Aren't unions overwhelmingly the driving force behind senority-based pay? Honest question. Like, I think teacher's unions are strongly against pay-for-performance.
I don’t want seniority based pay. I want value based pay.
If I join a company and day one I’m the top performer I’d want to negotiate a better package for myself and I don’t want other people meddling in my negotiation unless I explicitly hire them to
At the exon 101 level, that sounds much more like a job for insurance, savings, or gov’t. (There are generally much lower deadweight losses from transfers compared to keeping people working jobs that are no longer economically net positive.) The better pro-union arguments I know are about balancing negotiating leverage due to many fewer employers than workers.