The Definition of "Reward"

I asked a manager why the company stopped giving raises to employees who changed their employment status from Part-Time to Full-Time. She told me that it was because there was no change in job description and it was just a change in availability and therefore didn't require an income increase. I was recently "promoted" to a position that gave me more responsibilities but no raise. I asked her why there wasn't a raise for that promotion. She told me that the position was a "reward" for doing such a great job. So my "reward" is having to do more stuff for the same amount of pay.

This is why I Work 2 Rant.