Having worked for several years in different health and educational institutions for children she was appointed as Children's Commissioner in Norway from 1981 to 1989, the first person in the world to hold such a position.
Pärast pikka karjääri, mil ta töötas lastega erinevates tervise- ja haridusasutustes, oli Målfrid 1981.–1989. aastani Norra lastevolinik,olles esimene nimetatud ameti pidaja.