It shall be unlawful for any person, firm, association, corporation or labor organization to enter into any understanding, contract, or agreement, whether written or oral, to exclude from employment members of a labor union, organization or association, or persons who do not belong to, or who refuse to join, a labor union, organization or association, or because of resignation or withdrawal therefrom.
Iowa Code § 731.3
Contracts to exclude unlawful
[C50, 54, 58, 62, 66, 71, 73, 75, 77, §736A.3; C79, 81, §731.3]
Official source: Iowa Legislature. Reproduced from public-domain Iowa statutes; confirm against the official source for the current text. Not legal advice.