Executive Hotel (Private) Limited v Edward Donald Bennett (In his capacity as the Executor of the Estate of the late Robert Courtney Irwin)

The late Robert Courtney Irwin was an 88-year-old director and majority shareholder of Barwin Holdings (Pvt) Ltd, owning 59,999 of 90,000 Class A voting shares. Barwin Holdings owned property known as the Executive Hotel, valued at $17 million and insured for $11 million, plus liquid assets of $1.2 million. On 18 January 2000, Irwin signed an Agreement of Sale on behalf of Barwin Holdings selling the entire shareholding (150,000 shares) to the Executive Hotel for $2 million. At the time of signing, Irwin was blind, wheelchair-bound, required 24-hour nursing care, had suffered two strokes, had impaired speech, and could not dress, feed or bathe himself. His doctor stated he exhibited symptoms of Parkinson's disease and alternated between clarity and mental confusion due to medication. On the day of signing, a business associate (Weedman) visited Irwin and found him unable to follow conversation, nodding off, and believing he was on an aircraft wanting to disembark. She left without concluding business as she believed he was incapable of making proper decisions. Irwin died two months later on 14 March 2000. The executor of his estate sought to set aside the Agreement on grounds of lack of mental capacity and common mistake (Irwin only owned 59,999 shares, not all 150,000 shares).

• Whether the court a quo was correct in determining the matter on the papers without hearing oral evidence and resolving disputed facts in favour of the respondent
• Whether the late Irwin had the requisite mental capacity (corpus mentis) to enter into the Agreement of Sale
• What constitutes lack of mental capacity to contract
• Whether the Agreement of Sale was void ab initio by reason of mutual/common mistake regarding ownership of shares

The appeal was dismissed with costs. The Agreement of Sale was set aside on the grounds that the late Robert Courtney Irwin lacked the mental capacity to enter into the contract.

A contract entered into by a person lacking mental capacity (corpus mentis) is void ab initio. Mental capacity requires that a person: (1) be capable of estimating what is or is not a fair and beneficial bargain; (2) have a state of mind such that common honesty would make him liable for the act or contract; and (3) be capable of understanding and appreciating the transaction into which he purports to enter. Whether a person had requisite mental capacity is a question of fact to be determined by the court based on all the circumstances, including medical evidence, the conduct of the person, the nature of the transaction, and surrounding circumstances. Courts may resolve disputes of fact on affidavits without oral evidence where taking a robust approach would not risk injustice, particularly where expert medical evidence is uncontroverted and the probabilities strongly favor one party's version.

The Court observed that elementary prudence and common honesty should have prompted the purchaser and its legal practitioner to ensure that a blind 88-year-old man in apparent poor health, asking a ridiculously low price, was assisted by his own legal practitioner or someone managing his business affairs. The Court noted that the purchaser's failure to appreciate this represented a serious lapse of judgment and that Squires and Levy were "the authors of the misfortune of the appellant" as "they should have known better." The Court also commented that while the first test for mental capacity (inability to weigh up a bargain) may be too lenient as it is consistent with mere stupidity, which is insufficient to void a contract, the test remains useful alongside the other established tests. The Court did not need to determine the alternative ground that the contract was void for common mistake regarding the merx (the shares being sold), as the finding of lack of capacity was sufficient to dispose of the appeal.

This Zimbabwean Supreme Court case is significant for establishing comprehensive principles for determining mental capacity to contract in circumstances involving elderly persons with medical conditions. It affirms that mental capacity is a question of fact for the court to determine, not merely a medical opinion. The judgment provides clear guidance on when courts can resolve factual disputes on affidavits using a robust approach, particularly where expert medical evidence is uncontroverted. It emphasizes the protective policy of contract law toward persons lacking mental capacity, even at the expense of other contracting parties. The case illustrates that conduct and circumstances surrounding a contract (such as grossly inadequate consideration, confusion about material facts, failure to implement obligations, and undue haste by the other party) can provide strong evidence of lack of capacity. It also addresses the ethical duties of parties dealing with elderly or infirm persons to ensure they have independent advice and assistance.