Similar questions have been asked, but none seem to be exactly what I'm looking for.
I'm looking to move into management or similar in the relatively near future. My current position does not include any real supervisory responsibilities, but the next step involves a bit of a leap in that regard.
A past employer took advantage of me for taking on additional responsibilities to prove myself: after successfully performing them for several months, I inquired about an open position I wanted to move into. I was flat out told that they were not going to pay me more to keep doing what I already was doing, even though the open position paid more with just a minor increase in total responsibility.
In my present job I'm at that point again where I want to ask for some things to prove I'm ready for that next step, but I am not sure how to find the balance of proving myself vs being taken advantage of. All new tasks I've taken on that have been slightly outside the description have now become just another part of my responsibilities. I only have so much capacity (all of the "normal" duties plus everything I've added), but don't want to stay at this level, either.
My thought is to try to find "one-off" projects I could do, but most of those in this field repeat at some point....and thus far, that repeat has just become my duty, not something "new" I had taken on.
I could use some advice on how to draw that line BEFORE I feel like I'm being taken advantage of...while still proving that I am worthy of the promotion!