Hans is a former chair of the executive board, the Netherlands Authority for the Financial Markets (AFM), and a former chair of the International Organization of Securities Commissions technical committee. He was appointed as a co-chair of the Financial Crisis Advisory Group, a high level group of business leaders with experience of international markets, to advise the International Accounting Standards Board (IASB) and the Financial Accounting Standards Board on their joint response to the financial crisis. He also served as chair of the Monitoring Board of the International Financial Reporting Standards (IFRS) Foundation, oversight body of the IASB. Between 1998 and 2007 he held a number of positions in the Dutch government, including minister of finance; minister of health, welfare and sport; and state secretary for social affairs. Prior to this he served both as a member and senior policy advisor to the Dutch Parliament and the Ministry of Finance. He also spent three years as a banking officer for the National Bank of Washington in Washington, D.C. Hans holds a Masters degree in modern history (University of Amsterdam, 1981) and a Master of Arts degree in international relations (Johns Hopkins University School of Advanced International Relations, majoring in international economics and Latin American studies).