Every year in Japan, approximately 300 workers are killed due to work-related accidents at construction sites. Approximately 40% of the accidents are caused by falls from heights. Therefore, Japan's Ministry of Health, Labour and Welfare has introduced and strictly enforced countermeasures with various safety guidelines to prevent fall-related accidents. In this study, the features of two typical guidelines are introduced including an evaluation of the human factor and the effects on the prevention of fall-related accidents. Based on the results of the evaluation, it was found that fatal accidents at construction sites were reduced following the "Guidelines for the Methods to Erect Scaffolds First." However, another guideline, the "Guidelines for the Methods to Erect Handrails First for the Scaffolds Erection" did not significantly reduce accidents because of a low usage rate.
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