It's more like "negotiating", I think "demanding" would get me fired or put in unfavorable position even though I'm a valuable and respected employee, I doubt "demanding" would get me far. I'd just end up antagonizing some people in the management who are friendly and more likely to be receptive to "negotiations" and friendly reasoning
I get along much better here by being nice and friendly with people. I guess, one more advantage of my job: not working for bloodsuckers.