What proof do you need to be a domestic partner on someone's health insurance?

Answer 1

This is determined by the employer who is paying the premiums for coverage. If there is a local domestic partnership registry available, then the requirement is usually a certificate of registration of domestic partnership. Otherwise, the requirement can be merely a notarized affidavit of domestic partnership in a format prescribed by the employer. Assuming the policy that has been purchased by the employer offers domestic partner coverage, then the insurance company will provide coverage to anyone that the employer says is the worker's domestic partner. The insurance company will then charge the employer more for that worker's coverage.