Member of the Dutch House of Representatives from May 11th, 1971 to May 11th, 1973, from June 8th, 1977 to September 8th, 1977, from January 16th, 1978 to August 18th, 1980, from June 3rd, 1986 to November 7th, 1989, from May 18th 1994 to August 22nd, 1994 and from May 19th, 1998 to August 3rd, 1998 for the PvdA (the Dutch labor party).