ACC, the deal that swapped lawsuits for cover

New Zealand made a trade almost nobody else has: give up the right to sue over an injury, and in return everyone hurt by accident gets covered, no fault to prove, no court to win. The scheme that honours that trade is ACC, running since 1974 and currently governed by the Accident Compensation Act 2001.

What it is

The Accident Compensation Corporation provides 24/7, no-fault personal injury cover to everyone in New Zealand, citizens, residents, workers, students, retirees and visitors too. If you're injured by accident in this country, ACC is the first port for treatment costs and lost income, whoever caused it, Accident Compensation Act 2001.

The other half of the bargain: you generally cannot sue for personal injury in New Zealand. Negligence claims for damages are barred, cover comes automatically instead of by verdict. Exemplary damages, criminal prosecution and non-injury disputes survive, but the ambulance-chasing industry that exists elsewhere simply has no product here.

What it covers

Accidents, the broken-leg kind, at work, on the road, at home, on the field. Injuries count as work-related, motor-vehicle, or neither, the label decides which levy account pays, not whether you're covered.
Treatment injury, harm caused by treatment itself: a surgical error, a missed diagnosis consequence. Covered as its own category since 2005, replacing the old "medical misadventure" wording.
Gradual process, work-caused conditions that accumulate, like occupational disease or deafness, when the job is the cause.
What it doesn't cover, illness. Cancer, infection, most wear-and-tear and mental health without an accident behind it belong to the health system, the accident/illness line is the scheme's oldest boundary dispute and the reason a "no" letter sometimes argues about cause rather than fact.

What it pays

Treatment, contributions toward GP visits, physio, surgery and hospital care. "Contribution" is honest: ACC often pays a set portion rather than the whole bill, which is why a surcharge exists at many clinics.
Weekly compensation, up to 80% of pre-injury earnings when you can't work. For a work injury the employer covers the first week; ACC picks up after. The rate caps out at a legislated maximum.
Rehabilitation, vocational and social rehab to get you back to work or independence, plus home and vehicle modifications for serious injury.
Lump-sum compensation, a one-off payment for permanent impairment, assessed by percentage.
Fatal injury, funeral grants, survivor's grants and weekly payments to dependants, ACC, weekly compensation.

Where the money comes from

ACC is funded like insurance, through levies into five accounts, which is why the scheme's costs show up in payslips and rego bills:

Earners' Account, non-work injuries to earners, paid by the earners' levy inside PAYE deductions.
Work Account, work injuries, paid by employer levies (risk-rated by industry) and self-employed levies.
Motor Vehicle Account, road injuries, paid through the petrol levy and the licensing fee inside every vehicle registration.
Non-Earners' Account, injuries to children, students, beneficiaries and retirees, funded by government appropriation, general taxation.
Treatment Injury Account, funded out of the earners' and non-earners' accounts.

Levy rates are set every three years by regulation, the argument over whether the accounts are "fully funded" is a standing piece of Wellington weather.

When ACC says no

A declined claim isn't the end, it's the start of a defined ladder: ask ACC for a review (a fresh decision by an independent reviewer), then appeal to the District Court, which hears ACC cases with specialist assessors. The cover line, accident versus illness, work versus non-work, is where most fights live.

In Christchurch

This city has felt both sides of the bargain. Every injury on the crash record is an ACC claim in waiting, the Motor Vehicle Account is part of why your rego costs what it does. And after the February 2011 earthquake, the physical injuries and many of the mental injuries tied to the disaster ran through the scheme, one reason the city never saw an American-style litigation wave over quake injuries.

The boundary fights show up locally too: whether quake-era mental harm counts as "personal injury caused by accident" has been argued through the courts, the accident/illness line again, on Christchurch ground.

Primary sources

The language

No-fault cover: Coverage without proving blame, the accident happening is the claim, whoever caused it.
The bar on suing: The other half of the deal, personal-injury damages claims are barred, trading lawsuits for automatic cover.
Weekly compensation: Up to 80% of pre-injury earnings while you can't work, the scheme's biggest payment.
Levy: The insurance premium by another name, paid through PAYE, employer levies, petrol tax and rego fees into five accounts.
Treatment injury: Harm caused by the treatment itself, covered since 2005, distinct from the condition being treated.
Work Account: The employer-funded account for injuries on the job, risk-rated, so forestry pays more than accounting.
Review: The first rung of challenging a declined claim, an independent review inside the ACC process.
Fully funded: Whether each account holds enough to pay the lifetime cost of today's claims, the permanent Wellington argument.

The Canterbury of it

The February quake put the scheme through its hardest single afternoon: ACC figures released in 2021 show almost 10,000 claimants from that event alone, about $52 million paid out over the following decade, more than half of it weekly compensation, and a small number of claims still open ten years on, Newsroom, the ACC quake figures.

It also exposed the two-scheme split nobody had ever needed to think about. ACC covers the person; the Earthquake Commission covered the house, contents and land, and a household with a broken back and a broken home dealt with both at once, usually with a private insurer above EQC's caps as a third party. EQC's side ran to roughly 460,000 claims across the sequence, more than three times the worst case its planners had modelled, EQC annual report 2010–11 (PDF).

The aftermath rewrote the other scheme: the Public Inquiry into EQC's Canterbury performance fed the Natural Hazards Insurance Act 2023, and on 1 July 2024 EQC became the Natural Hazards Commission Toka Tū Ake, a Christchurch lesson renamed into the national scheme, NHC, the rename, Treasury, the NHI Act.

Last reviewed 20 September 2026, sources: legislation.govt.nz (Accident Compensation Act 2001), acc.co.nz (cover and weekly compensation), MBIE's 2025 levy regulations. Corrections: /corrections.

Questions, answered briefly

Who pays for ACC?

The scheme is funded like insurance, through levies into five accounts: the earners' levy inside PAYE deductions, employer levies risk-rated by industry for the Work Account, the petrol levy and a licensing fee inside every vehicle registration for road injuries, and general taxation for children, students, beneficiaries and retirees. Levy rates are set by regulation every three years.

What does ACC cover, and what does it pay?

It covers accidents at work, on the road, at home and on the field, plus treatment injury (a category since 2005) and work-caused gradual conditions, illness belongs to the health system. It pays contributions toward treatment, weekly compensation up to 80% of pre-injury earnings, rehabilitation, a lump sum for permanent impairment, and grants and dependant payments for fatal injury.

Can I sue for personal injury in New Zealand?

Generally no, that is the other half of the ACC bargain: negligence claims for damages are barred and cover comes automatically instead of by verdict. Exemplary damages, criminal prosecution and non-injury disputes survive the bar.

What can I do if ACC declines my claim?

Ask ACC for a review, a fresh decision by an independent reviewer, then appeal to the District Court, which hears ACC cases with specialist assessors. The cover line, accident versus illness and work versus non-work, is where most fights live.