When do the 2026 health and safety law changes take effect in NZ?

The Health and Safety at Work Amendment Bill passed its third reading on 1 July 2026 and comes into force on 1 April 2027. Until then, the current Health and Safety at Work Act 2015 rules apply in full — nothing changes on site yet. Use the transition period to work out which of your risks count as critical risks and get your paperwork in line with the new focus. WorkSafe and MBIE are still developing the supporting regulations and Approved Codes of Practice, so expect more detail to land through late 2026 and early 2027.

Does my small trade business still need a full health and safety policy?

If you have 1–19 workers (for at least nine of the last twelve months), the amended Act narrows your main duties to managing critical risks — the ones likely to cause death, notifiable injury or illness, or occupational disease — plus basic worker welfare. You still need first aid, an emergency plan and suitable facilities, but you won't be expected to maintain paperwork for low-consequence risks, such as a formal psychosocial harm policy. In practice most tradies will replace generic 40-page H&S manuals with a short, sharp critical risk register. High-risk sectors may be treated differently in the regulations, so watch for the detail if you do demolition, asbestos or major civil work.

What are Approved Codes of Practice (ACOPs) and why do they matter now?

Under the amended Act, ACOPs become a legal safe harbour: if you follow the ACOP for a specific risk, you're deemed to have complied with your duty for that risk. That's a big change — today codes of practice are guidance, not a guarantee. Once WorkSafe publishes ACOPs for common trade risks (working at height is one of the first being developed), following the code word-for-word becomes the cheapest legally-solid way to run your sites. We'll cover each ACOP as it's released.

Do the changes mean I can stop using scaffolding for small jobs?

Not yet. Officials are developing a risk-based hierarchy of controls for working at height, so the safety measure will need to match the actual danger of the job — a quick gutter repair shouldn't automatically require full scaffolding the way it often does today. But that hierarchy comes into force with the rest of the changes on 1 April 2027, and the current rules apply until then. Dropping edge protection or scaffolds early exposes you to prosecution under the existing Act, and WorkSafe is still enforcing it.

Health & Safety Law Changes NZ 2026: Tradie Guide

Q: What is a critical risk under the new Act?

The Bill defines a critical risk as a risk associated with a hazard that is likely to cause death, a notifiable injury or illness, a notifiable incident, or an occupational disease. For most trades that means falls from height, electricity, asbestos, trench collapse, mobile plant, silica dust, confined spaces and structural collapse. The everyday sprains, minor cuts and paper-cut-grade hazards drop out of the compliance spotlight — the law wants your effort going where people actually get killed or seriously hurt.

The biggest shake-up of New Zealand's health and safety law since 2015 passed Parliament on 1 July 2026. The Health and Safety at Work Amendment Bill takes effect on 1 April 2027 — and for small trade businesses it means less paperwork, not more.

Here's what's actually changing, what it means for your business, and what to do during the transition.

The headline change: critical risks only

The amended Act shifts the focus from managing every conceivable risk to concentrating on critical risks — hazards likely to cause death, a notifiable injury or illness, a notifiable incident, or an occupational disease.

For a typical trade business that's falls from height, electricity, asbestos, trench collapse, mobile plant, silica dust and confined spaces — not stubbed toes and lifting technique posters.

Small business exemption (1–19 workers)

If you employ 1–19 workers for at least nine of the last twelve months, your duties narrow to:

Managing critical risks for your trade
Basic worker welfare — first aid, an emergency plan, suitable facilities

You won't be expected to maintain formal policies for low-consequence risks. Most sole traders and small crews can replace a generic H&S manual with a short critical risk register that actually reflects the work they do.

Build yours in five minutes with our free Critical Risk Register Generator.

ACOPs become a safe harbour

Approved Codes of Practice get real legal weight: follow the ACOP for a risk and you're deemed compliant for that risk. Expect WorkSafe to publish ACOPs for the common killers first — working at height is already in development. When they land, following the code becomes the simplest defensible way to work.

Working at height gets risk-based rules

Officials are developing a hierarchy of controls that matches the required safety measure to the actual danger of the job — so a 20-minute gutter repair shouldn't automatically demand the scaffold spend of a full re-roof. Scaffolding certificate of competence categories are also being updated. Full detail in our guide to the working at height rule changes.

What doesn't change

The current Act applies in full until 1 April 2027. WorkSafe is still enforcing today's rules — don't strip back anything yet.
Your duty of care to workers and the public stays. This is a re-focus, not a repeal.
Notifiable event reporting to WorkSafe continues as-is.

What the changes mean for your trade

Each trade's critical-risk profile is different — we've broken down the reform trade by trade:

Builders & carpenters — scaffolds, silica, subbie duty overlaps
Electricians — ladder work, live electricity, old-board asbestos
Plumbers, gasfitters & drainlayers — trenches, confined spaces, gas
Roofers — the height rules rewrite hits roofing hardest
Painters & decorators — scaffold economics, lead paint, solvents
Landscapers & arborists — chainsaws, plant, power lines, lone work

What to do between now and April 2027

Identify your critical risks. Walk your typical jobs and list what could realistically kill or seriously harm someone. Our Critical Risk Register Generator pre-loads the common ones by trade.
Keep your basic welfare sorted — first aid kit, emergency plan, facilities. These duties stay under the new Act.
Watch for the ACOPs. When the working-at-height code lands, adopt it — it becomes your legal safe harbour.
Don't bin your current system yet. Simplify from April 2027, not before.

For the current-law baseline, see our Health and Safety Guide for NZ Tradies.

NZ Health & Safety Law Changes 2026 — What Tradies Need to Know