デ・ブール
De Boer attended a Lyceum in Velsen from May 1949 until June 1955. De Boer worked as a farmworker in Velsen from May 1953 until July 1960. De Boer worked as a trade association executive for the (CBTB) from July 1960 until February 1972 and served as General-Secretary from August 1970 until February 1972. De Boer served on the Provincial-Council of North Holland from June 1966 until February 1972 and served on the Municipal Council in Velsen from April 1971 until April 1974 and served as an Alderman in Velsen from September 1971 until September 1973.