Tehran University of Medical Sciences International Journal of Occupational Hygiene 2008-5109 13 4 2021 12 30 278 287 Khalil Taherzadeh Chenani Department of Occupational Health Engineering, School of Public Health, Occupational Health Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran Reza Jafari Nodoushan Department of Occupational Health Engineering, School of Public Health, Occupational Health Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran Mohammad Ali Ghoveh Nodoushan Department of Health, safety and Environmental Management, School of Public Health, Shahid Sadoughi University of Medical sciences, Yazd, Iran Fahimeh Boghri Department of Health and Environmental Management (HSE), School of Public Health, Occupational Health Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran Farzan Madadizadeh Research Center of Prevention and Epidemiology of Non-Communicable Disease, Department of Biostatistics and Epidemiology, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran 2021 05 24 2021 09 28 Safety programs are among the effective factors that may have a key role in upgrading workforce productivity and promotion of qualitative and quantitative indicators of production. The aim of this study was to investigate the effect of integrated management systems (IMS) establishment on safety performance improvement. This study was a retrospective study conducted at the Mazrouf Glass factory in Yazd, Iran. To investigate the effect of IMS establishment on the safety performance during the studied years, indices of injury frequency rate (IFR), injury severity rate (ISR), frequency-severity index (FSI), and Safety T. Score (S.T.S) were used. The paired-samples t-test was used to compare safety indices before and after the establishment of the IMS. The results showed that the establishment of IMS had a meaningful effect on the reduction of the IFR and ISR. Also, no meaningful effect was found between IMS establishment and FSI and S.T.S. IMS establishment could reduce the IFR and ISR, which in turn may promote productivity indicators. Eventually, it could be concluded that IMS establishment can be used as an effective proceeding to improve workplace safety indices. https://ijoh.tums.ac.ir/index.php/ijoh/article/view/518 https://ijoh.tums.ac.ir/index.php/ijoh/article/download/518/783