The report, the eighth one mandated by the 2014 law on karōshi prevention measures, delves into the amount of sleep both self-employed and corporate workers are getting and how that affects workers' health. Research has shown that, when the gap between the amount of sleep people want and the amount they get is bigger than two hours a day, it leads to a range of health issues, including daytime sleepiness, difficulty concentrating and digestive and intestinal disorders, not to mention mental disorders such as depression and anxiety.

Source: https://www.japantimes.co.jp