UK Guardian:
http://money.guardian.co.uk/work/story/0,1456,1552801,00.html
This week, an American survey concluded that long working hours increased an individual's chances of illness and injury. It noted that for those doing 12 hours a day, there was a 37% increase in risk compared to those working fewer hours.
...
The American study, published in the Journal of Occupational and Environmental Medicine, points out that overtime and extended work schedules are associated with an increased risk of hypertension, cardiovascular disease, fatigue, stress, depression, musculoskeletal disorders, chronic infections, diabetes and other general health complaints. In Japan, most karoshi victims succumb to brain aneurisms, strokes and heart attack.
Professor Cary Cooper, a stress expert at Lancaster University Management School, says the risk is not just confined to those who work more than 60 hours but hits those that put in more than 45.
"If you work consistently long hours, over 45 a week every week, it will damage your health, physically and psychologically. In the UK we have the second-longest working hours in the developed world, just behind the States and we now have longer hours than Japan," he says.
So the US has the longest working hours in the world? Something else that makes us number one.