It’s guaranteed. Once signed and agreed to, management cannot change the contract without negotiating with the union first, so you know you’re protected.
Understanding your contract, and the power behind it, helps prepare you for whatever comes next. Should you have any questions or concerns regarding your contract, or a possible violation of it by management, you have a team behind you to help you get what’s fair and what’s right.
Contact your Shop Steward or Agent for guidance and support.