When the War Labor Board first began to exert pressure on companies and unions to adopt grievance arbitration clauses during World War II, there was a considerable hesitance on both sides. Both groups worried that while third party decision making might momentarily improve productive efficiency, it would do so at the price of a long-run loss in institutional integrity and autonomy, and peace at any price held little fascination for either side. Nevertheless, grievance arbitration was accepted and gradually became the normal mechanism for resolving contractual disputes in the United States.
R. W. Fleming,
The Labor Court Idea,
Mich. L. Rev.
Available at: https://repository.law.umich.edu/mlr/vol65/iss8/2