Gary Kremen, 43, founder of Match.com, reportedly puts in 60- to 80-hour work-weeks "because, he said, he does not think he has nearly enough money to ease up."
Some people I know (they shall remain anonymous so the Proletariat Politburo Police don't pounce on them and because their initials may, just may, resemble your humble narrator's) barely clock 40 hours per workweek; maybe 45 hours max.
Mr. K (Kremen, not Kokonuts) is "worth" an estimated 10 million smackers.
Go figure.
(Photo is from eyemage at flickr.com.)