Money is a terrible motivator? lol. What's this nonsense? Give me your name and address, I'll write you a check for $1500 free and clear to take back what you just said.
And for the record, nobody paid me to write that comment in the first place.
http://www.econtalk.org/archives/2010/08/daniel_pink_on.html
Money's a great motivator until you're near your threshold earnings, and then other things start slipping in, like, for instance, the ability to make a point. Then, of course, is the discussion about why anyone wants money...and the fact that there's more direct ways to affect the value in someone's life. Hate to sound the sociopath, but money doesn't stack up against a family.
That's why a hell of a lot of people are working - if they don't work, their family would get to go live in a box on the sidewalk. That's another way of saying that workers are motivated by money, for a sizable fraction of workers.