Nothing in this article [30-21-1 to 30-21-5 NMSA 1978] shall be construed to impair, curtail or destroy the lawful rights of employees and their representatives to self-organization, or [to] form, join or assist labor organizations, to bargain collectively through representatives of their own choosing and to engage in concerted activities for the purpose of collective bargaining or other mutual aid or protection.
NMS § 30-21-2