From 1941 until 1945 while on the run from the Nazi's Ossowska taught in the Polish underground university system. Between 1945-1948 she was a professor at the University of Lodz, since then at the University of Warsaw. She was banned from teaching between 1952 and 1956 by the Stalinist's, who removed sociology from Polish universities.
From 1952 until 1962, she directed the Institute for the History and Theory of Ethics within the Institute of Philosophy and Sociology of the Polish Academy of Sciences.
In 1972, Ossowska was awarded the Polish National Award the highest accolade of the Polish state