By Greg Allan, tradesman and creator of Data First Coaching
What happens if a plumbing business has no system to manage health and safety risks?
A plumbing business in New Zealand with no system to manage risk is exposed twice when something goes wrong: once to an injured team member, and once to a commercial client who wants proof of a safety system before they sign again. A gas fitting job can go wrong fast if nobody has checked the fittings and the ventilation before the burner lights. An apprentice sent under a house for his first confined space crawl with a drain camera is relying on someone else to have thought through what could go wrong down there before he goes in.
A callout van with no incident register and no record of what happened on a burst pipe job late at night leaves the owner with nothing to show if a question gets asked later. A strata company or property manager renewing a maintenance contract can now ask for proof of a safety system before the next round of backflow testing is booked. Without a system, the plumbing business owner is left relying on memory, and memory is not evidence.
Why is a plumber's duty of care about more than the paperwork on the van?
Most plumbers already scan a job for what the homeowner cannot see, the age of the hot water system, the state of the tap washers, whether a leak under the sink has been there longer than anyone has let on. That instinct, trained over years of fault finding and leak detection, is exactly what the law expects an owner to apply to the people doing the work, not just the pipes.
The judgement that finds a hidden leak is the same judgement that should be scanning a site for a trench that is not shored, a confined space with no air test, or an apprentice handed a jetter without being told what it can do to a hand. Nobody else in the business can check that judgement at the time it is made, which is exactly where a plumber's duty of care sits.
What are your legal duties under New Zealand's health and safety law as the plumbing business owner?
Under the Health and Safety at Work Act 2015, your plumbing business is what the law calls a PCBU, a person conducting a business or undertaking, and that status applies whether you run the business alone, with an apprentice, or with a full crew and subcontractors on site. According to WorkSafe's introduction to the Act, you must ensure, so far as is reasonably practicable, the health and safety of your workers, and that other people are not put at risk by your work, known as the primary duty of care.
WorkSafe's guidance on PCBUs working together sets out that this covers workers at work including contractors and subcontractors, workers whose work you influence or direct, and other people such as a customer standing in their own kitchen while you replace a hot water cylinder. The same page says that if a notifiable event happens on one of your jobs, you must notify WorkSafe as soon as you become aware of it, and that your workers need access to adequate first aid equipment, facilities and trained first aiders. WorkSafe's guide to the Act adds that this duty includes giving your workers the training, information, instruction or supervision to protect them from risk, and a separate duty to engage them on matters that affect them directly.
What extra duties apply to gas fitting, backflow testing and supervising your apprentices?
Gas fitting carries its own layer of duty on top of your general PCBU duty. WorkSafe's page on who must comply with gas safety says work on any gas installation must be carried out by a person authorised under the Plumbers, Gasfitters and Drainlayers Act 2006, and that the resulting fittings must be safe, with people and property protected from the dangers of the work.
The Plumbers, Gasfitters and Drainlayers Board exists to protect the health and safety of the public by checking the competency of anyone doing sanitary plumbing, gasfitting or drainlaying work, which is why the licence you hold as a plumber, and the licence your apprentice does not yet hold, matters legally as well as professionally, and sits behind every compliance certificate you issue. The Board's own guidance on supervision says supervising is one of the key ways the public is protected, and that you, as supervisor, must assess the job, the health and safety risks, and your apprentice's own skill and experience to decide what level of supervision is needed, whether that is running a drain camera through a blocked drain or handling backflow testing on a commercial site. None of this can be handed to someone else. WorkSafe's guidance on working with or near asbestos confirms that your business cannot contract its duties away, even where subcontractors are brought in for part of a bathroom renovation or a rough-in; each PCBU on site is responsible for making sure its own duties are met.
How does keeping your own job data change how you manage these duties?
Health and safety duties are not a form you fill in once a year, they are a record that has to match what actually happened on your sites, job by job. You may not have an up to date picture of which jobs are confined space, which sites still need backflow testing paperwork chased, or which apprentice has not yet had an updated induction, because that information lives in memory or in whatever notebook was in the van that week. A data first approach starts from your own job records rather than a generic checklist, because the risk on a blocked drain callout in an old building is not the same as the risk on a straightforward tap replacement, and your records need to reflect that difference.
This is where AI agents, software that does a task the way you would do it, with your own prices, wording and site rules, can take over the paperwork that currently gets missed under pressure. An AI agent can be set to hold a job open until a site induction, a gas safety check or an incident note is actually recorded, rather than relying on someone remembering to do it after the callout. Picture a plumbing business where team paperwork, forms, site-specific inductions, incident records and onboarding for a new apprentice, used to sit in different folders and a separate messaging app, with half of it only ever in someone's head. The owner built his own tool around his own jobs, pulling in job information and bringing the forms, the inductions, the incident register and the onboarding into one place, so nothing about a confined space job or a gas fitting job gets signed off from memory. That is the same instinct you already apply to a hot water system or a tap, trained on the people doing the work instead of just the pipes.
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?
- PCBUs working together: advice when contracting, covers duties when you bring in subcontractors, plus the duty to notify WorkSafe and provide first aid.
- Introduction to the Health and Safety at Work Act 2015, explains the PCBU primary duty of care and WorkSafe's role as regulator.
- A guide to New Zealand's key work health and safety law and its regulator, sets out training, supervision and worker engagement duties.
- Working with or near asbestos, explains that a PCBU cannot contract out its duties.
- Other licensing schemes, LBP, explains the purpose of the Plumbers, Gasfitters and Drainlayers Act 2006 and the Board that administers it.
- Plumbers, Gasfitters and Drainlayers Board: supervision, sets out a supervisor's duties over apprentices.
- Who must comply? (gas), sets out who may legally carry out gas fitting work.
- Health and Safety at Work Act 2015, the Act itself, including duties over fixtures, fittings and plant at a workplace.
How does Data First Coaching approach this?
Data First Coaching starts by looking at what a plumbing business's own job records already show about risk, which jobs are confined space, which need gas fitting sign off, which apprentice is still working under supervision, before suggesting a single system. Greg Allan built his trade business before he built this method, and he teaches that protecting the people doing the work sits alongside protecting the business itself, because, in Greg's words, “if their personal health and wellbeing or if their personal, their family breaks, because of your work situation, what's going to happen.” The how, the forms, the registers, the way an AI agent is set up around a specific plumbing business, is worked through inside the Academy, with members, because the Trade Business Intelligence is powered by every member who is open minded, innovative and willing to share.
Looking for a business coach who starts from your numbers? Plumber Business Coach or every answer for plumbers.
