Abstract
Workplace stress is a significant risk for individuals in high-stress jobs. Identifying valid and reliable tools to measure conditions related to workplace stress is essential for targeted interventions. This study aimed to determine the psychometric properties of the revised and Iranian version of the Health & Safety Executive Management Standards Indicator Tool (MSIT-IR). The item pool was created based on the Health & Safety Executive Management Standards Indicator Tool (HSE-MSIT) and findings from a qualitative study. After face and content validity, the psychometric properties of the Indicator Tool were examined. Cronbach's alpha, McDonald's omega, and the intra-class correlation coefficient were calculated to assess reliability. A total of 220 health care workers from 80 primary health care centers completed the MSIT-IR. In exploratory factor analysis, 35 items were loaded, which indicated a 9-factor solution for the questionnaire: Superior support, Demands, Job control, Social support, Changes, Relationships, and three new factors, including Non-job factors, Cognitive structure, and Individual context. Cronbach's alpha (0.949), MacDonald Omega (from 0.739 to 0.894), and intra-class correlation coefficient (0.92) were acceptable. Overall, the results show that the MSIT-IR is reliable and valid. In other words, MSIT-IR can be useful for identifying organizational, social, and individual factors related to workplace stress and implementing targeted interventions. However, further evaluation of MSIT-IR is recommended.