Market Basket in non-union.
Some of the workers I have known or met are outright hostile to the ideas of unions. The workers really like the owner and he takes good care of them.
Excellent prices and on the weekends - forget it, it’s jammed with a billion shoppers.
Begin non-union I would imagine they get raises/bonuses based on individual and store performance, a team of co-workers who work tougher and where the dead weight is removed. They know in a Union you all get mediocre raises, can’t fire dead weight, and are forced to pay union dues.