Equal Pay Act NZ: 1972 Law, 2025 Amendments Explained

For decades, New Zealand women doing work society had quietly decided was “just women’s work” found their paycheques reflected that judgment. When care workers, teachers, and nurses pushed back, they triggered one of the most consequential legal battles in the country’s modern history. Now, a set of amendments signed into law in May 2025 has reshaped the ground rules for every future pay equity claim—and not everyone agrees the changes level the playing field.

Enacted Year: 1972 · Latest Amendment: 2025 · Administered By: Ministry of Business, Innovation and Employment · Key Threshold Change: Raised proof for undervalued work

What is the Equal Pay Act in NZ?

New Zealand’s Equal Pay Act 1972 was groundbreaking legislation that made it unlawful to pay men and women different wages for doing the same job. The law addressed a straightforward but persistent problem: employers who paid women less simply because of their sex, even when the work was identical. It was a response to decades of systemic undervaluation of women’s labour, rooted in the assumption that women’s wages were supplementary to a household’s main income.

The original Act focused on “same work” claims—cases where a man and a woman performed identical duties but received different pay. While this covered obvious discrimination, it left a significant gap: women in female-dominated occupations were often paid less than workers in male-dominated fields doing comparable work, even when the skills, effort, and responsibility were similar. The legislation’s scope was therefore limited in addressing the deeper structural causes of gender-based pay inequality.

History of the 1972 Act

The passage of the Equal Pay Act in 1972 reflected decades of advocacy by women’s rights organisations, unions, and Labour politicians who argued that pay equity was not merely an economic issue but a matter of basic fairness. Prior to the Act, New Zealand had no legal mechanism to challenge widespread wage discrimination against women in sectors like nursing, teaching, and clerical work—fields that were feminised precisely because they were undervalued, not because the work was easy.

The first pay-equity claim was proved in the Supreme Court by Kristine Bartlett on behalf of thousands of care and support workers. (National Party pay equity facts)

The landmark Bartlett case fundamentally changed the legal landscape. In 2017, the Supreme Court ruled that the Equal Pay Act could extend beyond same-job claims to cover systemic undervaluation of female-dominated work—a principle that opened the door to the twelve settlements reached since. The last National Government delivered the first-ever pay-equity settlement in New Zealand in direct response to that Supreme Court ruling.

Core provisions on remuneration

Under the original 1972 Act, a claimant had to show they were doing the same work as someone of the opposite sex who was paid more. The comparison was strict: jobs had to be substantially similar in terms of skills, responsibility, and conditions. This created a high bar for women in predominantly female industries where no direct male comparator existed—care workers, for instance, had no obvious male equivalent doing the same work for higher pay.

The Equal Pay Amendment Act 2020 expanded the framework to allow “pay equity” claims, which addressed the undervaluation problem rather than just direct discrimination. Rather than comparing identical jobs, claimants could argue that their work had been historically undervalued because it was women’s work—regardless of whether a male comparator performing exactly the same tasks existed. This shift was significant: it acknowledged that pay gaps could arise from occupational segregation, not just from individual acts of discrimination.

What is the new pay equity law in NZ?

The Equal Pay Amendment Act 2025 fundamentally restructured New Zealand’s pay equity framework, introducing stricter thresholds, new procedural requirements, and retrospective changes that immediately affected existing claims. The Coalition Government introduced the amendment on 6 May 2025 and passed it into law with urgency on 15 May 2025, bypassing the standard parliamentary process that typically involves public submissions, Select Committee review, and regulatory impact statements.

The Government’s rationale was that the original framework was being misused—too many claims were reaching assessment stages without genuine merit, and the system needed tighter controls to protect employers from frivolous cases. Critics argue the retrospective nature of the changes disregarded the legitimate expectations of workers and unions who had already invested years in the existing process.

2025 Amendment Act details

The 2025 amendments raised the female workforce threshold dramatically: occupations must now have at least 70% women who have worked in those roles for ten consecutive years, up from the previous requirement of 60% “at any time.” This change makes it harder for occupations with fluctuating gender ratios—or those where women have only recently become dominant—to qualify for claims.

Perhaps the most consequential change: all 33 existing pay equity claims were discontinued under the new law. Workers and unions who had spent months or years preparing claims found themselves starting over, with the added burden of meeting the new, higher threshold. The Social Service Workers pay equity claim was formally discontinued as a result, though the existing Social Workers settlement remains intact except for its review provisions.

Raised threshold for undervalued work claims

Under the new framework, unions must prove a claim has “merit” before an employer is even required to engage—previously, the “arguable” bar was lower and assessment happened collaboratively with employers. Now, employers have almost full control over key decisions and can halt a claim at any stage. To get a halted claim back on track, the union must go to court to overturn the employer’s decision.

The comparator hierarchy was also tightened. Priority is given to workers from the same employer; if no suitable comparator exists there, comparators from similar employers can be used, then within the same industry. Comparators from different industries or sectors are explicitly excluded because, according to the Government, pay differences across sectors may reflect factors other than sex-based discrimination.

What is a pay equity claim?

A pay equity claim is a formal process that argues a group of workers—predominantly women—have been systematically underpaid because their work has been historically devalued on the basis of gender. Unlike an equal pay claim (which addresses same-job discrimination), a pay equity claim can target broader disparities: the argument is that care work, clerical work, or teaching was never properly priced because society assumed women’s labour was inherently less valuable.

The claim process requires demonstrating that the work in question is female-dominated, that it has been historically undervalued, and that similar work in male-dominated sectors is paid better. Under the post-2025 rules, claimants must also identify a suitable comparator workforce and satisfy the 70% female threshold. If no suitable comparator exists within the same employer, industry, or sector, the claim cannot proceed.

How to file claims

Under the 2025 framework, the process begins with the union establishing that the claim has “merit”—a higher bar than the previous “arguable” threshold. The union must gather evidence that the work is female-dominated, that it has been historically undervalued, and that a suitable comparator exists. Importantly, the employer must agree to participate; without employer buy-in at this stage, the claim cannot advance to assessment.

If the employer agrees or a court overturns their refusal, the claim moves to assessment. At this stage, parties can agree to phase in pay increases over multiple years rather than implementing them immediately—a change that gives employers more flexibility but may delay real pay gains for workers. Review clauses allowing settlements to be reopened if the pay gap reappears are no longer enforceable; if a gap reopens, groups must raise a whole new claim and wait ten years before doing so.

Current pay equity claims NZ

Twelve settlements have been reached to date, covering care and support workers, nurses, social workers, midwives, teacher aides, and school librarians. These settlements remain valid under the new law, but their review provisions have been stripped away. If the pay gap reopens for any of these groups, they must raise an entirely new claim—and cannot do so for ten years after their existing settlement was reached.

The Social Workers settlement is not affected by the new law beyond the review provisions issue. However, the Social Service Workers claim—covering a related but distinct group—has been discontinued. With all 33 previous claims wiped clean and the new threshold in place, the pipeline of future settlements is far less certain.

What is the EEO policy in New Zealand?

Equal Employment Opportunity (EEO) policy in New Zealand refers to the broader framework of measures designed to ensure fair treatment in employment regardless of sex, race, disability, age, or other protected characteristics. Unlike the Equal Pay Act, which specifically targets pay discrimination, EEO policy covers recruitment, promotion, training, and working conditions. The two frameworks are related but distinct: EEO addresses the full employment relationship, while pay equity specifically tackles the valuation of work.

The Women.govt.nz website—now archived but historically the primary portal for gender equality policy—oversaw much of the EEO framework’s development, working alongside MBIE to ensure public sector employers met their obligations. In practice, EEO policy requires organisations to audit their employment practices, identify disparities, and take corrective action. The Equal Pay Act operates within this broader EEO context, providing the legal teeth for pay-specific claims.

EEO vs Equal Pay distinctions

The key difference is scope: Equal Pay claims address specific pay disparities, while EEO complaints can target any employment decision that disadvantages a protected group. A worker might use EEO policy to challenge a discriminatory promotion process, while the same worker—or a union representing many workers—would use the Equal Pay Act framework to argue that their occupation has been systematically underpaid relative to comparable male-dominated work.

The 2025 amendments to the Equal Pay Act do not directly change EEO policy, but they do affect the leverage available to workers in pay equity claims. By raising thresholds and tightening comparator requirements, the changes make it harder to prove undervaluation—effectively narrowing the scope of what the Act can address, even as broader EEO principles remain in place.

Role in workplaces

For employers, EEO obligations include maintaining pay transparency, conducting regular pay audits, and addressing disparities when identified. Public sector employers are held to higher reporting standards, with MBIE monitoring compliance. The 2025 amendments introduce more employer control over the pay equity process, which some argue aligns with a more collaborative approach to resolving claims—though critics contend it tilts the balance too far in employers’ favour.

How much does a woman earn for every $1 a man earns?

The gender pay gap in New Zealand has been a persistent source of concern, with women consistently earning less than men on average across all industries. Various estimates have put the gap at around 9-14% depending on how it’s measured—whether using median full-time earnings, hourly rates, or including part-time workers. However, recent verified figures are difficult to pin down without current official statistics from Stats NZ.

What the pay equity settlements demonstrate is that the gap is not always straightforward to quantify. Care workers and nurses were not simply earning 10% less than comparable male workers—they were often earning substantially less, with the difference compounded over years and decades of employment. The pay equity framework was designed precisely because the gender pay gap could not be explained by simple discrimination; it reflected structural undervaluation of women’s work that the market had never corrected.

NZ gender pay gap data

International comparisons place New Zealand’s gender pay gap in the middle range among OECD countries—better than some, worse than others. The gap is most pronounced in female-dominated sectors like healthcare, social services, and education, where average earnings are lower than in male-dominated industries like construction, finance, and engineering. This occupational segregation accounts for a significant portion of the overall gap, which is why pay equity claims focus on cross-sector comparisons rather than same-employer same-job comparisons.

Links to Equal Pay enforcement

The enforcement of pay equity claims depends on whether workers can successfully navigate the new process. With employers holding more power to halt or refuse claims, and with court challenges required to overturn refusals, the practical access to justice for lower-paid women in female-dominated sectors is now more limited. Unions, which historically led pay equity claims, face the burden of proving “merit” upfront—a significant shift from the previous collaborative model.

Timeline: Equal Pay Act NZ milestones

Three inflection points have shaped New Zealand’s pay equity landscape: the original 1972 Act that banned same-job discrimination, the 2020 amendment that opened the door to broader pay equity claims, and the 2025 amendment that dramatically tightened the framework while retrospectively ending 33 existing claims.

The passage of the 2025 Act with urgency was particularly unusual. According to International IDEA’s Global State of Democracy tracker, the Government ignored advanced warning of the bill’s introduction, regulatory impact statements, public submissions, and Select Committee review. This meant that workers, unions, and employers had minimal time to prepare for or respond to the changes before they became law.

What experts say about the amendments

The new law significantly narrows the scope for pay equity claims by restricting comparators to the same employer, industry, or sector. For occupations like early childhood education, where hundreds of small employers exist, this could create dozens of fragmented claims—or none at all if employers simply opt out.

The Coalition Government introduced the Equal Pay Amendment Act on 6 May 2025 and passed it into law with urgency on 15 May 2025, bypassing accepted democratic lawmaking processes. The Government ignored advanced warning, regulatory impact statements, public submissions, and Select Committee review.

The implication: the 2025 amendments represent a fundamental rebalancing of power in the pay equity process, shifting control to employers while raising barriers for workers. Whether this achieves the stated goal of reducing frivolous claims or simply makes legitimate claims harder to pursue will depend on how the courts interpret employer decisions to halt or refuse claims, and whether unions have the resources to mount court challenges on behalf of their members.

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