The origin of the court was the National Labor Council, created in 1923, which was a part of the executive branch, subordinated to the Ministry of Agriculture, Industry and Commerce. On 18 September 1946, the council was transformed into the
Tribunal Superior do Trabalho. The
Brazilian Constitution adopted that year recognized the TST as part of the judiciary branch, no longer subordinated to the executive. That status was retained by all subsequent constitutions. Since its origins, the court was integrated by both effective Ministers and temporary class Ministers. The effective Ministers (nicknamed "togados" after the distinctive
robes - "togas" - which they wear) were considered
magistrates for all legal prerogatives, while the Temporary Classist Ministers ("classistas"), paritary representatives of both employers and employees ("classes"), were appointed for a fixed term (usually three years) and had fewer powers and prerogatives. The classist ministers were abolished by a
constitutional amendment in 1999, leaving only the effective ministers. ==Composition==