N.D. Cent. Code § 34-09-06
Any contract entered into between the employer and a labor union must be executed on behalf of the employer in the employer's true name and signed by the employer, or in case of a corporation by the proper officers authorized by law and the bylaws of the corporation to execute valid and binding contracts on behalf of the corporation, or in the case of a limited liability company by the proper managers authorized by law and the bylaws of the limited liability company to execute valid and binding contracts on behalf of the limited liability company, and any contract under this section must be executed on behalf of the labor union in the name of the labor union by the president, the secretary, or other duly authorized officer of the labor union. A contract under this section is equally binding as to all of the contract's terms and conditions against both the employer and the labor union.
N.D.C.C. § 34-09-06