Background and Objective: The aim of the present study was to investigate the effect of workplace ergonomics on the job satisfaction of employed administrative staffs in projects of Iranian Gas Engineering and Development Company.
Materials and Methods: The present descriptive-correlational study was conducted through survey research  method. The statistical population of this practical study consisted of all the staff members of Iranian Gas Engineering and Development Company in Tehran. A total of 430 people ere selected, 205 of whom were selected according to Cochran formula. The data were collected using the Minnesota Satisfaction Questionnaire and a researcher-made questionnaire for measuring workplace ergonomics. Moreover, the collected data were analysed through descriptive and inferential statistics (analysis of the correlation and regression between the two variables), using SPSS 24 software.
Results: The findings of the study showed that the path coefficient between ergonomics variable and job satisfaction variable was 0.46 (P<0.001). Furthermore, the variable of ergonomics  explains 21% of variance of job satisfaction.
Conclusion: Regression between ergonomics and job satisfaction was positively significant. Moreover, Pearson correlation coefficient between these two variables was moderate and significant.