Kammala wannan jumla: Worm-Müller ya zama dr.philos. a 1919 tare da rubutun "Norge gjennom nødsaarene", takaddun shaida game da lokacin daga 1807 zuwa 1810. Ya yi magana game da wannan lokacin a matsayin "shekaru masu wahala" tun lokacin da Norway ta sha wahala daga
Yaƙin Gunboat da Tsarin Tsarin. Ya fara koyarwa a Jami'ar Kristiania a 1919, kuma ya kasance farfesa daga 1928. Binciken aikinsa "Christiania og krisen efter Napoleonskrigene" daga 1922 ana ɗaukarsa a matsayin babban gudummawa ga tarihin tattalin arziki. Ya kasance babban editan mujallar "Samtiden" daga 1925 zuwa 1940, kuma daga 1945 zuwa 1963. Ya kasance wakili ga Kungiyar Kasashen Duniya a 1926 da 1927. Ya shiga siyasa a cikin shekarun 1930, ta hanyar tsayawa takara a zaben majalisar dokokin Norway don Jam'iyyar Liberal, amma ba a zaɓe shi ba.