The dissertation here presented here brings the result of a study on the paths taken by the labor unions on the flexibilization of rights. It has as general goals the examining were the main factors that allowed the approval of Law 13.467/2017 - entitled Labor Reform - in the National Congress without great combativeness on the part of Brazilian unionism. In order to carry out this study, we used research instruments such as bibliographic research, started in the research project, search for recent works on the subject in the platforms, in the data banks, repositories of theses and dissertations, labor law, and documents related to the theme. The information collected and analyzed on the trajectory of the Labor Reform and its consequences for the unions revealed that the combative practices of such organizations had been changing since the early 1990s until; finally, they were coopted by the PT government in the early 2000s. It is clear, therefore, that the differences between CUT and Força Sindical - the two main Union Labor Centers today - are reduced, as the first becomes a central government and the second has difficulties to exercise the role of opposition. The survey showed, therefore, that the accommodation of the unions before the neoliberal strategies of the government is not so recent and that the path followed by them already pointed in favor of the approval of a labor and union reform, which began gradually and subtly in the government Lula, ending up in Law 13.467 / 2017.