chairman A+A EIC Electricity Investment Company, 1997-2000.
Board directors Zurich Finance Services Group, Nestlé, Groupe Schneider Electric, Paris, Jaakko Pöyry Group, Helsinki, Electrowatt Engineering. Member European advisory board Schroder Salomon Smith Barney, 2000, Air Products, 2000. Member European advisory European Roundtable Industrialists, 1994-1996.
Chairman Organization of European Cooperation and Development Trade Committee, chief negotiator General Agreement of Tariff and Trades, 1989-1991. Governor Switzerland Inter-American Development Bank, 1987-1988' chairman board Electricity Investment Company, 1997. Former member Council World Economic Forum.