Section 7: "Employees shall have the right to self-organization, to form, join, or assist labor organizations to bargain collectively through representation of their own choosing, and to engage in other concerted activities for the purpose of collective bargaining . . ."
Section 8 (a): "It shall be an unfair labor practice for an employer. . . to interfere with, restrain, or coerce employees in the exercise of the rights guaranteed in Section 7 . . ."