Select all that apply Why do unions seek job rights that pertain to work assignments? (Check all that apply.) Multiple select question. There is a concern that the employer might reduce the importance of union-represented jobs by letting supervisors expand their duties. Some contracts explicitly prohibit supervisors from doing bargaining unit work such as training new employees. Management might replace higher-skilled jobs with lower-skilled, lower-paying jobs. Management might require union members to decide what to produce and establish production standards and rules of conduct