The Agricultural Research Council (appellant) was established under the Agricultural Research Council Act 86 of 1990 and established a pension fund (the Fund) for its employees. The four respondents were former employees who became members of the Fund. During 1997-1998, when their membership terminated, each respondent exercised options under rule 7.4 of the Fund rules to receive gratuities. The appellant paid additional amounts to the Fund under rule 7.17 to compensate for income tax payable on the gratuities. These payments (ranging from R265,635.55 to R1,189,898.25) were made following a decision by the Executive Management Committee (EMC) on 23 May 1997 to extend the gratuity increase benefit. The Fund then paid increased gratuities to the respondents. The appellant later sought to recover these amounts, contending the payments were unauthorized and made without proper delegation of authority from the Council to the EMC, and that the payments constituted unjust enrichment of the respondents.