contract change notification

例句：

1. 1.The company issued a contract change notification to all employees last week.
   公司上周向所有员工发出了合同变更通知。
2. 2. The new policy requires us to provide a contract change notification before any changes are made.
   新的政策要求我们在任何变更之前提供一份合同变更通知。
3. 3.The contractor was notified of the contract change by email the day after the agreement was signed.
   协议签订后的第二天，承包商通过电子邮件收到了合同变更通知。