What Actually Triggers a WHS System Review? 

by | Jul 13, 2026

A random date on the calendar shouldn’t be what triggers a WHS system review. Many businesses treat an annual check (usually at EOFY) as a sufficient trigger to review their WHS systems. Truth is, this isn’t enough.

Risk doesn’t wait for the calendar to turn over, and a system that’s only reviewed once a year can carry months of undetected gaps before anyone notices. This guide covers what should actually trigger a review, so your WHS system stays current with the reality of your operations.

Why “Once a Year” Fails as a Review Model

An annual review assumes risk changes at a predictable, steady pace, evenly spread across the year. In reality, risk changes in sudden ways: a new site, a new piece of equipment, a new subcontractor, an incident. 

A system reviewed only once a year can be badly out of date for eleven months out of twelve and still look “reviewed” on paper, if you’re working with a “once a year” method.

The Real Indicators You Should Look Out for to Trigger a WHS Review

  • A new site or location. Different site conditions mean different hazards, and a risk assessment built for one site doesn’t automatically transfer to another.
  • New equipment or plant. Any change to the tools, machinery, or vehicles your team uses should trigger a review of the tasks involving them.
  • A new subcontractor or contractor arrangement. Bringing in outside workers changes who’s on site and what compliance standard they’re working to.
  • An incident or near-miss. This is the clearest, most direct trigger there is. If something went wrong, or almost did, the system needs to be reviewed against what actually happened, not just logged.
  • A change in regulations or standards. WHS regulations and the ISO standards they relate to are updated periodically. A system that isn’t checked against current requirements can become non-compliant without anyone doing anything differently on site.
  • Business growth past a threshold. More sites, more employees, or more subcontractors changes the complexity of what your system needs to manage. If you’ve grown, it’s worth checking whether your WHS tools have grown with you.

What This Means in Practice

None of this means an annual check is worthless – it just means it can’t be your only compliance checkpoint. 

A business that reviews its WHS continuously, triggered by real events, alongside a broader annual check is in a genuinely different position to one that waits for the calendar alone.

How MiSAFE Helps

MiSAFE is built around continuous review rather than a once-a-year event. Risk assessments, SWMS, and incident records update as your business changes, so the system stays current with what’s actually happening on site, not with when the calendar last reset.

 

See how MiSAFE keeps your system current 

 

Frequently Asked Questions

What should trigger a WHS system review?

Real changes in the business should trigger a review, including a new site, new equipment, a new subcontractor, an incident or near-miss, a regulation change, or significant business growth.

Is an annual WHS review enough on its own?

No. An annual review can miss months of changes in between. It’s useful as a broader safety net, but should not be the only mechanism triggering review.

How do I know if my business has outgrown its current WHS system?

If you’re managing more sites, subcontractors, or complexity than when the system was first set up, it’s worth reviewing whether your current tools and processes still match the scale of the business.