At one company I worked at for 3 years I found out the new hires that I was training were making 15% more than me. HR refused to adjust my pay because “the pay of your peers has no relation to your pay rate”. So I spent a couple weeks finding a new job while documenting nothing I was working on, then took two weeks off and then handed in my two weeks once that was approved.

Fuck corporate

With all the back pay they deserved, surely.