923.

 In the interpretation and application of this chapter, the public policy of this State state is declared as follows:

Negotiation of terms and conditions of labor should result from voluntary agreement between employer and employees. Governmental authority has permitted and encouraged permits and encourages employers to organize in the corporate and other forms of capital control. In dealing with such those employers, the individual unorganized worker is helpless to exercise actual liberty of contract and to protect his or her freedom of labor, and thereby to obtain acceptable terms and conditions of employment. Therefore it is necessary that the individual workman worker have full freedom of association, self-organization, and designation of representatives of his or her own choosing, to negotiate the terms and conditions of his or her employment, and that he or she shall be free from the interference, restraint, or coercion of employers of labor, or their agents, in the designation of such those representatives or in self-organization or in other concerted activities for the purpose of collective bargaining or other mutual aid or protection.