Good Faith and Insurance Contracts
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CHAPTER 18
Evidence: Proving a breach of duty or a defence
The onus of proof
18.01 The assured must satisfy the court or tribunal that is hearing his claim that he has suffered a loss that falls within the cover afforded by the terms of the policy of insurance. The assured need not prove that he has complied with the duty of the utmost good faith, whether it concern the pre-contractual duty of fair presentation of the risk or the presentation of a claim. The burden of proving the breach of such a duty, whether it be a non-disclosure,1 a misrepresentation2 or a fraudulent claim,3 lies on the insurer. ThisPage 678
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The standard of proof
18.09 The standard of proof applicable in cases of the breach of the duty of the utmost good faith, or any defence thereto (such as affirmation), is the satisfaction of the court or tribunal that the case has been established on the balance of probabilities.41 The probability to be proved, however, will increase in the case of an allegation of fraud or, where fraud has been established, an allegation that the fraud failed to induce the insurer.42 It is sometimes said that the standard of proof in cases of fraud will approach the criminal standard of proof beyond a reasonable doubt.43 This serves merely as a comparison. The reality is that the civil standard of probabilities remains applicable, but the likelihood of an assured having been fraudulent is such,44 and the danger of injury to his reputation,45Page 683
Means of proof
Expert evidence
18.10 Materiality is defined in the context of the duty of full disclosure by reference to the wish of a prudent underwriter to consider the circumstance in question in order to decide if it might affect his decision to underwrite the risk on any particular terms. This is a question of fact,49 and introduces an element of objectivity that is assessed by the standard of reasonableness. Reasonableness may be determined by the court or tribunal seised of jurisdiction applying its own sense of the attitude of a prudent underwriter,Page 684
“In this case no expert insurance evidence has been called. Each side had permission to adduce expert evidence in the field of life insurance but neither side exercised that right. Materiality is thus left to me as the trier of fact unaided (nor impeded) by expert evidence on the subject.”