Commissioner of the Australian Federal Police (on behalf of the Commonwealth) v Police Federation of Australia (Australian Federal Police Association Branch)

The Federal Circuit and Family Court of Australia was presented with a dispute between the Commissioner of the Australian Federal Police, on behalf of the Commonwealth, and the Police Federation of Australia (AFP Branch). The Federation and six AFP officers alleged that the Commissioner failed to pay the officers in accordance with their respective Base Salary as required by the Australian Federal Police Enterprise Agreement 2017–2020 (EA). They sought declaratory relief, orders for compensation (with interest), pecuniary penalties, and a mandatory injunction requiring the Commissioner to adjust the officers' superannuation entitlements. The Commissioner denied liability, arguing that the officers' eligibility for the Base Salary increases was contingent on their satisfactory completion of the Performance Development Agreement (PDA) process.

The central legal issue in this case was the interpretation of section 63 of the EA. The dispute centred on whether the annual Base Salary increases were subject to the condition of satisfactory completion of the PDA process, as stated in section 63(3) of the EA. The primary judge ruled in favour of the applicants, stating that the officers were eligible for the Base Salary increases regardless of their PDA status. The Commissioner appealed this decision, arguing that the primary judge erred in his interpretation and in his consideration of extrinsic evidence.

The appeal court found that the primary judge had misdirected himself in his interpretation of section 63. The court held that the plain language of section 63(3) made the officers' eligibility for Base Salary increases conditional on their satisfactory completion of the PDA process. The court also found that the primary judge erred in excluding the extrinsic evidence provided by the Commissioner, which showed that the Commissioner's interpretation of the EA was consistent with his understanding of the former EA and was likely a common understanding between the parties. The court concluded that the primary judge should have considered this evidence in interpreting the ambiguous language of section 63.

The appeal was dismissed, and the matter was remitted to the Federal Circuit and Family Court of Australia for further proceedings. The court rectified a typographical error in the primary judge's question and ordered that "ineligible" replace "eligible". The court made no order as to costs, as neither party had sought costs in the event of success.