My BCTGM is a good Union in respect to finding mutual benefit in contracts for good Employers, while my sons Teamsters Representation follows the same profit structure as Corporations not for the Employees benefit. (My son was a Rep in Chicago but went back to repairing the rails, because the lawyers were there only to build their resumes to cross over to become Corporate Lawyers and just giving "boilerplate" answers to Employee grievances.)
It needs to be stated that the Laws restrict both parties in a framework of to whom responsibility belongs where Union members can go to the Labor Board if the Union is collaborating with Employers...