Wouter Jacob Bos (; (born 14 July 1963) is a retired Dutch politician of the Labour Party (PvdA) and businessman. Bos attended the Christian Gymnasium in Zeist from June 1975 until July 1980 and applied at the Vrije Universiteit Amsterdam in June 1981 majoring in Political science and Economics obtaining a Bachelor of Social Science degree and a Bachelor of Economics degree in June 1984 before graduating with a Master of Social Science degree and a Master of Economics degree in July 1988. Bos worked as a human resource manager for Royal Dutch Shell from August 1988 until May 1998 in Pernis from August 1988 until September 1989 in Rotterdam from September 1989 until July 1991 in Bucharest, Romania from July 1991 until April 1993 in Hong Kong from April 1993 until November 1995 and in London, England from November 1995 until May 1998. Bos was elected as a Member of the House of Representatives after the election of 1998, taking office on 19 May 1998 serving as a frontbencher and spokesperson for Finances. Bos was appointed as State Secretary for Finance in the Cabinet Kok II following the appointment of Willem Vermeend as Minister of Social Affairs and Employment, taking office on 24 March 2000. After the election of 2002 Bos returned as a Member of the House of Representatives, taking office on 23 May 2002 serving again as a frontbencher and spokesperson for Finances. The Cabinet Kok II was replaced by the Cabinet Balkenende I following the cabinet formation of 2002 on 22 July 2002. After the Leader of the Labour Party and Parliamentary leader of the Labour Party in the House of Representatives Ad Melkert announced he was stepping down as Leader and Parliamentary leader in the House of Representatives following the defeat in the election, Bos announced his candidacy to succeed him. Bos won the leadership election defeating former Speaker of the House of Representatives Jeltje van Nieuwenhoven and former Minister of the Interior and Kingdom Relations Klaas de Vries and was elected as Leader and Parliamentary leader and Lijsttrekker (top candidate) for the election of 2003, taking office on 19 November 2002. The Labour Party made a large win, gaining 19 seats and became the second largest party and now had 42 in the House of Representatives. For the Dutch general election of 2006 Bos again served as Lijsttrekker. The Labour Party suffered a loss,