My daddy is a recently retired union rep up north. He represented a bunch of factories, plants, teachers unions etc. He also was a member of the electoral college and campaigned for Hilary Clinton and the President Obama.
Me being in management of a non-unionized business, we've had some lively debates on the subject. He has had some horror stories of employees he had to represent even though they didn't deserve it.
Historically - more pros than cons but now it's probably the opposite in many cases. 4951