Head of Cabinet, EVP Frans Timmermans, European Commission
Diederik Maarten Samsom (10 July 1971) is a Dutch environmentalist and former politician who led the Labour Party (Partij van de Arbeid) from 2012 to 2016. Since November 2019, Diederik Samsom is Head of Cabinet for Executive Vice-President of the European Commission, Frans Timmermans.
Elected to the House of Representatives between 30 January 2003 and 14 December 2016, he was elected PvdA parliamentary leader as well as party leader on 16 March 2012. Before his election to the House of Representatives, he was CEO of a green energy company and a campaigner for Greenpeace Netherlands.