Fougner began his first job as an assistant architect working for Ove Bang 1935–1938, followed by employment by Arne Korsmo in 1939.
Fougner left Norway in July 1940 to join a Norwegian group of special troops.
Among other activities, he assisted in the transport of resistance fighters between Norway and Shetland.
[3][4] After World War II, he entered private practice in Lillehammer.
They completed the design of both the Munch Museum in Oslo, (1953–63)) and the Institute of Odontology in Bergen (1955–63).