The New Zealand Pork Industry Board v The Director-General of the Ministry of Agriculture and Forestry

The New Zealand Pork Industry Board sought leave to appeal against the decision of the Court of Appeal, which dismissed their appeal against the Director-General of the Ministry of Agriculture and Forestry. The dispute centred on the interpretation and application of sections 22 and 22A of the Biosecurity Act 1993, in relation to the control and eradication of classical swine fever in New Zealand. The Pork Industry Board argued that the Court of Appeal had erred in its interpretation of the statutory provisions and in its assessment of the Director-General’s exercise of discretion.

The legal issues before the Supreme Court were twofold. Firstly, whether the Court of Appeal's interpretation of sections 22 and 22A of the Biosecurity Act 1993 was correct. Secondly, whether the Director-General had correctly applied the requirements of these sections following the report of the Independent Review Panel. The Pork Industry Board contended that the Court of Appeal had misconstrued the statutory language and had not given proper deference to the Director-General’s discretion in making decisions regarding the management of the disease outbreak.

The Supreme Court, in granting leave to appeal, found merit in the Pork Industry Board’s contentions. The Court observed that the Court of Appeal had indeed misinterpreted the statutory provisions and had failed to appropriately consider the Director-General's exercise of discretion. The Supreme Court held that the statutory language should be interpreted in a manner that reflects the intent of the legislation to provide a robust framework for disease control while also considering the proportionality and necessity of the measures implemented. The Court further noted that the Director-General’s decisions, while subject to judicial review, must be given deference unless they are shown to be manifestly unreasonable.

The final orders of the Supreme Court were that leave to appeal was granted, and the approved grounds of appeal were those outlined in the judgment. The matter was remitted to the Court of Appeal for reconsideration in light of the Supreme Court’s directions.