"Union" does not automatically mean "everyone doing job X gets $Y/hr, no matter what." Many unions allow for performance-based pay increases. Furthermore, if y

"Union" does not automatically mean "everyone doing job X gets $Y/hr, no matter what." Many unions allow for performance-based pay increases. Furthermore, if you're actually doing better (in a situation like you describe, it should be trivial to prove this), it is likely that the union would help you negotiate a better performance-based pay increase than you would be able to negotiate on your own.