Hashomer Hatzair
Between 1939 and 1944 he was secretary of the Histadrut's security committee. From 1946 until 1948 he served as an emissary of Hashomer Hatzair and the Histadrut in the United States. After his return to Israel, he served as secretary of Hashomer Hatzair-Kibbutz Artzi from 1950 until 1955.