Lappeman Diamond Cutting Works (Pty) Ltd v MIB Group (Pty) Ltd and Another

Lappeman Diamond Cutting Works (the appellant) carried on a diamond cutting and polishing business. In 1984, through specialist insurance broker Stewart Wrightson (later MIB Group, the respondents), it obtained a specie insurance policy from underwriters containing clause (b) in the "Specific Conditions" requiring the insured to "keep detailed records of all sales, purchases and other transactions" available for inspection in case of claims. In 1989/1990, diamonds were stolen from the appellant's Pietersburg premises. When claims were made, the underwriters rejected them on the basis that the appellant had failed to keep full records as required by clause (b), which was found to be a promissory warranty. The appellant's action against the underwriters was dismissed in November 1993. The appellant then sued the insurance broker (MIB Group) for damages, alleging the broker breached its duty by failing to draw attention to clause (b), explain its implications, and familiarize itself with the appellant's business practices. The appellant's managing director, Roger Lappeman, testified that the diamond trade commonly engaged in "off-the-book" transactions where records were not kept to preserve confidentiality, and that the brokers should have known this and warned him. The brokers' representatives (Sanders, Martin, and Holmes) all testified they had discussed the record-keeping requirement with Lappeman. On 6 March 1991, the underwriters' attorney formally rejected the claims, citing failure to prove loss, while reserving rights regarding breach of policy terms.

• What is the nature and extent of a specialist insurance broker's duty to advise a client about onerous terms in an insurance policy, particularly promissory warranties?
• Did the specialist insurance broker breach its duty by failing to specifically enquire whether the insured engaged in 'off-the-book' transactions common in the diamond trade?
• When did the appellant's cause of action arise for purposes of prescription?
• Had the claim prescribed under the Prescription Act 68 of 1969?

Both the appeal and cross-appeal were dismissed with costs, including costs for two counsel. The appellant's claim against the insurance broker failed on the merits (no breach of duty established), but would not have been barred by prescription had it succeeded on the merits.

A specialist insurance broker's duty to exercise reasonable care and skill includes a duty to draw the insured's attention to unusual, limiting or exempting provisions in a policy (such as promissory warranties) and to explain their implications. However, once the broker has fully apprised the insured of obligations under the policy, the broker has discharged this duty and has no further obligation to enquire whether the insured actually complies with those obligations. The broker does not control the insured's business and cannot be expected to ensure compliance; it is the insured's sole responsibility to comply with policy terms once properly informed of them. For purposes of prescription under the Prescription Act 68 of 1969, a debt arising from an insurance broker's alleged breach of duty does not accrue until the insured's claim is formally rejected by the underwriter on grounds that relate to the alleged breach, such that the insured knows or ought reasonably to know of the facts giving rise to the claim against the broker.

The Court acknowledged that a specialist broker must demonstrate greater skill and knowledge than an ordinary broker, just as a specialist doctor must show greater skill than a general practitioner (citing Van Wyk v Lewis 1924 AD 438 and Durr v ABSA Bank Ltd 1997 (3) SA 448 (SCA)). The Court noted the principle from English law (adopted in Lenaerts v JSN Motors (Pty) Ltd 2001 (4) SA 1100 (W)) that a broker's duty to exercise reasonable care extends to taking reasonable steps to elicit and convey material information both from and to the insured, including information about terms which, if contravened, might leave the insured without cover. However, the Court emphasized that "the precise extent of the insurance intermediary's duties must depend in the last resort on the circumstances of the particular case, including the particular instructions which he has received from his client" (quoting Harvest Trucking Co Ltd v P B Davis [1991] 2 Lloyd's Rep 638). The Court also observed, without deciding the point definitively, that even if there had been evidence that off-the-book transactions were common in the diamond trade and known to specialist brokers, this would not necessarily impose a duty to enquire about such practices once the record-keeping obligation had been explained. The judgment contains factual observations about practices in the diamond trade, including "off-the-book" transactions and illegal "schlepping" of diamonds, though the Court found the evidence on these practices lacked clarity and precision.

This case is significant in South African insurance law for clarifying the scope of a specialist insurance broker's duty to advise clients. It establishes important limits on the broker's responsibilities: while brokers must draw attention to and explain onerous policy terms (particularly promissory warranties), they need not enquire into whether clients actually comply with those terms once properly advised. The judgment balances the higher standard expected of specialist brokers with practical limitations on their role, emphasizing that brokers are not responsible for controlling or supervising the insured's business operations. The case also addresses when a debt arises for prescription purposes in the context of insurance claim rejections, holding that formal rejection on specific grounds is necessary before the cause of action crystallizes. The decision reinforces the principle that sophisticated commercial parties bear responsibility for understanding and complying with their contractual obligations once those obligations have been properly explained.