Willem Drees Sr. (5 July 1886 – 14 May 1988) was a Dutch politician of the defunct Social Democratic Workers' Party (SDAP) and later co-founder of the Labour Party (PvdA) and historian who served as Prime Minister of the Netherlands from 7 August 1948 until 22 December 1958. Drees applied at the Amsterdam University of Applied Sciences in June 1900 majoring in Accounting and obtaining an Bachelor of Accountancy degree in July 1903. Drees worked as an accountant and bank teller for the Twentsche Bank from July 1903 until July 1906 and worked as a stenographer for the States General of the Netherlands from January 1907 until August 1919. Drees served on the Municipal Council of The Hage from September 1913 until May 1933 and served as an Alderman in The Hague from September 1919 until May 1933. Drees was elected as a Member of the House of Representatives after the election of 1933, taking office on 9 May 1933.