I would just think this imaginary guy is an idiot. Unless he's working for himself but I don't think that's what you're talking about. You'd be pretty stupid to effectively work for free, or do you assume that this overtime gets paid? In any case, if the guy has no life and is happy to work all day that's just fine by me, I wouldn't care at all. And if he gets paid for that, that's great, he deserves it if he really works that hard and actually delivers quality results (which I doubt). You talk as if it would be a competition on who can work the most hours. I don't think it is.

Edit: If it's the money you're after I think you should try to work smarter not harder :-) i.e. if you're only way to get more money is to work more hours maybe you should find another job or change career.