The policy of economic practices to private section has been widely developing in two past decades all over the world. Outsourcing public industries to private section, autonomy of manufacturing firms, decentralization of manufacturing units, and revolution of economic management system in Iran are prevalent issues in economic discussions. Outsourcing as a privatization method has been replacing public service and product development. For this purpose, privatization of west Azerbaijan Telecommunication Department as an important economic section was chosen as the subject of this paper to investigate job satisfaction of its stuff and its impacts on the performance of the department. One main and 5 subsidiary hypotheses were set and a questionnaire was designed to test them. Measuring validity and consistency of the questionnaires, they were distributed among sample population. Using Cochran formulation, 290 people were selected from the sample. Collecting questionnaires, their results were classified and a correlational T-test was used to analyze data. Due to the results, 5 factors of job satisfaction according to Stephan Robins impacted the performance of west Azerbaijan Telecommunication Department.