During the first five years of its existence, the Jewish Labor Committee concentrated mainly on supporting anti-Nazi labor forces in Europe and sending relief to Jewish labor institutions there, especially those maintained by the Jewish Labor and the "left" Labor Zionist movement (the "right" Labor Zionists organized their own relief and rehabilitation committee), and encouraging and strengthening U.S. and Canadian opposition to the Nazis, in the labor and democratic left, as well as in the community-at-large. At the same time it organized mass anti-Nazi demonstrations; in 1936, with the American Jewish Congress, through the Joint Boycott Council, it conducted a boycott on German goods and services.