RESUMEN
In Japan, the Industrial Safety and Health Law requires an employer to implement medical interviews for employees working long hours. The law stipulates the criteria of the targeted workers as those whose working time exceeds the legal limit of working hours, those with accumulated fatigue, and those who desire to receive an interview from a physician. Therefore, the employers should make an appropriate system to identify the workers who require a medical interview among employees working long hours with increasing health risks. In this study, we used "The Action Checklist for health risk management of employees working long hours (ACL)" and evaluated its efficacy. We conducted two studies: a seminar study, using ACL as an educational material in the seminar targeting occupational health professionals, and an interventional study, distributing materials with ACL in one group of small-scale enterprises and not in another group. In the seminar study, we observed a greater number of practical answers to the problems hypothetically set in the seminar among the occupational health professionals who used ACL. The results of a questionnaire given after the seminar revealed ACL was favorably accepted among 80% of all the participants in the seminar as "I have fully understood the usage of ACL" and "ACL seems to be useful in my workplace". In the interventional study, we could not see positive results from the distribution of ACL, possibly because of the low response rate, short interventional term or distribution without individual explanation. Further investigation and efforts should be considered to widely diffuse ACL with individual explanations, to prevent health disorders caused or aggravated by working long hours.