The specifics of a union contract will vary from one worksite, or employer, to the next, but generally includes provisions on:
The contract spells out the rights and responsibilities of both management and members and is comprehensively written so both sides know what is expected.
Enforcing the agreement is union business. So, it is important that members alert their shop stewards or business agents if they believe a contract violation has occurred. Keep in mind that management cannot legally change the contract language without negotiating with the union.
Please check with your business agent for information about the contract for your workplace.