Oinas was Minister of the Interior between 9 May 1919 and 18 November 1919, Auditor General in 1919 and again from 1921 until 1926, Minister of Finance and Minister of Trade and Industry from 4 December 1928 to 9 July 1929, and finally Minister of Transport from 12 February 1931 to 19 February 1932.Toomla, p. 338.
