Human resources play a crucial role in the evolution of the organizations, and huge organizational developments caused by unlimited intellectual capacity of human resources. Therefore, of the priorities of any organization is to preserve these valuable resources. In this regard, an appropriate alternative is to improve the quality of work life in organizations. To this aim, the quality of work life was investigated among the staff employed in General Department of Human Resources of Municipality of Tehran (the study population was included of 3 types of employments one official and two contractual employments), during 2017- 2019. The research method is descriptive-survey and the data were collected using the Walton work quality of life questionnaire (1973) and a researcher-made questionnaire on demographic characteristics. Data were analyzed using SPSS software and statistical Tests including frequency, mean and standard deviation, and inferential statistical test including one-way T, Pearson correlation and analysis of F variance. The results indicated that the status of quality of work life in the studied area is 3.03 and above mean from the staff point of view. Also, the mean scores of life quality amongst Hadianshahr (one of the tow contractual employments) were lower than official (fixed) staffs and Khadamate Edearie Shahr (one of the two contractual type of employments). In terms of demographic variables, an adverse relationship was observed between quality of work life and age.