[3] In 1935, United Mine Workers president John L. Lewis formed a "more militant"[6] group within the American Federation of Labor (AFL) called the Committee for Industrial Organizations.

They announced the committee's creation on November 9, 1935,[7] and in 1938, after the AFL revoked the charters of these members, they formed the Congress for Industrial Organizations (CIO).

[1][3] In 1950, Zaritsky retired after 39 years as a labor union official, succeeded by Alex Rose, also a co-founder of the ALP and Liberal Party.

[1] Zaritsky was a Labor Zionist[3][4] and served as treasurer of the National Labor Committee for Palestine[2] as well as the National Committee for a Leon Blum Colony in Palestine[4] (whose patrons included Herbert H. Lehman, Fiorello H. LaGuardia, Abraham Cahan, Albert Einstein, Felix Frankfurter, Israel Goldstein, Julian W. Mack, Edward F. McGrady, and Robert F. Wagner and whose officers included Rose Schneiderman and Lucy Lang[11]).

[12] At his death in 1959, The New York Times declared, "Although his union had only 40,000 members, Mr. Zaritsky won a position of major influence in labor's affairs.