First EU-NZ FTA Climate Complaint Targets New Zealand's Tort Shield

One month after New Zealand barred climate tort claims, a Dutch NGO filed the first-ever climate complaint against a trading partner under the EU-New Zealand Free Trade Agreement. In August, Wellington amended the Climate Change Response Act 2002 (CCRA) to block tort liability for "emissions-related climate change effects". That amendment derailed the pending case of Smith v Fonterra. In September, Dutch NGO Both ENDS took the issue to the European Commission through its Single Entry Point, alleging breaches of the FTA's climate and environment obligations.

The complaint marks the first formal use of the FTA's sustainability mechanisms over a partner's climate performance. For practitioners, it opens a new front where domestic legislative reversals can trigger trade-dispute exposure.

What does the complaint allege?

Both ENDS asks the EU to place the matter before the FTA's Committee on Trade and Sustainable Development and then pursue compliance through dispute settlement under Chapter 26. New Zealand partners support the complaint. They include Mike Smith, the plaintiff in Smith v Fonterra, who says the Government "killed the case before it was heard".

The complaint maps a catalogue of alleged regressions. Each item targets a specific legislative or policy reversal.

• The tort liability shield that interfered with Smith v Fonterra.
• Weakening of the 2050 target for biogenic methane, largely from agricultural livestock.
• Removal of the requirement that the Emissions Trading Scheme (ETS) align with New Zealand's nationally determined contribution (NDC).
• Removal of a backstop that would bring agricultural emissions into the ETS absent an alternative pricing scheme.
• Reversal, under the Crown Minerals Act 1991, of the 2018 ban on offshore oil and gas exploration, plus financial support for gas production and potential importation.
• Flaws in successive NDCs: no plan to acquire internationally transferred mitigation outcomes (ITMOs) to close the abatement gap in the first NDC, and lack of progressive ambition in the second NDC due to accounting-methodology changes.

The alleged violations fall under Article 19.2.4 (non-regression) and Article 19.6.2 (effective implementation of the UNFCCC and Paris Agreement, including NDC commitments).

How does the non-regression clause work?

Article 19.2.4 states: "A Party shall not weaken or reduce the levels of protection afforded in its environmental law in order to encourage trade or investment." Three interpretive elements will confront the Commission and any panel.

First, "environmental law". Definitions in CETA (Article 24.1), CPTPP (Article 20.1) and the NZ-UK FTA (Article 22.1) cover legislation whose purpose is environmental protection. On that reading, the CCRA, the ETS and the CMA's exploration ban all qualify. The ban was enacted "in line with the country's international commitments".

Second, "weaken or reduce the levels of protection afforded". WTO jurisprudence on a party's "appropriate level of protection", including Australia – Salmon and the EU-UK Sandeel Arbitration, offers guidance. A level of protection is distinct from the measure implementing it. The word "afforded" may direct attention to how the law was applied before and after each amendment. The CCRA amendment is instructive: it overturned a Supreme Court judgment and removed the right to sue greenhouse gas emitters that the original Act left open.

Third, the intent requirement. Unlike CAFTA-DR, where the US complaint against Guatemala failed for lack of a trade-effects showing, Article 19.2.4 requires proof of an intention to encourage trade or investment, not an actual effect. New Zealand's own statements supply that evidence. The tort shield was intended to "attract overseas investment". The CMA amendment aimed to "reinvigorate investment in petroleum exploration". The Government was also advised that reversing the exploration ban would "likely be inconsistent" with non-regression obligations.

The takeaway: New Zealand's stated intentions may satisfy the clause's hardest element.

What does effective implementation demand?

Article 19.6.2 requires parties to "effectively implement" the UNFCCC and Paris Agreement. The 2025 ICJ advisory opinion supplies the benchmark: "the mere formal preparation, communication and maintenance of successive NDCs" is not enough. Parties must "exercise due diligence" and ensure NDCs are "capable of achieving the temperature goal of limiting global warming to 1.5°C above pre-industrial levels". Measures "must regulate the conduct of public and private operators" with "effective enforcement and monitoring mechanisms". The ICJ singled out fossil fuel exploration licences and subsidies as conduct that may engage State responsibility.

The fit with New Zealand is awkward. The ICJ gave no explicit guidance on agricultural emissions, which represent nearly half of New Zealand's GHG output but remain underregulated. It also did not address ITMOs under Article 6.2. Yet New Zealand's NDC depends on offshore mitigation, and the Government seemingly intends not to acquire the necessary carbon credits. An investment tribunal in Mainstream v Germany has already reaffirmed that the advisory opinion may inform climate-related disputes.

A panel report here could clarify agricultural-emissions and ITMO obligations for all Paris parties.

What is the enforcement threshold?

The high bar sits in Article 19.6.3: a party must refrain from any act or omission that "materially defeats" the Paris Agreement's object and purpose. Only then may the EU request compensation or suspend trade benefits (Article 26.16.2) or take unilateral "appropriate measures" (Article 27.4.3). Analogy with the VCLT and the ICJ's Military and Paramilitary Activities judgment suggests "materially defeat" means repudiating the treaty or violating a provision essential to its object and purpose.

Commentators suggest a refusal to communicate or achieve NDCs could cross that threshold. So might denunciation of the Paris Agreement, which some Government ministers reportedly desire. Short of that, an adverse panel finding still binds: a party "shall take any measure necessary to comply promptly with the findings and recommendations" (Article 26.13.1). The EU-Korea labour panel report preceded Korea's ratification of ILO conventions.

New Zealand has likely not crossed the materiality threshold. The claim the complaint could "cost NZ exporters billions" looks overstated.

What does this change for practitioners?

The stakes here are systemic rather than immediately financial. The complaint tests whether the Commission will act on alleged climate backsliding by an FTA partner, and it invites a panel to interpret non-regression and implementation clauses with real consequences. Prime Minister Christopher Luxon put the standard himself: "If you want to uphold the rules-based system, you have to respect the rules-based system."

For trade and environmental lawyers, the case signals that sustainability chapters carry live litigation risk. Legislative reversals with investment-attraction rationales now sit squarely within FTA enforcement machinery. The likely remedies are reputational and compliance-driven, not billions in suspended trade. But the abiding result could strengthen credible commitments, a level playing field, and access to environmental justice at both ends of the planet.