A waiver of liability is an agreement that many people try to use to protect themselves from personal injury cases; they have everyone that they deal with sign the agreement, giving up the right to sue in the event of injuries. These waivers, also called releases, are quite common, often used by recreation or entertainment facilities, such as ski slopes, bicycle and skate rental shops, bungee jump parks, and amusement parks.

Some sports, such as bungee jumping, have been declared by courts to be inherently dangerous. If this is the case, all participants are said to have voluntarily waived the right to sue and recover money in the event of an injury; this is because it is common knowledge that the sport is dangerous and may cause injury and the risk of this is a necessary part of participating.

Furthermore, even without a waiver, the assumption of risk has been used to protect the owners of ballparks and golf courses from lawsuits on the part of injured parties struck by stray balls. The court determines that by going to the ballpark or golf course, the person is assuming the risk that he or she might be struck by a ball.