>work at a grocery store for a few years
>go over and above fairly often, get along with most
>get trained for supervision, as in handling all employees in my department, fielding angry customers, and keeping an eye on the store/helping where needed
>going fine, really enjoying it despite the stress
>suddenly find out I'm not getting a raise from my already-low wages by doing supervision, said no raise will come besides our yearly raise, and I'll get a cashier's raise ($.30)
Now, I make $.50 more than the cashiers due to working a cash office position too, but am I justified in being pissed? Supervision is stressful as hell, and frankly I feel used.
Should I just start looking for another job? Is it even worthwhile to make an ultimatum like "Unless I get supervisor pay for my supervision shifts, I won't do them" ? Any advice for handling it, or why I should/shouldn't be upset?
Yes you can do better
You sound young (less than 25 y/o) OP. I was once like you and believed that doing more responsibility would make more money, but it should always be opposite.
I got taken advantage of by my managers for doing the schedule for them, and other various paperwork ordeals. I also volunteered to do on call stuff for weekends as well. I thought there would be a senior level opening that the company once had, and I did what I could to work my way into it.
The position never opened due to budget cuts, and no one got raises that year.
So I was getting paid the same as my colleagues but all the responsibility and bitching of schedule conflicts was being doled out to me.
Don't be like the past me. If management wants you to do extra things, then explain to them you will only if you are compensated appropriately.