The General Confederation of Labor (in Spanish: Confederación General del Trabajo, CGT) is a national trade union federation in Argentina founded on September 27, 1930, as the result of the merger of the USA (Unión Sindical Argentina) and the COA (Confederación Obrera Argentina) trade unions. Nearly one out of five employed – and two out of three unionized workers in Argentina – belong to the CGT, one of the largest labor federations in the world.It was founded in 1930 by socialists, communists and independents to generate a plural union central. It had a socialist majority until 1945 and Peronist since then.