The pervasive pre-emption doctrine which the Supreme Court has applied to federal labor relations legislation has, in the opinion of Professor Smith and Mr. Clark, largely derogated state authority in this area. In arguing that such an approach represents unsound policy, the authors recommend an alternative, based on the basic principles of the federal legislation, which would give additional jurisdiction to the states. They also point out extensive areas which remain subject to state authority and, because substantial developments are taking place at the state level, urge the states to exploit their opportunities to provide the nation with experience with varying policies.