en Occuptional Health Occuptional Health پژوهشي Original Article <table align="left" border="1" cellpadding="0" cellspacing="0"> <tbody> <tr> <td style="width:457px;"><strong>Background & Aims of the Study:</strong> &nbsp;Occupational stress is one of the most common problems that can occur in any occupational population and can cause problems for the individual mental health.&nbsp; Therefore, the present study aims to investigate the relation between occupational stress and psychological distress in Isfahan&rsquo;s steel employees.<br> <strong>Materials & Methods:</strong> This cross-sectional study was conducted in 2014 among 3063 of Isfahan&rsquo;s Steel employees.<br> GHQ-12 questionnaire was used to assess psychological distress and ERI-23 questionnaire was used to determine occupational stress. Data analysis was performed using quantile regression method in R software (quantreg package).<br> <strong>Results:</strong> The results of the study showed that 2803 (91.5%) of the participants were men and the rest were women. Due to the use of quantile regressions in this study, it is not possible to report results in all deciles, however, Effort, reward and overcommitment in all deciles had a significant relationship with psychological distress(p<0.05). High scores of rewards and effort, and low scores of overcommitment were associated with high scores of psychological distress.<br> <strong>Conclusions:</strong> The results showed that if high effort is accompanied by high overcommitment in the workplace, in case of low reward, it can be considered as a risk factor for psychological distress.</td> </tr> </tbody> </table> Effort, Reward, Overcommitment, psychological distress, occupational stress 80 87 http://jhygiene.muq.ac.ir/browse.php?a_code=A-10-181-1&slc_lang=en&sid=1 Abbas Khodaeimehr عباس خدایی مهر abbaskhd666@gmail.com 0000-0001-8377-7058 Yes Department of Biostatistics and epidemiology, school of health, Isfahan university of medical science, Isfahan, Iran کارشناسی ارشد آمار زیستی، گروه آمار زیستی و اپیدمیولوژی و کمیته تحقیقات دانشجویی دانشکده بهداشت دانشگاه علوم پزشکی اصفهان Hamid Roohafza حمید روح افزا 0000-0003-2803-4555 No b- Associate Professor of Cardiac Rehabilitation Center, Cardiovascular Research Center and Psychiatric Research Center of Isfahan University of Medical Sciences, Isfahan, Iran روانپزشک.دانشیار مرکز تحقیقات بازتوانی قلبی، پژوهشکده قلب و عروق و مرکز تحقیقات روان تنی دانشگاه علوم پزشکی اصفهان Awat Feizi awat_feizi@hotmail.com 0000-0002-1930-0340 No Associate Professor of Department of Biostatistics and epidemiology, school of health, Isfahan university of medical science, Isfahan, Iran Parisa Pournazari p-pournazari93@gmail.com 0000-0001-9540-6983 No Department of Biostatistics and Epidemiology, School of Health, Isfahan University of Medical Science