I think the question should be: does it work?

You claim you don't expect any reward for doing your job?

What about promotions and bonuses?

I have the means and I actually do reward my kids for their school performance. If they do poorly on a test, I take it out of their allowance, and if they get over 95, they get a little bonus.

Whether it works or not, I'm not sure.

People are in fact rewarded for good grades, its just that the payment is usually deferred, and kids sometimes have a hard time understanding the long-term implications of doing well in school for their future well-being.