There's a lot of people out there who do enjoy doing their work. I believe it would be possible to build a reward system into a robot that would leave it capable of creativity and yet still be willing to work itself in all kinds of conditions that a human laborer would not.
Remember, the robot doesn't have to be as all-around perceptive as we are - all it has to have is enough intellectual capacity to do the job at hand, and follow orders. Anything above and beyond that is wasted, and hence will be ignored.
And that scares the shit out of me, because that is where "emergent behavior" is going to come back and bite us in the ass. Rise of the machines, indeed.