[por] Destina, no ano em que a CLT comemora 80 anos de vigência, a examinar as diversas fases da negociação coletiva no Brasil ao longo da história. São realizadas diversas considerações sobre os vários momentos que foram atravessados, desde a escravidão até os instantes em que se discute negociado e legislado, e o papel das entidades sindicais, inclusive sua receita e as centrais sindicais.[eng] This article aims, in the year in which the CLT celebrates its 80th anniversary, to examine the different phases of collective bargaining in Brazil throughout history. Several considerations are made about the various moments that were crossed, from slavery to the moments in which negotiated and legislated are discussed, and the role of union entities, including their revenue and the union centrals.