And it's quite hard to do that. Companies tend not to want to negotiate with a union and have a separate compensation structure for non-union employees in the s

And it's quite hard to do that. Companies tend not to want to negotiate with a union and have a separate compensation structure for non-union employees in the same job families. It's hard to have or benefit from one set of working conditions for union members and one for non-members. IMO, both employees and employers should be free to form what groups they please and negotiate what contracts they will. This includes contracts that forbid an employer from hiring non-union workers. But there should also be no law mandating such a provision. Of course subject to government regulation that supersedes contracts (health and safety, human rights provisions, others).