Workplace Drug and Alcohol Policy (Australia)

A Workplace Drug and Alcohol Policy in Australia sets the organisation's rules and expectations on workplace drug and alcohol use and the responsibilities of staff and users, supporting compliance with the Fair Work Act 2009 (Cth).

The primary WHS obligation is found in s 19 of the Work Health and Safety Act 2011 (Cth), which requires every person conducting a business or undertaking (PCBU) to ensure, so far as is reasonably practicable, the health and safety of workers. Worker impairment — whether from alcohol, illicit drugs, or prescription medication — is a recognised workplace hazard that a PCBU must manage using the risk management framework in the WHS Regulation 2017 (Cth). Safe Work Australia's model Code of Practice: Managing Risks of Hazardous Chemicals in the Workplace and state WHS regulators' guidance notes (including SafeWork NSW's Drug and Alcohol Guide and WorkSafe Victoria's equivalent) identify impairment testing programs as an accepted control measure. Workers also bear a duty under s 28 of the WHS Act 2011 to take reasonable care for their own safety and the safety of others, and to comply with reasonable WHS instructions.

Australian workplaces that conduct drug and alcohol testing must follow technical standards to ensure legal defensibility. The key standards are AS/NZS 4308:2008 (urine testing — collection, screening, and NATA-accredited confirmatory analysis), AS/NZS 4760:2006 (oral fluid testing), and AS 3547:2019 (breath alcohol testing devices). A positive screening result must be confirmed by NATA-accredited laboratory analysis before any disciplinary action can be taken — a non-negative screen alone is insufficient.

The Fair Work Act 2009 (Cth) governs how a dismissal for a positive drug test will be assessed. Under s 387 of the Act, the Fair Work Commission considers: whether there was a valid reason for the dismissal; whether the employee was notified; whether they had an opportunity to respond; whether they were unreasonably denied a support person; and whether the dismissal was proportionate. Dismissals for positive drug tests in safety-sensitive roles where the policy was clearly communicated and testing was conducted to Australian Standards have consistently been upheld by the FWC. In contrast, dismissals following non-compliant testing procedures, where the policy was not communicated, or where the consequence was disproportionate to the risk, have been overturned as harsh and unreasonable.

A Workplace Drug and Alcohol Policy is essential for any Australian employer where impairment poses a risk to workers or third parties. The policy must be in place and clearly communicated to all workers before any testing commences. The following situations make the policy most immediately necessary.

Safety-sensitive industries: Construction sites, mining operations, oil and gas facilities, rail networks, aviation, road transport, and healthcare settings all involve activities where an impaired worker can cause catastrophic injury. The WHS Act 2011 (Cth) s 19 duty to ensure workers' health and safety requires PCBUs in these sectors to implement an effective impairment management program, of which the Drug and Alcohol Policy is the documented foundation. State WHS regulators — including SafeWork NSW, WorkSafe Victoria, Workplace Health and Safety Queensland, WorkSafe WA, and SafeWork SA — audit safety-sensitive workplaces and expect to find documented drug and alcohol management procedures.

Before commencing testing: Under the Fair Work Act 2009 (Cth) and the FWC's jurisprudence, a policy must be clearly communicated to employees before they can be subject to testing consequences. Implementing testing without first communicating a policy significantly weakens the employer's position in any subsequent unfair dismissal or general protections proceedings.

Enterprise agreement negotiations: In enterprise-agreement-covered workplaces, the right to conduct random testing generally must be expressly provided for in the enterprise agreement or a separate documented written agreement with employees and their representatives. The policy and testing regime are typically negotiated as part of the enterprise agreement bargaining process under Part 2-4 of the Fair Work Act 2009 (Cth) and approved by the Fair Work Commission.

Post-incident response: Following a workplace incident, near miss, or safety observation suggesting possible impairment, the policy provides the legal authority for for-cause testing and the procedural framework for managing the outcome. Without a documented policy, post-incident testing results will be difficult to use in disciplinary proceedings.

Managing prescription medication: The Disability Discrimination Act 1992 (Cth) requires employers to consider reasonable adjustments before taking disciplinary action against a worker who tests positive due to lawfully prescribed medication. The policy must include a procedure for workers to confidentially disclose prescription medication use before testing, enabling the employer to assess safety risk and consider alternative duties before a positive result triggers the disciplinary framework.

A thorough Australian Workplace Drug and Alcohol Policy must address the following elements to meet the requirements of the WHS Act 2011 (Cth), the Fair Work Act 2009 (Cth), the Disability Discrimination Act 1992 (Cth), the Privacy Act 1988 (Cth), and the applicable Australian Standards.

Scope and covered persons: The policy must apply to all workers at the workplace — including full-time, part-time, casual, fixed-term, contractor, labour hire, and apprentice workers — and to any person who enters the workplace in a capacity that creates safety obligations. Visitors and contractors should be subject to the same fitness for work standards.

Prohibited conduct: A clear statement of what is prohibited, including: attending or remaining at work while impaired by alcohol or drugs; having a blood alcohol concentration (BAC) at or above the specified limit (0.00% for safety-sensitive roles, 0.05% as the default maximum for other roles); using, possessing, or supplying illicit substances at the workplace; and misusing prescription or over-the-counter medication in a way that creates an impairment risk.

Testing types and triggers: All types of testing conducted by the organisation must be described — including pre-employment testing (as a condition of engagement), random testing (by computer-generated random selection), post-incident testing (following any workplace incident, near miss, or safety observation), reasonable suspicion testing (based on observable signs of impairment), and return-to-duty testing (for workers returning after a confirmed positive result or following treatment for dependency).

Australian Standards compliance: All testing must be conducted in accordance with AS/NZS 4308:2008 (urine), AS/NZS 4760:2006 (oral fluid), and AS 3547:2019 (breath alcohol) as applicable, including chain of custody procedures. A non-negative screening result must be confirmed by a NATA-accredited laboratory before disciplinary action is taken.

Prescription medication procedure: A confidential pre-test disclosure process for workers taking prescription or over-the-counter medication that may affect a drug screen, enabling the employer to assess safety risk and implement reasonable adjustments under the Disability Discrimination Act 1992 (Cth) before a positive result is acted upon.

Consequence framework: A graduated response from immediate removal from safety-sensitive duties (without prejudice) through to formal disciplinary action and potential dismissal, consistent with the Fair Work Act 2009 (Cth) s 387 requirements for procedural fairness, including written notice of the allegation, opportunity to respond, and right to a support person.

Rehabilitation and EAP: Access to a confidential Employee Assistance Programme (EAP) and a self-disclosure pathway where workers who come forward voluntarily before being tested are managed as a health matter rather than a disciplinary matter, subject to safety obligations.

Privacy and confidentiality: All test results are personal information and sensitive health information under the Privacy Act 1988 (Cth) and must be stored and handled in accordance with APP 11, accessible only to authorised persons with a legitimate need to know.