According to the Black`s Law Dictionary3, the term “waiver” has been defined as a voluntary waiver or the abandonment of a benefit or right. It is an act of handing over benefits or privileges. The waiver of the right requires prior knowledge of an existing right by the person requesting a waiver of that right. A person must be fully aware of his or her rights before relinquishing these rights4. There can therefore be no waiver unless the person who has declared that he has renounced the right with full knowledge of that right renounces the same thing.5 Any delay, omission, leniency or leniency of any of the parties in the exercise of any of the rights or non-compliance by a party in this agreement cannot be construed as a waiver of that right and must not infringe that right on future occasions. Since then, Waiver`s doctrine has evolved considerably, leading to an investigation into the waiver of contract rights, while setting limits to such an extension of the exercise of waiver of the law. If someone accidentally refuses to accept a shipment of goods based on thought, it is something else, it is not necessarily a renunciation because, while the rejection was voluntary, it was not as intentional. A person may waive his right in many respects, including the waiver by Estoppel or Wahl6. The Supreme Court has ruled that a waiver of a right receives its core estoppel and, therefore, there will be no waiver if there is no Estoppel7. In ramdev Food Products Case8, when considering the doctrine of waiver of the right to oppose a trademark violation, the Supreme Court found that if a person changed his or her position on the performance of his or her obligations, he could not, once amended, return to his or her previous legal relationship. In the case of Insurance Corp.
of Ireland/. Guinee Bauxites Company, 456 U.S. 694 (1982) the United States Supreme Court held that, when a court orders a party to present evidence on a specific point, that party refuses to comply with the Court`s injunction to give the court that refusal as a waiver of the right to challenge that point and assumes that the evidence would show what the opposing party claims. In some cases, the parties may sign a “non-waiver contract” stipulating that no rights will be promulgated, especially when a person`s actions indicate that there are no rights. This is particularly common in insurance. Sometimes the elements of “voluntary” and “known” are defined by legal fiction. In this case, it is considered that one knows his rights and that those rights are voluntarily abandoned if they are not invoked at that time. In U.S. states such as California, renunciation is not legal if it violates an explicit provision of the law, its implicit policy or good character.
 In addition, responsibility cannot be given for violations of rights, intentional violations of one person or property of another, fraud or tenant rights.   An important thing to consider when setting up an event that would pose a risk to clients is the acceptance of a risk waiver.