The obligation
The exposure standard for noise is LAeq,8h 85 dB(A) averaged over 8 hours and LC,peak 140 dB(C). PCBUs must ensure worker exposure does not exceed these limits.
The Code sets out two mandatory exposure limits under the WHS Regulations 2022: (1) an 8-hour time-weighted average of 85 dB(A) (LAeq,8h), and (2) a peak sound pressure level of 140 dB(C) (LC,peak). If measurements show worker exposure meets or exceeds either limit, the PCBU must take action to reduce exposure. The Code details how to measure noise, what instrumentation is required, and how to interpret results against these standards.
- What
- The exposure standard for noise is LAeq,8h 85 dB(A) averaged over 8 hours and LC,peak 140 dB(C). PCBUs must ensure worker exposure does not exceed these limits.
- Source
- worksafe.wa.gov.au
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noise
exposure standard
dB(A)
measurement
Official sources
Frequently asked questions
Which WHS law does this come from?
Noise exposure standards — LAeq,8h and peak is a WHS requirement set out in Managing noise and preventing hearing loss at work (WA). It is made under Work Health and Safety Act 2020 (WA). The relevant provision is WHS > Noise > Exposure Standards § Chapter 3.
What does this WHS obligation require?
Noise exposure standards — LAeq,8h and peak is a WHS obligation under Managing noise and preventing hearing loss at work (WA). In short, The exposure standard for noise is LAeq,8h 85 dB(A) averaged over 8 hours and LC,peak 140 dB(C). PCBUs must ensure worker exposure does not exceed these limits.
What changed recently?
Noise exposure standards — LAeq,8h and peak was last updated on 27 August 2026.
