The defense of the interests of professional categories is the object of the study, which is presented by observing the procedural aspects of filing a public civil action, in particular, by the scope of adequate representation. there are several lawful parties, and the scope of the rule has been expanded so that the various members of civil society and union movements can act together with the government in the preservation, maintenance and recovery of violated social rights, a position consolidated from the analysis of the jurisprudence of the Brazilian Courts.