W. Va. Code § 21-5G-6: Exceptions.

This article does not apply:

(1) To any employee or employer covered by the federal Railway Labor Act, 45 U. S. C. §151, et seq.;

(2) To any employee of the United States or a wholly owned corporation of the United States;

(3) To any employee who is employed on property over which the United States government has exclusive jurisdiction for purposes of labor relations; or

(4) Where the provisions of this article would otherwise conflict with, or be preempted by, federal law.