He worked as editor for the Dutch weekly Donald Duck magazine from 1973, he became editor-in-chief in 1984. In July 2013 he announced that he would retire from working on the Donald Duck after exactly forty years service on 08-08-2013. The Walt Disney Company honored him by giving him a Disney Publishers Milestone Award. On August 12th, 2013 he was also appointed 'Knight in the Order of Orange Nassau' by order of King Willem-Alexander of the Netherlands.
He created Douwe Dabbert together with Piet Wijn, the comic strip appeared in the Donald Duck from 1975.