This happened late last year. I used to work at an independent pharmacy as a pharmacy tech. In my contract, I was supposed to get $15/hr to start and then after three months it would become $16/hr (with no benefits at all).
Three months passed and so I asked her for my raise. She dropped everything that she was doing and in front of everyone (co-workers and customers) she started yelling at me.
She said things like “you're not even good enough for what you're being paid now” or “if you want that raise then you're going to have to work harder” and more bs like that. I should've quit right then and there but I really needed a job so I had no choice.
Come next paycheck I see that she did give me the raise. I guess she realized that since it was in the contract she couldn't avoid giving it.
Before I left I told my co-workers how much I was getting paid and it turns out that I was getting the most money out of everyone. I only hope they used that information to their advantage. Also it's not like the pharmacy was broke, the manager bought a new Mercedes a couple months after I started working there.