A release gives up a right, such as releasing one from his/her liability for harm or damage that may occur from performing under a contract, or participating in an activity. A release acts as some assurance to the person requesting the release that he/she will not be subjected to litigation resulting from the person giving the release. The term waiver is sometimes used to refer a document that is signed before any damages actually occur. A release is sometimes used to refer a document that is executed after an injury has occurred.