1. 2) Labour Standards Bureau, the Ministry of Health, Labour and Welfare (2004) Rodo Eisei no Jittai (The fact of industrial health). In: Rodo Eisei no Shiori (General Guidebook on Industrial Health). 345, Japan Industrial Safety and Health Association, Tokyo.
2. 3) The Japan Institute for Labour Policy and Training (2003) Rodo Jikan Tou no Doko (The movement of working time). In: White paper on the Labour Economic. eds. by The Ministry of Health, Labour and Welfare, 191-202, Gyousei, Tokyo (in Japanese).
3. 4) Labour Standards Bureau, the Ministry of Health, Labour and Welfare (2002) Announcement of a Comprehensive Program for the Prevention of Health Impairment Due to Overwork, 2002 (available at Website of the Japanese International Center for Occupational Safety and Health, http://www.jicosh.gr.jp/english/guideline/OverworkMeasures.html).
4. Effect of Overtime Work on 24-Hour Ambulatory Blood Pressure