Unions bring moral character to work and the pay received for that work. They hold companies accountable and it works.

The history of labor unions is important to appreciate.  The propaganda against them is and has been hideous.  Without unions the human condition would be entenched in poverty.  'Back in the day,' as an example of the post slavery USA south, any form of industrialized company paid its workers poorly, subsistence pay and turned around and charged them for the housing they lived in and the groceries they bought. 

Pay from the company = Payment to the company for food and shelter

Nothing there about medical costs.  Nothing.  Not education either, until education became manditory for all children.

Unions don't come close to sainthood, but, they rank far higher in dignity and respect for the value of human labor than any company does.