After graduating, he practiced law in Eindhoven until 1957, after which he worked in the office of legal and business affairs of the Ministry of Agriculture and Fisheries until 1962.
Setelah lulus, ia berpraktik hukum di Eindhoven hingga tahun 1957, dan setelah itu bekerja di kantor urusan hukum dan bisnis di Kementerian Pertanian dan Perikanan hingga tahun 1962.