This article explores the average working hours of the average Japanese man, which is significantly higher than the OECD (Organization for Economic Co-operation and Development) average. It examines the impact of long working hours on physical and mental health, factors contributing to long working hours in Japan, how to reduce working hours, and benefits of reducing working hours for Japanese men. It also highlights potential improvements within organizations when it comes to increasing productivity levels while providing better quality leisure time outside of work each day.