Canadian Union of Postal Workers was created in 1965.
American Postal Workers Union was created on 1971-07-01.
Canadian Union of Skilled Workers was created in 1999.
Universal Postal Union was created on 1874-10-09.
Workers' Union was created in 1898.
Canadian Geophysical Union was created in 1974.
Bulgarian Workers Union was created in 1935.
Antigua Workers' Union was created in 1967.
Union of Djibouti Workers was created in 1992.
Christian Workers' Union was created in 1963.
National Union of Workers was created in 1989.
Union of Russian Workers was created in 1908.
Workers' Union of Ireland was created in 1924.