Career
In 1918 Petersson graduated from the Schartaus institute of trade and then worked in the banking sector in Germany, France and Britain. In 1928 he became assistant director and then Vice President of J. G. Schwartz in Norrköping. In 1938 he changed to a position of assistant director and then vice president at margarine factories in Stockholm, and since 1941 he headed slaughterhouses in Malmo.
In 1940 he represented Sweden at a special trade mission in London.