In the current literacy we observe a growing speech showing the importance of the employees to the organizations. As a consequence, organizations have been implementing policies and practices with the aim to increase employee´s commitment and productivity. Among these practices we identify the Performance Management System. The present study intends to investigate the influences of Performance Management System in individual commitments towards the established goals and the organizations itself. Analyzing the questionnaires handed out to individuals working in different organizations, the present study concluded that commitment level´s variation are more visible when the employee has the perception that Performance Management System offers him some kind of return, like an opportunity to develop their careers, greater information´s availability or a chance to acquire more autonomy to make decisions. In addition of increasing the influence over goals commitments, these practices also ascend over normative commitment (towards the goals and the organizations as well) and, in a minor scale, over an affective commitment towards the organization.