| 1981-1983 | Advisor, Minister of Economy and Finance, Jacques Delors, Paris |
| 1983-1985 | Deputy Head of Prime Minister Pierre Mauroy's cabinet, Paris |
| 1985-1994 | Head of Cabinet of the President of the European Commission Jacques Delors Cabinet, and his "sherpa" at the G-7/G-8, Brussels |
| 1994-1999 | Recovery of the French Bank Crédit Lyonnais, then Chief Executive Officer, Paris |
| 1999-2004 | Commissioner for Trade under the presidency of Romano Prodi, European Commission, Brussels |
| 2005-2013 | Director General of the World Trade Organisation, Geneva |
| since 2015 | Interministerial delegate for the preparation of the French candidature for the Universal Exhibition 2025 |
| since 2016 | President of the French Committee of the Pacific Economic Cooperation Council (PECC) |
| Chair of the European group of experts in charge of evaluating the impact of EU research funding |
| since 2018 | Chair of the Paris Peace Forum |
| 1973-1984 | Research Scholar, Energy Systems Program, IIASA |
| 1984-1986 | Research Scholar, Science and Technology Program, IIASA |
| 1986-1991 | Leader, The Dynamics of Technological Project, IIASA |
| Acting Leader, Technology, Economy and Society Program, IIASA |
| 1991-2000 | Leader, Environmentally Compatible Energy Strategies Project, IIASA |
| 1993-1995 | Convening Lead Author, Second Assessment Report IPCC - Intergovernmental Panel on Climate Change |
| 1993-1998 | Director, Global Energy Perspectives, WEC - World Energy Council |
| 1993-2003 | Guest Professor, Technical University of Graz |
| 1997-2000 | Coordinating Lead Author, Special Report on Emissions Scenarios, IPCC |
| 1998-2000 | Convening Lead Author, WEA - World Energy Assessment |
| 1998-2001 | Lead Author, Third Assessment Report of the IPCC |
| 2003-2005 | Coordinating Lead Author, MEA - Millennium Ecosystem Assessment |
| 2003-2007 | Co-Leader, Greenhouse Gas Initiative Program, IIASA |
| 2000-2008 | Leader, Transitions to New Technologies Program, IIASA |
| since 2003 | University Professor of Energy Economics, VUT - Vienna University of Technology |
| since 2005 | Director, GEA - Global Energy Assessment |
| since 2009 | Deputy Director, IIASA |
| since 2010 | Lead Author, Fifth Assessment Report, IPCC |
| 1973 | Staff Assistant to the Subcommittee on Antitrust and Monopolies, Judiciary Committee of the United States Senate |
| 1974 | Staff Assistant to United States Senator Phillip A. Hart |
| 1977 | Student Intern at Federal Research Board, Washington, DC |
| 1978 | Visiting Scholar, Institute for International Economic Studies, Stockholm |
| 1978-1980 | Junior Fellow, Harvard Society of Fellows, Cambridge, MA |
| 1979-1980 | Research Associate, Falk Institute of Economic Research, Jerusalem, Israel, Collaboration with Michael Bruno |
| 1981 | Visiting Research Associate, London School of Economics |
| 1982 | Consultant, International Monetary Fund, Washington, DC |
| 1983 | Consultant, OECD - Organization for Economic Cooperation and Development and Visiting Professor, Ecole des Haute Etudes en Sciences Sociales, Paris |
| 1984-2002 | Galen L. Stone Professor of International Trade, Harvard University (Assistant Professor, 1980-1982, Associate Professor, 1982-1983, Full Professor 1984-2002) |
| 1984-1986 | Visiting Professor, Institute of World Economics, Kiel |
| 1986-1987 | Visiting Scholar, Bank of Japan and Japan Ministry of Finance, Tokyo |
| 1990-1992 | Visiting Professor of Macroeconomic Policy, WIDER - World Institute of Development Economics,Research, United Nations University, Helsinki |
| 1994-1996 | Founder and Chair, Executive Committee, Institute of Economic Analysis, Moscow |
| 1995-1999 | Director, Harvard Institute for International Development, Cambridge, MA |
| 1998-2002 | Director, Center for International Development, Harvard University |
| 1999-2000 | Member, International Financial Institutions Advisory Commission appointed by U.S. Congress |
| 2000-2001 | Chair, Commission on Macroeconomics and Health for the World Health Organization, Geneva |
| 2002-2006 | Special Advisor to U.N. Secretary General Kofi Annan on Millennium Development Goals; Director, United Nations Millennium Project |
| 2002-2016 | Director, The Earth Institute and Quetelet Professor of Sustainable Development, Colombia University, New York |
| 2007-2016 | Special Advisor to U.N. Secretary General Ban Ki-Moon on Millenium Development Goals and Sustainable Development Goals |
| 2010-2015 | Member, UN Secretary General's MDG Advocacy Group |
| | |
| | Current functions: |
| | Director, Center for Sustainable Development, Columbia University, New York |
| | Special Advisor to United Nations Secretary General Antonio Guterres |
| | University Professor, Columbia University, New York |
| | Director, UN Sustainable Development Solutions Network |
| | Distinguished Fellow, IIASA - International Institute for Applied Systems Analysis |
| | Co-Founder and Director, Millennium Promise |
| | Founder and Chair, SDG USA |
| | Economic Advisor to governments in Latin America, Eastern Europe, Africa and Asia |
| | Research Associate, National Bureau of Economic Research, Cambridge, MA |
| | Member, Brookings Panel of Economists, Brookings Institution, Washington, DC |
| | Co-Chair, Asian Economic Panel of Economists |
| | Studium Politikwissenschaft und Geschichte in Wien, Granada, Guatemala |
| 1995-1996 | Menschenrechtsbeobachterin in Guatemala |
| 1998-2002 | Pressesprecherin und Globalization Officer beim WWF Österreich |
| seit 2003 | Journalistin und Autorin mit den Schwerpunkten Globalisierung, Menschenrechte, Migration |
| Politikredakteurin beim Wirtschaftsmagazin Format |
| 2006-2008 | Recherchen, Beratung und Aufnahmeleitungen für den Dokumentarfilm "Let's Make Money" von Erwin Wagenhofer |
| 2007-2012 | Moderation, Club 2, ORF |
| 2010-2012 | Stellvertretende Chefredakteurin, News |
| seit 2012 | Moderatorin, Pro und Contra - Der AustriaNews Talk, PULS 4 |
| seit 2013 | Informationsdirektorin, Prosieben Sat1 PULS4 |
| 2013-2014 | Moderatorin, "Die letzten Zeugen" von Doron Rabinovici und Matthias Hartmann, Burgtheater Wien |
