The purpose of this study is to understand the factors that cause outsourcing system not in accordance with the content of the work agreement regarding the term of the employment contract. Research with the title above is empirical juridical, meaning that research is based on research obtained from field studies and uses secondary data sourced from primary and secondary legal materials to analyze various regulations regarding the purpose of this research contained in Article 64 of the Law Number 13 of 2003 concerning Employment, can be referred to as the practice of outsourcing. The writer then analyzed the problematic which can be seen in several things, namely Employment Relations, Trade Unions. Employment Relations to the contract workers who work at outsourcing companies can be seen from the number of irregularities or violations of work norms carried out by employers in conducting outsourcing business. Trade Unions, where in practice are outsourcing workers, are unclear about the function and role of trade unions in the company.