What planet are you living on? GM almost went out of business because the United auto-workers drove up input costs to the point that they could make no profits. Not small profits. NO PROFITS.
Counterpoint: Volkswagen in Germany has an organized labor rate of about 98%, workers have 32hour work weeks and 6 weeks (IIRC) of holiday per year. And half of the seats in the board of advisories are represantatives of the workers*. Yet, they are quite profitable.
* = Thats German law for public companies.
edit: typo.