Assumption of risk means a plaintiff willingly engaged in the activity that harmed them despite knowing there was a potential risk of harm to them. A defendant's assertion of an assumption of the risk defense alleges that he or she never owed the plaintiff a duty of care to begin with.Document the participant's assumption of risk, waiver of rights, and release of claims if an accident or injury arises. Bluestone Wake Park Liability Waiver. Assumption of Risk is exactly what it sounds like – a complete written statement in a waiver describing all the risks involved in the activity or procedure. Call us at 208.232.6101. How to fill out the Assumption of Risk Waiver and Release Agreement? 1. Read through the entire document carefully. 2.