On December 1, 2026, the regulatory framework for managing airborne hazards in Australia will undergo its most significant overhaul in decades. The current Workplace Exposure Standards (WES) will be officially replaced by Workplace Exposure Limits (WELs).
For Queensland businesses, you’ll need to engage a occupational hygienist and this isn’t just a change in terminology; it is a shift toward a more strictly enforceable, data-driven compliance environment.
WES vs. WEL: Why the Name Change Matters
While “Standards” were often viewed as helpful benchmarks, the new Workplace Exposure Limits (WELs) are defined as legally enforceable upper bounds. Under the new framework:
- A “Limit” is a Hard Boundary: Exceeding a WEL is a direct compliance breach, regardless of whether workers are wearing PPE at the time.
- International Alignment: The shift brings Australia in line with global best practices, ensuring our safety benchmarks reflect the latest health evidence.
- Enforceable Duty: PCBUs (Persons Conducting a Business or Undertaking) must ensure that no worker is exposed to an airborne concentration that exceeds these new limits.
Spotlight on the 31 New Substances
The 2026 update adds 31 new airborne contaminants to the national list that previously had no established limit. Many of these are substances used every day in Queensland’s agricultural, manufacturing, and construction sectors.
| Substance | New 2026 WEL | Common Industry/Source |
| Flour Dust (Cereal) | 0.5 mg/m³ | Commercial bakeries, mills, and food production. |
| Wood Dust | 2 mg/m³ | Joinery, cabinetry, and timber processing. |
| Bitumen Fumes | 0.5 mg/m³ | Road surfacing and asphalt crews. |
| Grain Dust | 1.5 mg/m³ | Silos, feedmills, and bulk handling. |
| Bisphenol-A (BPA) | 2 mg/m³ | Plastics manufacturing and chemical processing. |
Significant Carcinogen Update: Crucially, exposure limits have been removed for 33 genotoxic carcinogens. Because there is no “safe” level of exposure for these substances (such as vinyl chloride), they must be eliminated from the workplace entirely or brought under absolute containment through advanced engineering.
How to Prepare Your Site for 2026
With the transition period ending in late 2026, proactive businesses are already beginning their “gap analysis” to avoid a rush on monitoring services next year.
1. Review Your Chemical and Dust Inventory
Cross-reference your current Safety Data Sheets (SDS) against the new Safe Work Australia WEL list. Identify any “newcomers” like flour or wood dust that may have been previously managed as general “nuisance dust”.
2. Apply the Hierarchy of Controls
If your preliminary risk assessment suggests a potential exceedance, you must apply the hierarchy of controls. Engineering controls (such as local exhaust ventilation) and Administrative controls (such as worker rotation) must be prioritized over PPE.
3. Baseline Air Monitoring
Engaging an occupational hygienist to perform baseline monitoring is the only way to quantify your current exposure levels against the 2026 benchmarks.
