Noise, hearing protection and when testing is actually triggered

A loud warehouse is not, by itself, a warehouse with an audiometric testing duty. The model trigger is narrower and more specific than that, and getting the distinction right is the difference between a defensible programme and a guess.

Last updated 2026-08-24

The exposure standard, and what it measures

The model noise Code gives the exposure standard as an LAeq,8h of 85 dB(A), or an LC,peak of 140 dB(C). The first is an average over an eight-hour shift; the second is a peak, a single loud event rather than a sustained level.

Both parts matter and they behave differently. An eight-hour average tolerates short loud moments if the rest of the shift is quiet, which is why a subjective impression of a noisy day is a poor proxy for it. The peak measure exists because a single impulse — a dropped load, a pneumatic release — can damage hearing regardless of what the average says.

These are the two figures on this page, and they are here because they are load-bearing: the testing trigger below refers back to them. They come from the model Code as retrieved, and how the exposure standard is enacted is a matter for your jurisdiction rather than the model text.

The trigger, stated exactly

The audiometric testing duty in model regulation 58 turns on this: the duty applies where "the worker is required to frequently use personal hearing protectors as a control measure for noise that exceeds the exposure standard".

Read that as a chain with three links. Noise exceeds the exposure standard. Hearing protection is being relied on as the control for it. And the worker is required to use that protection frequently. All three, together.

What it is not is "the workplace is loud". A shed can be unpleasant and still not exceed the standard. Noise can exceed the standard and be controlled by something other than personal protection — enclosure, distance, a quieter machine — in which case the chain breaks at the second link. Content that says "if your warehouse is loud you need hearing tests" is describing a duty that is genuinely narrower than that.

  • Noise exceeding the exposure standard, and
  • personal hearing protectors used as the control for it, and
  • a requirement to use them frequently

When the testing happens

Where the trigger is met, the model provisions set the timing: an initial test within three months of the worker commencing the work, and follow-up testing at least every two years.

The initial test has an obvious purpose — it establishes a baseline before the exposure has had time to do anything, which is what makes subsequent tests interpretable. A programme that starts testing people who have already worked in the role for years is measuring an unknown starting point.

One thing we could not establish is whether "frequently" is defined numerically anywhere in the Code — a specific hours-per-week or shifts-per-month threshold. We did not find one in what we retrieved and we are not inventing one. If you find a figure quoted, ask which document it comes from.

Where warehouse noise actually comes from

Understanding the trigger helps you look in the right places. Sustained noise in a warehouse tends to come from plant running continuously — conveyor, compressors, refrigeration, wrapping equipment — while impulse noise comes from handling: pallets dropped onto concrete, steel on steel, tailgates.

Fleet choice changes the picture more than most operators expect. The difference between electric and combustion trucks is an acoustic difference as well as a fuel one, and the machines involved are all plant under WHS law with their own control expectations. A counterbalance truck working a dock behaves differently again from a machine spending its day inside an aisle.

Because the standard measures exposure over a shift, the same building can produce very different results for a picker, a dock hand and someone in a plant room. Exposure is personal, not architectural.

What this page cannot tell you

Whether noise at your site exceeds the exposure standard is a measurement question, requiring the right instrument, the right method and a person who knows how to use both. Whether your workers are required to use hearing protection frequently is a fact about how your work is organised.

Neither is a judgement we can make, and neither follows from anything on this page. What we have done is set out the category and the trigger precisely enough that you can see which facts about your site would decide it, and take that to someone who can measure them. Competence is the recurring answer in this area, and the frame around it is the duty structure and whichever Codes your jurisdiction has approved. The protective equipment side of the floor sits under warehouse safety equipment.

Common questions

Does a loud warehouse mean hearing tests are required?
Not on its own. The model trigger for audiometric testing is that a worker is required to frequently use personal hearing protectors as a control for noise that exceeds the exposure standard. Loudness alone does not establish that noise exceeds the standard, and even where it does, the duty turns on frequent reliance on hearing protection as the control.
What is the noise exposure standard?
The model noise Code gives it as an LAeq,8h of 85 dB(A) or an LC,peak of 140 dB(C) — an eight-hour average and a peak measure. Whether a particular workplace exceeds either is a measurement question rather than an impression, and how the standard applies in your state depends on your jurisdiction's own regulations.
How often does audiometric testing happen?
Where the duty is triggered, the model provisions set an initial test within three months of the worker starting the work, with follow-up testing at least every two years. The initial test matters because it establishes the baseline everything after it is read against.
How often is "frequently"?
We could not confirm whether the Code defines that numerically, and we are not supplying a number. If you encounter a specific figure, it is worth asking which document it comes from before relying on it.

Sources

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