I hate unions, but I've noticed they only form when there's some sort of abuse. Treat employees well, and this isn't a problem. Also, flip the hierarchy: a business that puts employees first and profits for owners last can often have a shit ton of profits for owners. Executing isn't easy and requires wisdom and work - but that's why owners are paid the big bucks. If owners can't hack it... Then it's a skill issue. Ge…
Why do you hate them, when you recognize that they are general the result of abuse? I'll cop to unions not always being great; the rules can be counterproductive, or sometimes limiting, but they are up to the union members, so at the end of the day there is some kind of reason for them.
And the second paragraph - barring ESOP or employee-owned co-ops a union is pretty much the only game in town other than crossing your fingers and hoping the company owners, or board, or stock market are capable of pulling their head out of their ass. this can be a big lift.