The Agricultural Research Council (ARC) sued four former employees to recover amounts they received as increased pension gratuities upon termination of their membership of the Agricultural Research Council Pension Fund. The increases were paid pursuant to a decision of the ARC’s Executive Management Committee (EMC) taken on 23 May 1997, purportedly in terms of Rule 7.17 of the Fund’s rules, to compensate members for income tax payable on gratuities. The ARC paid substantial sums to the Fund, which then paid increased gratuities to the respondents. The ARC later contended that the payments were unauthorised, ultra vires, and that the respondents had been unjustly enriched. It alleged that, in law, the payments should be regarded as payments by the ARC to the respondents, recoverable under the condictio indebiti or condictio sine causa. The court a quo dismissed the ARC’s claim, leading to this appeal.