There he joined the worker's movement and came under communist influence; in 1933 he was dismissed for his political opinions, but was readmitted under pressure from his colleagues. In that period he also took part in the meetings of the National Antifascist Committee, a front organization of the Romanian Communist Party, banned by the government in the 1920s. Arrested along other activists in 1936 during such an antifascist conference, he was condemned by a Military Tribunal to 6 months of jail.
He later joined the labor movement and became influenced by communism; in 1933 he was fired for his political beliefs, but was allowed to return after his colleagues intervened. At that time, he also attended meetings of the National Antifascist Committee, a front group for the Romanian Communist Party, which had been outlawed in the 1920s. He was arrested along with other activists in 1936 during an antifascist gathering and received a 6-month prison sentence.