Clearing the air: new exposure limits on the horizon

From 1 December 2026, new Workplace Exposure Limits (WELs) will officially replace the current Workplace Exposure Standards (WES) across Australia. This change, introduced by Safe Work Australia, will affect how all businesses – large and small – must manage airborne contaminants in the workplace. If your business uses chemicals, works with dusts, fumes, or vapours, or operates in manufacturing, trades, healthcare, or even hospitality, these changes may apply to you. In this article, we’ll discuss what’s changing and how you can prepare.

Why is this happening?

Safe Work Australia reviewed over 700 chemicals to align exposure limits with the latest health evidence. This ensures better protection for workers and clarifies obligations for businesses. The new term “WEL” reflects more precise and enforceable limits on hazardous substances in the air.

What’s changing?

An important modification is the inclusion of 31 new substances on the exposure list, such as diesel particulate matter, flour dust, Bisphenol-A, and polyvinyl chloride dust. These additions reflect the growing understanding of emerging risks and the need for updated safety measures in diverse environments.

Crucially, exposure limits have been removed for 33 genotoxic carcinogens, including compounds like acrylamide, vinyl chloride, and benzidine, due to their high cancer-causing potential. These substances must either be eradicated entirely, replaced with safer alternatives or brought under tight control through advanced containment practices.

Additionally, six banned chemicals, including DDT and Aldrin, have been fully excluded from the updated framework. This removal aligns with global safety and environmental standards, further reducing the likelihood of harmful exposure incidents.

What does this mean for your workplace?

In order to ensure compliance with the new WELs, every PCBU (Person Conducting a Business or Undertaking) must:

1. Identify airborne hazards in the workplace

Conduct a thorough review to determine all potential airborne risks present in your work environment. This includes identifying not just existing hazards but also those added under the new WELs, such as diesel particulate matter or flour dust.

2. Assess exposure levels against the new WELs

Comprehensive exposure monitoring should be performed to evaluate whether current workplace conditions meet the revised limits. This process helps pinpoint areas needing immediate attention to mitigate risks.

3. Implement control measures to protect workers

If any substance exceeds the updated limits, implement robust control measures. This may involve engineering solutions, administrative practices, or personal protective equipment to effectively reduce worker exposure.

4. Update key documentation

Ensure that all workplace documentation, including Safety Data Sheets (SDS), risk assessments, Safe Work Method Statements (SWMS), and hazardous chemical registers, reflects the new exposure limits. Accuracy in these records is essential for compliance and worker safety.

5. Start planning now

With the deadline approaching, early action is critical to ensure compliance. Begin reviewing processes, updating controls, and educating staff to align with the new requirements well before December 2026.

Which industries will be affected?

• Manufacturing & Trades should consider diesel particulates, solvents and dusts.
• Food Services should consider flour dust and cleaning agents.
• Healthcare & Labs should consider chemical agents and disinfection vapours.
• Construction & Maintenance will need to consider adhesives, paints and welding fumes.

How should businesses prepare?

1. Audit your current chemical use: review Safety Data Sheets (SDS) and compare listed chemicals with the new WEL list.
2. Monitor exposure levels: engage an occupational hygienist to conduct air monitoring if required.
3. Update your WHS documentation: revise your risk assessments, Safe Work Method Statements (SWMS), and chemical registers.
4. Train & consult your workers: educate staff on the health impacts of airborne contaminants and new handling procedures.
5. Engage your WHS consultant: use this transition period to get tailored advice. Our experts can help you prioritise high-risk areas and manage compliance efficiently.

Don’t wait until 2026 – act now

The introduction of Workplace Exposure Limits isn’t just a name change; it’s a shift in how businesses must assess and control chemical and airborne risks. Compliance isn’t optional, and acting early ensures your workplace stays safe and legally compliant. Failing to comply can lead to severe financial penalties for both businesses and individuals, and reputational damage.

While the deadline may seem far away, understanding your risk profile and starting preparations early will help avoid costly last-minute compliance issues. Many small and medium businesses may need assistance reviewing their WHS systems, training, and documentation. If this is the case for you, we’re here to help.

Need Help?

If you’re unsure how these changes will affect your business, reach out to our 24/7 safety advice line. We’ll help you break down the WEL changes into practical actions, so you can breathe easy, knowing your workplace is protected. If you’re not a current client, we’re offering a free consultation to help you assess how your business can stay compliant. Contact us here for a chat.