The UAW is the only one that can really hit them where it counts. They will shut a line down at the drop of a hat. If a supplier shuts a line down, it's an $80K/hour hit.
I've seen operators shut down lines if you look at your watch while on the floor claiming unapproved time-study activities.
Same thing has happened to Maytag in Newton, IA. Management has been particularly stupid and the UAW has offered no help.
Unions must, and will, die. And that will be a happy time.
I walked out of a meeting with a company that makes big red tractors in Racine and elsewhere that threatened to take the business we were doing with them offshore if we couldn't guarantee a 5% per year price reduction. Though the thought in the back of your mind is how you are going to make your mortgage payments, we resolved to never do business with them in the future.
We are now more profitable with better customers and I hear they are fighting line outages and quality problems.