What is 'Uberrimae Fidei Contract'

An uberrimae fidei contract is a legal agreement requiring the highest standard good faith. "Uberrimae fidei" or "uberrima fides" is Latin for "utmost good faith." Insurance contracts are the most common type of a uberrimae fidei contract. Because the insurance company agrees to share the risk of loss with the policyholder, it is imperative that the policyholder act in good faith by fully disclosing all information that affects the insurance company's level of risk. Full disclosure allows the insurer to protect itself by charging the policyholder a premium that accurately reflects the level of risk it is undertaking or even refusing to issue a policy if the risk is too high.

BREAKING DOWN 'Uberrimae Fidei Contract'

Because the insurance applicant often has more information about the risk that is being insured against than the insurer does, the principle of uberrimae fidei is used in an attempt to eliminate moral hazard. For example, someone applying for health insurance knows more about their eating habits, exercise patterns, family medical history and personal medical history than the potential insurer does. In order to determine how risky the applicant is, the insurer requires him or her to honestly answer a medical questionnaire and submit to a review of medical records before being approved for a policy. If the policyholder is later found to not have acted in utmost good faith at the time of application, his policy and benefits can be rescinded.

History and Role of Uberrimae Fidei

The principles of Uberrimae Fidei were first expressed by Britain's Lord Mansfield in the case of Carter v Boehm (1766). He said, "Insurance is a contract of speculation... The special facts, upon which the contingent chance is to be computed, lie most commonly in the knowledge of the insured only. The underwriter trusts to his representation, and proceeds upon confidence that he does not keep back any circumstances in his knowledge, to mislead the underwriter into a belief that the circumstance does not exist... Good faith forbids either party by concealing what he privately knows, to draw the other into a bargain from his ignorance of that fact, and his believing the contrary."

Uberrimae fidei is seen as the foundation of a reinsurance contract. In order to make reinsurance affordable, a reinsurer cannot duplicate costly processes, such as insurer underwriting and claim handling costs. They must rely on the primary insurer’s ability to complete these tasks adequately. In return, a reinsurer must appropriately investigate and reimburse an insurer’s good faith claim payments.

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