Workplace Exposure Limits Changes Australia 2026

When do the new exposure limits start in each state?

The general commencement date is 1 December 2026, but state announcements already include exceptions. Workplace Exposure Limits (WEL) will replace Workplace Exposure Standards (WES), subject to the legislation and transition arrangements applying to your site.

• NSW announced on 28 October 2026 that the new phosphine limit will start on 1 July 2028. Diesel particulate matter will have an interim limit from 1 December 2026, with the new WEL starting on 1 July 2028.
• Victoria says most new limits apply from 1 December 2026, with transition arrangements for 15 substances continuing through 30 November 2029; the limits following that transition apply from 1 December 2029.
• Western Australia has deferred the new phosphine limit to 1 December 2029. South Australia has announced a deferral to July 2028.
• Regulators in Queensland, Tasmania and the ACT have each announced a transition to the new limits on 1 December 2026.

If you operate across jurisdictions, identify the relevant regulator and any substance-specific arrangements for each workplace. NS Legal can prepare a schedule of compliance dates and management requirements for each site. A transition available at one site should not be assumed to apply at another.

Which contaminants and monitoring methods should we review?

Start with the contaminants your work uses or generates, including dusts, fumes, gases, vapours and mists. Match chemical names and CAS numbers against the official lists. Review safety data sheets alongside your production processes, because a purchasing list alone may miss contaminants created during processing.

The WEL framework includes an eight-hour time weighted average, a short-term exposure limit assessed over 15 minutes and a peak limit. Apply the indicators specified for the substance. Ask your occupational hygienist to identify the relevant sampling method and assess whether your existing results answer the right exposure question.

In NSW, air monitoring of a substance with an exposure standard is required where there is no reasonable certainty about whether that standard is exceeded, or where monitoring is necessary to determine a health risk. Personal exposure monitoring samples the worker’s breathing zone during normal work activities. A competent person should conduct and interpret it.

NS Legal can turn the legal issues in the findings into a corrective action list and prepare instructions for any further occupational hygiene assessment. Bring the full report, including its sampling assumptions and recommendations, so we can distinguish an established finding from a question needing further assessment.

Is being below the limit enough to meet our duties?

Exposure below a limit does not remove the duty to eliminate or minimise risks so far as reasonably practicable. A numerical limit does not establish that every worker will be unaffected. Risk controls should follow the hierarchy, starting with elimination and then considering substitution, isolation and engineering measures before addressing remaining risks through administrative measures and personal protective equipment.

Health monitoring identifies changes in a worker’s health caused by exposure to certain chemicals. In NSW, it is required for ongoing work involving certain hazardous chemicals where the statutory significant-risk and other conditions are met. It must be carried out or supervised by a registered medical practitioner with relevant experience.

Technical monitoring and medical assessments remain matters for the appropriately qualified professionals; NS Legal can prepare your follow-up and corrective action arrangements based on their reports.

What consultation, training and records are required?

NSW employers must, so far as reasonably practicable, consult workers who are or are likely to be directly affected when identifying hazards, deciding on controls and proposing changes that may affect health and safety. Workers need an opportunity to contribute before decisions are made. Where controls change how work is performed, provide suitable information, instruction, training and supervision.

Your consultation process and communications should address how changes fit with your employment contracts and workplace policies. Provide any concerns raised by workers or their health and safety representatives with the proposed response.

In NSW, legally required air monitoring records for contaminants with exposure standards must be kept for at least 30 years and made available to exposed workers. NSW hazardous chemical health monitoring records generally require at least 30 years’ retention and must be kept confidential, with separate requirements for asbestos and other specific hazards.

NS Legal can prepare your worker consultation, record retention and health information disclosure procedures, including related workers compensation insurance and reporting arrangements.

What should we bring to a compliance consultation?

When booking an employer compliance consultation, bring the address of each workplace, your contaminant inventory and current safety data sheets. Include monitoring reports, risk assessments and records of the controls already in use. Rosters, changes to equipment or processes, consultation records and training materials will help us understand how your arrangements work in practice.

NS Legal can use these documents to plan the compliance review and identify any further technical information needed before preparing management and worker consultation documents.

Compiled from official sources; updated 29 October 2026.