A policy that sets a maximum validity period for a signed waiver, after which the guest must sign again before participating in a covered activity. Waiver expiration policies help operators ensure that liability language stays current (especially after legal updates), that repeat guests are re-informed of risks, and that waivers reflect the guest's current health status for medical disclosure activities. Digital waiver systems can automate expiration tracking and prompt re-signing during the booking or check-in flow, reducing staff burden and preventing expired waivers from being accepted at the point of experience.