Explainer: Would New Zealand trading partners really retaliate? What the evidence says

Over 60% of pork sold in New Zealand comes from countries still using sow stalls - a practice banned here since 2016. Over 80% of New Zealanders support applying the same welfare standards to imports. And international trade law provides a clear legal pathway to do exactly that.

So why hasn't it happened? The most commonly cited worry is fear of trade retaliation. Our analysis, drawing on trade data, legal frameworks, and historical precedent across multiple jurisdictions, finds this risk is extremely low - and in some cases, effectively non-existent.

This policy is legal under international trade rules

Before examining retaliation risk, it's worth establishing that the policy itself rests on firm legal ground. Under GATT Article XX, WTO rules explicitly allow countries to restrict imports on public morals grounds, provided the standards are applied consistently to both domestic and imported products. 

New Zealand has already established its public morals position through domestic legislation - banning sow stalls following public outcry and a decade-long transition, and banning battery cages following similar demand. Independent legal advice confirmed that extending these standards to imports is consistent with WTO rules and New Zealand's free trade agreement obligations.

Two forms of potential retaliation

Retaliation could theoretically take two forms: trading partners imposing welfare-based counter-requirements on New Zealand exports, or trading partners imposing retaliatory tariffs. Neither are likely after a closer examination.

1. Welfare-based counter-requirements: affected trading partners lack the legal basis to act

For a country to place welfare requirements on imports under international trade law, it must meet two criteria: it must demonstrate a public morals case established through domestic legislation and public opinion, and it must apply those standards consistently to all domestic and imported products.

Some stakeholders have suggested trading partners could retaliate by targeting New Zealand practices such as intensive winter grazing or inadequate shelter provision or the treatment of bobby calves. These are legitimate welfare concerns in their own right. However, they do not translate into a credible basis for trade retaliation.

Take New Zealand’s trading partners Canada, the US, Australia and China as an example. These countries currently lack the higher domestic welfare standards that would be required to impose equivalent requirements on imports. And even if a country like Canada were to legislate against winter grazing for example, and apply those standards to imports, it would be legally required to apply them uniformly on all of their trading partners - to the US, Australia, Uruguay, Mexico and Brazil as well. 

New Zealand accounts for just 0.22% of Canada's total pork production, 0.07% of the US's, and 0.14% of Spain's. For any of these countries, the impacted trade value is negligible relative to the diplomatic and economic cost of mounting a retaliatory response.

The European Union theoretically presents a more complex picture. Some member states have higher shelter standards, and the EU has, in theory, greater capacity for coordinated action. However, any EU-level response would require agreement across member states - and many EU members are already transitioning away from sow stalls and farrowing crates. Those countries would likely benefit from a New Zealand imports policy, as it levels the playing field with lower-welfare exporters within the bloc. Internal opposition from countries like the Netherlands, Germany and Denmark would likely limit appetite for punitive measures.

2. Retaliatory tariffs: limited legal scope, significant economic cost

Tariff retaliation faces its own constraints. Under WTO rules, tariffs must comply with Most-Favoured Nation principles and remain within agreed bound rates. There is no recognised exception that would justify retaliatory tariffs in direct response to a welfare-based import standard.

The economic incentives also work against retaliation. Modelling consistently shows that tariffs generate costs for the country imposing them - through reduced domestic output, productivity losses and employment effects. The short-term political signal would likely be outweighed by meaningful economic self-harm, particularly given New Zealand's small share of any major exporter's total production.

A note on the current US trade environment

Some have raised concerns about unpredictable trade behaviour from the United States under the current administration. It's worth noting that recent US tariff actions have been driven by broad geopolitical considerations - not by responses to regulatory measures from small trading partners. New Zealand represents just 0.07% of US pork production and is its 18th export destination by volume. More importantly, the US itself has already established the legal precedent for welfare-based import standards through California's Proposition 12, upheld by the US Supreme Court in 2023. A policy that mirrors an approach already operating within the US would be a difficult basis for any targeted trade response.

3. What has actually happened when other countries have done this

Perhaps the most direct test of retaliation risk is what has actually happened when comparable policies have been enacted elsewhere. Several welfare-based import measures have not faced WTO dispute challenges or triggered retaliatory trade measures, including:

• The EU Slaughter Regulation

• California's Proposition 12

• EU cosmetics animal testing bans

• Import bans on foie gras and fur products across multiple jurisdictions

An analysis of these cases found no statistically significant effect on export volumes to affected trading partners following implementation. Trade growth trends remained consistent with broader global patterns both before and after policy enactment.

California's Proposition 12 is particularly relevant. Despite producing less than 1% of the pork it consumes, California successfully enforced welfare-based import standards requiring compliance from out-of-state and international producers. The US Supreme Court upheld the law in 2023. Major producers including Smithfield, Tyson Foods and JBS have all confirmed capacity to supply compliant products - suggesting that when market signals are clear, supply chains adapt.

​​Exporters can comply - but aren't yet

Major exporters already produce welfare-compliant pork at scale. Poland produces 570 times more sow stall-free pork than needed for its New Zealand exports. Germany, 251 times. The US, 176 times. Spain, 94 times.

But without a clear import standard, there is no incentive to direct compliant products to the New Zealand market. Right now, exporters send us what's cheapest - because we let them. The policy changes that calculation. It sends a market signal that New Zealand expects the same standards it applies to its own producers, giving exporters a reason to supply their higher-welfare product and giving New Zealand farmers a fairer market to compete in.

What New Zealand could stand to gain

Retaliation risk does not exist in isolation - it needs to be weighed against what the policy delivers.

First and foremost, it delivers consistency and aligns with what the public expects when it comes to opposing certain practices. New Zealanders have already made their position clear - through the domestic legislation that banned sow stalls and battery cages, and through polling that consistently shows over 80% support for applying those same standards to imports. This policy doesn't create new expectations. It meets existing ones.

It also levels the playing field for domestic producers, who currently bear the cost of higher standards while competing against imports that don't have to meet them. Economic modelling suggests the policy could increase domestic pork industry output by $17.2 to $29.0 million through enhanced market share, as the hidden cost advantages of lower-welfare imports are removed.

There are also reputational considerations - New Zealand's standing as a higher-welfare producer has, according to the Ministry for Primary Industries, helped secure international market access, and this policy would reinforce that positioning at a time when global consumer preferences are shifting.

The bottom line

The conditions that typically produce trade retaliation - significant market disruption, legally vulnerable policy design, isolated diplomatic action - are largely absent here. New Zealand's market share is negligible for affected exporters, the legal framework under GATT Article XX is well-established, comparable policies have been implemented elsewhere without consequence.

The question is not whether New Zealand can afford to act. It's whether it can afford not to.

For the full analysis of retaliation risk, supply chain feasibility and price implications, read our report Vision into Action: Applying Animal Welfare Standards in Import Policy. All underlying data is available here.