Enacts GS 75-43 (Contract provision relating to union membership of contractor's employees is void and unenforceable), providing that any provision in any agreement or contract that requires a contractor or subcontractor to employ union members for performance of that agreement or contract is void and unenforceable as a matter of public policy, as set forth in GS 95-78.  It is also considered an unfair trade practice, under GS 75-1.1, to require a contractor or subcontractor to employ union members for performance of an agreement or contract. Provides that these provisions apply to agreements and contracts performed in North Carolina, with the exception for an agreement or contract paid, in whole or in part, with federal funds. Applies to agreements or contracts entered into on or after the date that the act becomes law.