Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to take legal action if an employer forces you to get a flu shot [title] Check if you belong to a union. [step] Your union contract may limit your employer's ability to force you to get a flu shot. This contract is called a " collective bargaining agreement.

Ending1: " in this agreement, you agree to pay out whatever amount of money is allowed. Without a collective bargaining agreement, your employer cannot withhold from your wages the supply of flu shots. Ending2: " you should check whether you are in a union and read any collective bargaining agreement. If your employer tries to force a flu shot requirement on you, you can bring a lawsuit in court. Ending3: " a collective bargaining agreement provides a covenant to both you and your employer that the carriers are the primary carriers of the flu. If you belong to a union, you can get a flu shot without being labeled as the primary carrier of the flu. Ending4: " you do not be legally bound by it. However, even if you belong to a union, you may be required to be a union member.

Answer format: ending1/ending2/ending3/ending4