Sloth vs. Greed?

Eduardo raises an intriguing question about the lack of "traction" in our culture for arguments that cast the dangers of working too hard in moral terms.  What about the vice of greed, or avarice, as the counterpart to sloth?  Surely greed could be understood more broadly than simply the desire for material wealth or gain;  wouldn't it also encompass the desire for power or admiration or control or SSRN downloads that motivates people to voluntarily work far more than the balance of obligations in most people's lives would naturally dictate?   I'd propose to add a pinch or two of "pride" and "idolatry" to the notion of greed.  What might we call that?

Lisa