An endorsement can have several meanings, but most of them have to do with the concept of approval or authorization. It can refer to a signature authorizing the legal transfer of a negotiable instrument between parties, an amendment to a contract or document, or a public declaration of support for a person, product, or service. In the context of advertising, an endorsement is a form of advertising that uses famous personalities or celebrities to promote a product or service. This type of endorsement is often used to leverage the recognition, trust, and respect that the endorser commands
. In the insurance industry, an endorsement, also known as a rider, is an amendment to an existing insurance contract that changes the terms of the original policy. It can add, delete, exclude, or change insurance coverage, and can be used to increase standard limits of coverage and take precedent over the original agreement or policy
