Macro-ergonomics and human ability indices at work: Assessment of job groups and workers by using of Relative Stress Index (RSI) and Work Ability Index (WAI)

Introduction: To reduce occupational accidents and workrelated diseases as well as improving satisfaction of working conditions, Assessment to identify risks and control measures are necessary. The aim of this study, applying ergonomic assessment indices to assessed the job groups and ability of textile workers. Materials and methods: This study was conducted on 194 men employed in the QaemBaft textile company. Relative Stress Index (RSI) was used to assess the textile job groups. Also Work Ability Index (WAI) was used to assess the personnelrsquo s ability. Results: Results of RSI for 15 job groups showed that all jobs were in the Safe zone. Also results of WAI showed that only ldquo Open ldquo job was to have good level of ability and other job groups were to have intermediate level of ability. Conclusion: According to the results, Relative Stress Index (RSI) is a tool for macroergonomics assessment of job risks. Also, in six categories of tasks of RSI, levels of fitness is determined. But WAI, Ability to work is determined that is a wider earning than the fitness.