it all fine and dandy to do more than what's required until that extra that you do becomes the expectation and you get no benefit from it. the pressure to continue doing that extra is worse if you have nothing to show for it in your pockets.

companies have budgets in mind, so they can only give so many people the good money. most folks out here sweating too much for companies don't usually end up with the title/raise from it. they just keep taking advantage of you.