Such people advertise for a product lending their names or images to promote a product or service. Advertisers and clients hope such approval, or endorsement by a celebrity, will influence buyers favourably.

A signature is an endorsement. For example, when an employer issues a payroll check, it authorizes or endorses the transfer of money from the business account to the employee. The act of signing the check is considered an endorsement, which serves as proof of the payer's intent to transfer funds to the payee.

An endorsement in life insurance policy refers to additions as rider, or other additions, changes, deletions etc. Endorsement acts like a tailpiece for your existing insurance policy. When an endorsement is made, the policy will include the changes that have been asked for.

Celebrity endorsement is one of the most popularly used types of endorsements, as celebrities typically have a wide reach in the public audience.

Some common endorsements are rental reimbursement, roadside assistance, GAP coverage, full glass coverage, accident forgiveness, and rideshare insurance. Some less common endorsements are antique or classic car coverage, exclusion endorsements, pet insurance, modified car coverage, and commercial use coverage.

Endorsements can be broadly classified into two, financial and non-financial. Financial endorsements are those which affect the premium, whereas non-financial endorsements are those which do not affect the premium amount.