Three things people mix up — a gate, a certified system, and a reality check
These three are often confused, but they answer different questions. Prequalification (SiteWise, PreQual, Totika) is a gate: do you meet a baseline standard so a client can engage you? ISO 45001 certifies that you have a management system built to an international standard. SafePlus is a reality check: an on-site assessment of how well your safety actually works in practice. They're not rivals — in New Zealand, ISO 45001 and SafePlus can both feed into Totika prequalification.
A check that you meet a baseline before a client engages you.
Prequalification schemes — such as SiteWise, PreQual and the national Totika standard — exist so a buyer can be confident a contractor meets an agreed baseline of health and safety capability before awarding work. It is largely a documentation-based check of your policies, processes and records against the scheme's criteria, often resulting in a grade or pass. It answers a buyer's question: can we safely engage this contractor? It is not, in itself, a certification of your management system or a measure of day-to-day performance.
The international standard for occupational health and safety management.
AS/NZS ISO 45001 is the international standard for an occupational health and safety management system. Certification means an accredited third party has audited your system against the standard's requirements and confirmed it conforms, with ongoing surveillance to keep it current. It is about having a structured, audited system for managing risk — broader and more rigorous than a prequalification questionnaire. In New Zealand, an accredited ISO 45001 certification is a recognised entry point to Totika.
An on-site assessment of how well safety actually works.
SafePlus is a health and safety performance-improvement assessment, developed by WorkSafe with ACC and MBIE. Rather than checking paperwork, trained assessors go on-site and look at how safety works in practice — leadership, worker engagement and risk management — and give feedback and a view of your maturity. It is designed to help you improve, not to pass or fail you. In New Zealand, a SafePlus on-site assessment is also a recognised entry point to Totika.
General information, not legal advice. Recognition arrangements and requirements change. Confirm current details with the scheme, WorkSafe, and Totika/CHASNZ before relying on this guide.
| Prequalification | ISO 45001 | SafePlus | |
|---|---|---|---|
| Question it answers | Are you fit to be engaged? | Is your system certified to the standard? | How well does safety work in practice? |
| Mainly based on | Documentation against scheme criteria | Audited management system | On-site assessment of real performance |
| Result | Grade / recognition to win work | Third-party certification | Feedback and maturity rating (not pass/fail) |
| Recognised by Totika? | Totika is the standard | Yes, as an entry point | Yes, as an entry point |
Renewal and recognition timeframes vary by scheme and category. Source: CHASNZ / WorkSafe NZ / ISO.
Not competitors — complementary.
The cleanest way to think about it: prequalification is the gate you pass to be allowed to bid; ISO 45001 certifies your system; and SafePlus assesses your real-world performance. They overlap by design in New Zealand, because Totika recognises both ISO 45001 and SafePlus as routes into prequalification. So work you do on your management system or on a SafePlus assessment isn't separate from prequalification — it can be the very thing that gets you Totika-recognised.
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Prequalification is a buyer-facing gate — a check that you meet a baseline so a client can engage you, largely based on documentation. ISO 45001 is an international standard for an occupational health and safety management system, certified by an accredited third party that audits your system. One opens the door to work; the other certifies how you manage safety.
No. SafePlus is an on-site performance-improvement assessment developed by WorkSafe with ACC and MBIE. It assesses how well safety works in practice — leadership, worker engagement and risk management — and is designed to help you improve rather than to pass or fail you.
In New Zealand, yes. Both an accredited ISO 45001 certification and a SafePlus on-site assessment are recognised entry points to Totika, the national prequalification standard.
It depends on your clients and goals. If you need to win work, prequalification (often via Totika) is the priority. ISO 45001 suits businesses wanting a certified system; SafePlus suits those wanting to assess and improve real-world performance — and both can feed your Totika recognition.
