By Greg Allan, tradesman and creator of Data First Coaching
Why is this hard to pin down for a pool business?
Most pool builders run more than one kind of worker at once, and that is exactly where the classification question gets blurry. An employed technician doing the servicing round, testing water and dosing chemicals at suburban pools, looks nothing like the excavation crew or the concrete pool crew brought in for a fibreglass or concrete pool build. According to Employment New Zealand, a worker is a contractor only if they meet every part of the gateway test, including having a written agreement that says they are independent, being free to work for others, choosing their own hours, and being able to decline extra work without the arrangement ending (see Employee or contractor?). Where any one of those is missing, the business falls back to the common law test, which looks past the paperwork to how the work actually happens. A pool builder juggling a build season and a maintenance round rarely has time to check every arrangement against that list, so classification often gets decided by habit rather than by the facts of the job.
What else does the law look at beyond what's written in the contract?
Calling someone a contractor on an invoice does not settle anything if the day to day work looks like employment. Inland Revenue's interpretation guidance sets out four lenses: how much control the pool business has over how the work is done, how independently the worker operates, whether the worker is really in business on their own account, and how integrated they are into the pool builder's operation, such as using the business's trucks and pump and filter stock, or working the same hours as the employed crew (see IG 16/01). Inland Revenue's own guidance is also direct that a business and a worker cannot change the tax outcome simply by agreeing to call the arrangement contracting when it still functions as employment (see Summary - Tax Technical). For a business mixing an in-house servicing round with subcontracted excavation and concrete pool crews across a season, that means every arrangement needs to be looked at on its own facts, not assumed from last season's agreement.
What does getting this right change on your pool build and servicing numbers?
As a pool builder, the classification call is a compliance question first, but it is also a costing question that decides whether your gross profit on a pool build or a servicing round is real. Once you know whether a worker is an employee or a contractor, that labour cost still has to be attributed to the specific job it worked on, whether it is wages for your servicing technician or an invoice from the excavation crew, rather than left to float in overhead. If a concrete pool crew's invoice or a fibreglass installer's day rate gets buried in overhead instead of sitting against that build, the job can look like it made a healthy margin when the real profit was already spent. The same risk sits inside your maintenance round: if the wages for the technician testing water, changing filters and servicing chlorinators are not counted against the jobs they did, you cannot tell which parts of the round are actually earning and which are being carried by the rest.
What other obligations follow once you've worked out the answer?
Classification is not the end of it. WorkSafe is clear that a worker can be an employee, a contractor or subcontractor, or an employee of a contractor, and whichever it is, your business as the PCBU still carries health and safety duties on a pool build site, from excavation through to pool fence compliance (see Introduction to the Health and Safety at Work Act 2015). WorkSafe also says plainly that a PCBU cannot contract those duties away by putting the work out to a subcontracted crew (see PCBUs working together). ACC levies follow the same split: your business pays levies differently depending on whether a worker is on your payroll or invoicing you as self-employed, so the classification call also changes what you owe ACC each year (see Understanding levies if you work or own a business).
This is general information, not legal, tax or employment advice. Check your own situation with the body named here or a qualified adviser.
How do AI agents help you keep this straight through a busy season?
An AI agent is software that does a piece of your paperwork the way you would do it yourself, following your prices, your wording and your own rules, every time. For a pool business, that means an agent can check that every employee's wage and every contractor's invoice is tagged to the build or servicing job it belongs to as it comes in, instead of landing in a general overhead bucket that only gets sorted at year end. Working this way is data first: the numbers get attributed as the season runs, not reconstructed from memory once a council approval, a renovation or a resurfacing job is long finished. An AI agent can also flag when a long-running arrangement with the same excavation or concrete crew starts to look more like an employment relationship than the contract says, so the question gets asked while it still matters rather than after a compliance certificate or an ACC bill shows the gap.
Where can you check the current rules?
- Employee or contractor? - Employment New Zealand's gateway test and the common law test that applies when it is not fully met.
- Self-employed or employee - Inland Revenue's guideline questions on control, equipment and who carries the work.
- IG 16/01 - Inland Revenue's control, independence, fundamental and integration tests in detail.
- Summary - Tax Technical - why labelling someone a contractor does not decide their tax status.
- Introduction to the Health and Safety at Work Act 2015 - who counts as a worker under the Act.
- PCBUs working together - why health and safety duties cannot be contracted away.
- Understanding levies if you work or own a business - how ACC levies differ for employees, contractors and employers.
How does Data First Coaching approach this?
Data First Coaching starts from your own job and finance data through the Trade Business Intelligence, not from a general rule of thumb about contractors and employees. For a pool builder, that means looking at where every technician's wage and every excavation or concrete crew invoice actually lands on your profit and loss, build by build and round by round, to find whether it is sitting against the job or hiding in overhead. Greg Allan describes his own approach to a job's cost as having “labeled it up, then I put the amount of labour and the time, hourly rate, the materials plus markup” against it. The how of setting this up for your own pool business is worked through inside the Academy, with members, because the Trade Business Intelligence is powered by every member, for owners who are open minded, innovative and willing to share.

