The general message of two recently-performed studies is that we spend far too much time at work, but the authors move beyond merely complaining and measure the downside not only to workers, but to business as well. "Extreme jobs" is the phrase coined by the Hidden Brain Drain Task Force of the Center for Work-Life Policy. As defined by the group, you have an extreme job if you work 60 hours or more a week and meet at least 5 additional characteristics from a list of 10. These "extreme workers" may be damaging not only themselves, but their children, and more importantly, their boss' bottom line.
See "The Workplace: Two studies into life/work balance find 'extreme' workers can hurt the bottom line", Lisa Belkin, International Herald Tribune, December 10, 2006