In Service Outsourcing, unlike autonomous contracts, there is a triangular contractual relationship: service provider, worker and service recipient. The Federal Supreme Court applied the same understanding of the Action for Breach of a Fundamental Precept 324 on the validity of outsourcing, to declare valid the civil contract between a lawyer and a legal consultancy after the Labor Court recognized the existence of an employment relationship by analyzing the reality of the contract. It is difficult to use the same understanding to two legal institutes with their own different rules. The question arises: is it possible to apply the same standards for outsourcing services determined in the Action for Breach of a Fundamental Precept 324 judgment to self-employed professionals? It is important to analyze the current social context and labor relations. However, care must be taken to avoid social regression.