Employers in Brisbane have a primary duty under Queensland work health and safety law to manage the risks that come from impaired workers. A clear program for drug and alcohol testing in Brisbane is one of the most practical ways to meet that duty. This guide covers the legal background, why drugs and alcohol should be tested together, when to test, which method suits which job, and how digital records keep the program defensible.
Under the Work Health and Safety Act 2011 (Qld), a person conducting a business or undertaking (PCBU) must eliminate or minimise risks to health and safety so far as is reasonably practicable. Impairment from drugs or alcohol is one of those risks. Failing to manage it can lead to penalties and, in serious cases, criminal liability.
A workable testing program supports three duties:
Workers must be consulted when a program is introduced or changed, and the rules should be explained before testing starts.
You should test for both because people often use more than one substance, and the effects add up. Alcohol can mask the sedating effect of stimulants, and cannabis combined with alcohol impairs driving and machine operation more than either alone. A breath test at the gate will miss the drug half of the risk.
Some sites rely on a single breath test at the entrance. That detects alcohol and nothing else. Broader screening closes the gap in three ways:
Research in Frontiers in Pharmacology reports that impairment of driving and operating performance is greater when cannabis and alcohol are combined. Alcohol can increase how fast THC is absorbed, and the pair degrades thinking and movement more than either one does alone. For a crane operator or a truck driver, that is a serious hazard.
Most programs test at four points: before hiring, at random during employment, after an incident, and when a supervisor has a reasonable suspicion. Each trigger answers a different risk, and clear triggers keep testing fair and consistent.
The method depends on what your policy needs to find out. Oral fluid detects very recent use, urine covers a longer window, and breath analysis remains the standard for alcohol. Many Brisbane employers use more than one method across their program.
On-site testing suits random and post-incident tests because it limits downtime and keeps the element of surprise. Clinic testing suits pre-employment checks, where the candidate can attend alone before the first day. Large employers often use both.
| Factor | Clinic testing | On-site (mobile) testing |
|---|---|---|
| Downtime | High, because of travel and waiting time | Low, because testing happens during shifts |
| Productivity | Work is interrupted and hours are lost | Operations continue |
| Random selection | Hard to run for large groups | Easy to run at the gate |
If you plan to bring testing to site, read our guide to mobile drug testing to compare vans and apps.
NEOVAULT is a SaaS platform that replaces paper forms with a secure digital chain of custody. Collectors use the myNEO mobile app to scan kits, capture signatures and upload results, and managers see the data in one dashboard.
Start with the policy and the risk assessment, then choose methods and providers. Testing without a written policy invites disputes, so the paperwork comes first. A simple sequence works for most employers:
Review the program each year and after any serious incident. A short review that checks the policy, the triggers and the records keeps the program current and defensible.
No law requires testing in every industry. Queensland WHS law does require PCBUs to manage impairment risk, and for high-risk work such as construction, transport and mining, regular testing is a practical and defensible way to do it.
Cost depends on the provider, the sample type and whether testing happens on site or at a clinic. Digital records also reduce administration time, which lowers the running cost of a program.
An employee can refuse, but if your written policy requires participation and the request is reasonable, a refusal is usually treated as a breach of that policy and can lead to disciplinary action. Get legal advice before you act on a refusal.
A clear testing program protects your workers and reduces legal exposure. If you want to bring your drug and alcohol testing in Brisbane onto one digital system with a secure chain of custody, contact the Neopharma Technologies team for a NEOVAULT demo.