According to the textbook, two elements of the legal definition of unions that are essential components are: Unions must have a set of bylaws that included an international union overseeing it and unions must be endorsed by at least 100 members Unions must have as one of their purposes, a commitment to bargain in good faith and unions must be dependent of the employer Unions must have, as one of their purposes, collective bargaining with the firm and unions must be independent of the employer Unions must have as one of their purposes, a commitment to bargain in good faith and unions must be independent of the employer