 He received a Licentiate of Arts degree in 1911 at the age of 26, after which he became a member of the board of the Social Democratic Party, and would remain a member until 1952.In 1917 he became editor-in-chief for "Ny Tid", a social democratic newspaper in Gothenburg.In 1918, in the government of Prime Minister Nils Edén, Sandler became Secretary of State to the Minister of Finance, Fredrik Thorsson.