Criticim Republic of Indonesia Law Number 13 of 2003 concerning Manpower is often the spotlight of labor activists. The "outsourcing" employment contract system for plantation workers is seen as a practice of fragmentation, degradative, discriminatory and exploitative effects on workers. Researchers on Nias migrant workers in Pelalawan Riau HTI plantations are interpretations of the meaning of the assumption of labor exploitation with a qualitative method approach. Results of research on Nias migrant workers in HTI found that the application of the outsourcing system is one form of labor exploitation. The level of education and openness to initial information when in the recruitment process does not work properly. Workers are "locked up" by agents through power structures that influence each other in dominant and subordinate power. Model debt and payroll system it does not bring prosperity, instead, workers are trapped in a cycle of poverty and exploitative. The head of the group (kepala rombongan) (KR) as a “wild agent" and the contractor of the company providing labor actually became an exploitative agent. The dream of workers getting social security, THR, and welfare is gone when they see the situation they are treated like a slave. Finally, Nias migrant workers can only come out if they struggle through resistance and are assisted by "hands" of observers engaged in the struggle for labor advocacy.