W. Va. Code § 21-5G-3: Contracting for exclusion from employment because of affiliation or nonaffiliation with a labor organization.

Any agreement, contract, understanding or practice, either written or oral, implied or expressed, between any labor organization and an employer or public body which provides for the exclusion from employment of any person because of membership in, affiliation with, resignation from, or refusal to join or affiliate with any labor organization or employee organization of any kind is hereby declared to be unlawful, null and void, and of no legal effect.