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Under Work Health and Safety Regulation 2025 · made under Work Health and Safety Act 2011

Keeping airborne exposure below workplace exposure limits

Legislation date 1 Dec 2026
High severity
NSW Work Health and Safety Regulation 2025 (NSW) > Hazardous Chemicals > Exposure Limits
The obligation
Under the model WHS Regulations from 1 December 2026, PCBUs must ensure no person at the workplace breathes a contaminant above its workplace exposure limit (WEL).
Until 30 November 2026, PCBUs must still keep exposures below the workplace exposure standards (WES). An exposure limit is one listed in Safe Work Australia's published list, as in force or remade over time. Exposure must stay under the 8-hour TWA and must never go above any short term exposure limit (STEL) or peak limitation, even if the TWA is met. Exposures at the STEL may last no more than 15 minutes, happen no more than 4 times a day, and be at least 60 minutes apart. …
What
Under the model WHS Regulations from 1 December 2026, PCBUs must ensure no person at the workplace breathes a contaminant above its workplace exposure limit (WEL).
Source
safeworkaustralia.gov.au

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What's happened with this Topic

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1 Dec 2026 · Amended
1 update tracked. This law has changed and been enforced.

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Official sources
Frequently asked questions

Which WHS law does this come from?

Keeping airborne exposure below workplace exposure limits is a WHS requirement set out in Work Health and Safety Regulation 2025 (NSW). It is made under Work Health and Safety Act 2011 (NSW). The relevant provision is Work Health and Safety Regulation 2025 (NSW) > Hazardous Chemicals > Exposure Limits.

What does this WHS obligation require?

Keeping airborne exposure below workplace exposure limits is a WHS obligation under Work Health and Safety Regulation 2025 (NSW). In short, Under the model WHS Regulations from 1 December 2026, PCBUs must ensure no person at the workplace breathes a contaminant above its workplace exposure limit (WEL).

What changed recently?

Keeping airborne exposure below workplace exposure limits was last updated on 14 October 2026.

Where this sits

Work Health and Safety Regulation 2025 Work Health and Safety Act 2011 New South Wales Australia

About this Topic

Updates tracked1
Monitoring detail
First seenOct 2026