The Post Office Retirement Fund (the Fund), established under the Posts and Telecommunications-Related Matters Act 44 of 1958, is governed by rules binding on the South African Post Office SOC Ltd (SAPO) as employer. Rule 3 of the Fund’s rules obliges SAPO to pay monthly pension contributions, including both employer and employee contributions, by the first working day of each month. SAPO failed to pay contributions from May 2020 onwards, amounting to approximately R40 million per month. SAPO admitted non-payment but contended that its dire financial position, exacerbated by COVID-19 lockdowns, justified prioritising other creditors and rendered payment impossible. The Fund sought declaratory and mandatory relief in the High Court. The High Court dismissed the application, accepting SAPO’s arguments based on constitutional obligations, prioritisation of creditors, and supervening impossibility. The Fund appealed to the Supreme Court of Appeal.