Workplace Exposure Limits 2026: A Facility Manager's Guide

What actually changes on 1 December 2026

Until now, the airborne concentration numbers cleaners and facility managers relied on were called Workplace Exposure Standards (WES). They functioned as regulatory reference values, but their enforceability and currency had drifted over years of piecemeal updates. Safe Work Australia reviewed approximately 700 chemicals and the outcome is the Workplace Exposure Limits (WELs), which commence on 1 December 2026.

Two things matter here. First, the terminology and legal standing shift: WELs are enforceable limits, not advisory standards. Second, a meaningful number of the reviewed values were tightened, several substances gained new or lower limits, and some picked up short-term exposure limits or skin-absorption notations they did not previously carry. If your chemical register was built around old WES figures, it is now out of date.

This is a national model framework, and adoption sits with each state and territory WHS regulator. The commencement date is set, but you should confirm the exact instrument in your jurisdiction rather than assume identical wording everywhere.

Which cleaning-relevant chemicals are affected

Commercial cleaning is chemical-heavy, and several of the substances under review appear routinely in conventional cleaning products or are generated during cleaning tasks. The categories worth auditing in your register include:

• Quaternary ammonium compounds ("quats") — widespread in disinfectant wipes and spray-and-wipe products; associated with respiratory sensitisation.
• Chlorine and hypochlorite by-products — bleach-based sanitisers, particularly where they contact acids or ammonia.
• Glycol ethers and solvents — found in some hard-surface and glass cleaners.
• Formaldehyde — released by certain preservatives and biocides in cleaning chemistry, and a substance NABERS Indoor Environment specifically tests for.
• Ammonia — in some glass and multi-surface products.

We are not going to publish a substance-by-substance number table here, because the precise WEL values, notations and any short-term limits are set out in Safe Work Australia's published list and its jurisdictional adoptions. Reproducing a partial table risks giving you an authoritative-looking figure that is wrong for your product or your state. The correct source is the official list cross-referenced against each product's current Safety Data Sheet (SDS).

The health evidence behind the tightening

The direction of travel is not arbitrary. The occupational health case against routine hazardous cleaning-chemical exposure is now strong.

The Svanes et al. 2018 analysis of the European Community Respiratory Health Survey (ECRHS) found accelerated lung-function decline in people who cleaned regularly, on a scale the authors compared to smoking around 20 pack-years. Closer to home, the Australian Institute of Health and Welfare attributes an estimated 9 to 15 per cent of adult-onset asthma to occupational exposure, and names cleaning as a high-risk occupation. Deloitte Access Economics has put the cost of asthma to Australian employers at $526.7 million a year.

That evidence base is why elimination and substitution — not just better ventilation or more personal protective equipment — is where the regulatory pressure is heading.

A PCBU's duties, in order

Under the WHS framework, a Person Conducting a Business or Undertaking (PCBU) — which covers most facility managers and building owners — carries specific, non-delegable duties around hazardous chemicals. The practical checklist for WEL readiness:

1. Maintain a current hazardous chemicals register listing every cleaning product used on site.
2. Hold a current SDS (issued or reviewed within the last five years) for each of those products.
3. Assess exposure against the applicable limits — and from 1 December 2026 that means WELs, not the superseded WES.
4. Apply the hierarchy of controls, working from the most effective control down.
5. Conduct air monitoring where there is uncertainty about whether a limit is being exceeded.
6. Consult, inform and train workers about the chemicals they handle.

The hierarchy of controls is the part facility managers most often under-use. It ranks controls from most to least effective:

Rank	Control	Cleaning example
1 (most effective)	Elimination	Remove the hazardous chemical from the site entirely
2	Substitution	Swap a quat spray for a non-hazardous alternative
3	Engineering	Increased ventilation, dilution-control dispensers
4	Administrative	Dwell-time rules, training, signage
5 (least effective)	PPE	Gloves, respirators for the cleaner

Most cleaning contracts default to the bottom two rungs. WELs make the top two rungs the smarter compliance play, because you cannot breach an airborne exposure limit for a hazard that is not present.

How elimination satisfies the duty

This is where method matters more than marketing. Eliminating or substituting hazardous cleaning agents is the single control that sits at the top of the hierarchy, and it removes the exposure-limit question at source rather than managing it downstream.

Our standard toolkit is built for exactly this. Electrolysed water is generated on site from water and a trace of salt, is GECA-certified and TGA-listed, and reverts to salt water after use — it carries no hazardous airborne residue for a WEL to apply to. Stabilised aqueous ozone reverts to oxygen and water. Dry steam is low-moisture thermal decontamination with no chemical input at all. Colour-coded microfibre with disciplined dwell times ties the system together.

An honest caveat: this is not a claim that we use no chemistry whatsoever. We retain TGA-listed disinfectants for disinfection-critical tasks where a listed product is the appropriate control — that is the responsible position, not a workaround. What we can accurately say is no added synthetic chemicals on standard scopes and no hazardous residue. We do not use the terms "chemical-free" or "100% chemical-free", because under ACCC guidance those claims are not defensible.

The rating and cost picture

Elimination-first cleaning also lines up with the rating schemes facility managers are already chasing. GECA-certified products are deemed-to-satisfy for the Green Star Green Cleaning credit. The WELL Cleaning Products and Protocol feature targets hazardous-chemical reduction directly. NABERS Indoor Environment tests VOCs and formaldehyde — both of which a hazardous-chemical-free program is designed to keep low.

On cost: for standard cleaning scopes we price at parity with conventional cleaning. A +10 to 15 per cent premium applies only on health-critical or rating-critical sites — think medical precincts, or a CBD office tower pursuing a specific WELL or NABERS outcome. The walkthrough and quote are free, so you can test that against your current contract before committing.

If you manage sites in a major metro market, our Sydney and Melbourne partner teams can walk your buildings and map your existing chemical register against the incoming WELs.

What to do before 1 December 2026

With the commencement date now months away, a sensible sequence is: pull your current chemical register, gather every SDS, flag any product containing the constituents listed above, and decide for each one whether you will eliminate, substitute, or control. The products you can eliminate are the ones that stop being a compliance liability entirely.

Book a free site walkthrough

We will walk your site, review your current cleaning-chemical register against the incoming Workplace Exposure Limits, and show you exactly which products can be eliminated or substituted before 1 December 2026 — with a written quote at parity on standard scopes. Book a free, no-obligation walkthrough and we will do the assessment work for you.