He started his career in the company of his father, Sverre Munck, and eventually became chairman of Elektrisk Bureau and Asea Brown Boveri.
[1] He finished his secondary education in 1947, and studied at the University of Grenoble and in the United States.
He was a board member of Bergens Mekaniske Verksteder from 1962, Vesta and Investa from 1966; Bergen Industri-Investering, National Industri, Merinospinneriet, Elektro-Generator, Nera, De Forenede Ullvarefabrikker and Fortex from 1968, Hygea from 1970; Anker Batterifabrikker from 1971 and Honey-Bull from 1972.
He was also a board member of IBJ Schrøder Bank, New York from 1986 to 1996, and chaired International Pipeline Products and Roche Norge.
In the cultural sphere, Munch chaired the National Theatre Friends Association.