What health and safety duties does the owner of a solar business have in New Zealand?

What safety duties sit on the owner of a solar business in New Zealand?

Every solar installer operating in New Zealand is a PCBU, a person conducting a business or undertaking, under the Health and Safety at Work Act 2015. According to Introduction to the Health and Safety at Work Act 2015, a PCBU must ensure, so far as is reasonably practicable, the health and safety of its workers and that other people, such as the homeowner, site visitors or a subbie, are not put at risk by its work. That is the primary duty of care, and it sits on the business itself, not on any one install.

If the owner is also a director or other officer of the company, WorkSafe is clear: “Officers must exercise due diligence to ensure the PCBU meets its health and safety obligations.” That is a personal duty, separate from the company's duty, and it does not disappear because the owner is up on a roof most days rather than behind a desk.

A fuller guide to the Act spells out what that duty looks like in practice on a solar site: providing and maintaining a safe work environment, providing safe plant and structures, and managing the safe use, handling and storage of plant, structures and substances, according to A guide to New Zealand's key work health and safety law. For a solar installer that covers the ladder and roof access point, the inverter and switchboard being worked on, and a battery sitting in the ute before it goes in.

What extra duties apply to roof access, battery handling and site hazards?

Roof access and battery handling carry their own layer of duty on top of the general PCBU duty, because falls and electrical faults are two of the most common ways a solar job goes wrong. WorkSafe's guidance on working at height sets out an example of exactly this overlap on a solar job: a residential builder managing a roof and a solar panel installer working on it both carry responsibility for the risk of a fall, according to Working at height in New Zealand. In that example, the builder has to keep the roof structure safe and edge protection in place, while the solar company has to train its own crew and make sure they do not interfere with that edge protection, with both businesses reviewing the safe work method statement before anyone goes up.

That overlapping duty matters on every commercial solar job and every residential install where the installer is not the only business on site. The same guide notes that PCBUs must, so far as is reasonably practicable, have effective practices in place for a safe work environment, safe plant and structures, safe systems of work, and proper training, instruction or supervision.

Sun exposure is its own duty too. A solar installer's crew is often on an open roof for most of the daylight hours, and WorkSafe's guide on solar UV says a PCBU must, so far as is reasonably practicable, provide the training, instruction or supervision needed to protect workers from health risks, and monitor worker health and site conditions, according to Protecting workers from solar UV radiation.

What rules sit specifically on solar installs, from consent to high-risk electrical work?

Solar carries its own layer of rules on top of general health and safety law, because panel arrays, inverters and grid connection work all sit inside electrical safety and building rules run by a different regulator. The Electrical Workers Registration Board treats solar photovoltaic work as high-risk: “Solar photovoltaic (PV) systems is specialist high-risk work requiring inspection.” according to Is this high-risk work, and do I need an inspection?, which means the install must follow AS/NZS 5033, and must be checked before the system is energised.

Grid connection work also touches AS/NZS 4777.1 and AS/NZS 4777.2, the standards covering inverter connection to the network, according to Electron Issue 115. The same newsletter is clear that wiring work on the mains, the photovoltaic system, EV charger circuits, meter-boxes and switchboards is not work a homeowner can do themselves, so the certificate trail on who did what wiring on a job matters as much as the install itself, and feeds into any warranty claim or service call down the track.

Building consent has moved too. Many roof-mounted arrays can now go in without a building consent, according to Solar panel consent exemption changes, though the same page is clear that the building owner still has to meet the Building Code and the local District Plan, and larger arrays or ones in higher wind zones still need the design checked by a Chartered Professional Engineer. None of that removes the health and safety duty underneath it, it only changes the paperwork.

Why does this safety time disappear into overhead instead of into the price?

The time a solar installer spends on a hazard check, fall protection, PPE and the extra care a battery or a commercial solar switchboard needs is real labour, and it either goes into the price of the job or it comes straight out of the margin. Most quoting in solar is built around the panel, inverter, battery and system size, with safety time folded into a general allowance or left out altogether.

When a roof access turns out harder than expected, or a hazard on site means extra time before anyone can go up, that time rarely gets added back into the invoice. A solar business can look healthy on quoted margin and still come out thin once every job for the quarter is added up, because the safety work that protects the crew and the client was never priced as its own line, it was treated as overhead. That gap does not show up on a single job. It shows up some time later as a gross profit margin that does not match what was quoted, and by then the owner is relying on memory to work out where it leaked.

How do you make sure this duty is priced into the job, not buried in overhead?

You price this properly when the hazard check, the fall protection and the extra handling a battery, an inverter swap or a commercial solar job needs are treated as a cost on every quote, the same way the panel and racking are. The number that tells the truth here is gross profit margin by job type, tracked from your own job and finance data rather than from memory at the end of the quarter, because that is the number that shows whether safety time quietly ate into a job that looked fine on paper.

This is also where the walk around a site earns its keep. A crew member scanning the roof access point, the switchboard and the battery location for everything that needs checking, not just the panel going in front of them, is not doing an invisible compliance step for free. That scan is part of what the client is paying for, and it can be shown as such on the quote rather than buried inside it.

AI agents, which are software set up to do a piece of office work the way you would, with your own prices, wording and rules, can carry the records this duty creates: the hazard checks done, the certificates issued, the network approval and safe work notes filed against each job. Done data first, starting from what each job actually cost once safety time is counted, an AI agent can flag where a job type is quietly running thinner than quoted, instead of the owner finding out at tax time. AI agents do not remove the duty, but they can stop it from being the thing that quietly disappears into overhead.

This is general information, not legal, tax or employment advice. Check your own situation with the body named here or a qualified adviser.

Where can you check the current rules?

• Introduction to the Health and Safety at Work Act 2015, the PCBU's primary duty of care and the officer's due diligence duty.
• A guide to New Zealand's key work health and safety law, what the PCBU duty looks like for plant, structures, substances and the work environment.
• Safe use of machinery, eliminating or minimising risk, and the worker's own duty of care.
• Working at height in New Zealand, overlapping duties on roof access between trades on site.
• Protecting workers from solar UV radiation, training, supervision and monitoring worker health on roof jobs.
• Is this high-risk work, and do I need an inspection?, why solar PV is treated as high-risk electrical work.
• Electron Issue 115, wiring restrictions and the relevant AS/NZS standards.
• Solar panel consent exemption changes, building consent exemptions and when an engineer is still needed.

How does Data First Coaching approach this?

Data First Coaching starts from the owner's own job data, not a generic checklist, to see what safety time actually costs against what was quoted on each solar job. Through the Trade Business Intelligence, Greg Allan looks first at gross profit margin by job type, roof access time, and where a battery or commercial solar job is quietly running thinner than a straightforward panel install, because that is usually where the real problem starts. The how, including the systems and agents built to carry this, is worked through inside the Academy, with members, because the Trade Business Intelligence is powered by every member, for every member, which is why the Academy is built for owners who are open minded, innovative and willing to share.