Substance use is measurably higher in construction than almost any other industry — but the honest framing is that it is driven by the work (pain, long hours, insecurity, culture), not weak character. This guide covers what the evidence shows, your rights around testing, how to get help quietly without your employer knowing, and the protections if you disclose.
Confidential support (not your employer). MATES in Construction 1300 642 111 is confidential and does not report to your employer. For crisis, Lifeline 13 11 14 or 000.
What the evidence shows — and how to frame it
Construction sits near the top for alcohol and other drug (AOD) use — national surveys put risky alcohol use among the highest of any industry (second to mining), and illicit drug use well above most sectors. Young male workers report the highest rates. But the driver is not character — it is how the work is set up: chronic pain and self-medication, long hours, insecure boom-bust income, and a "work hard, play hard" culture. Higher use raises the risk of mistakes, injuries and long-term health harm — which is exactly why it is a safety issue, not a moral one. (The figures here are indicative — sensitive prevalence stats vary by study.)
Your rights around drug and alcohol testing
There is no single national drug-testing law — it is a mix of WHS duties, the Fair Work Act and FWC case law, and it mostly comes down to site policy and how it is applied:
- Testing is lawful where there is a legitimate safety reason (high-risk roles — plant, heights, heavy vehicles) and a clear, consistently-applied policy workers know about.
- Refusing a lawful and reasonable test in a safety-critical role can be treated like a positive — the FWC has upheld dismissal for refusal under a clear zero-tolerance policy. But where the policy is unclear or inconsistent, a dismissal can be found unfair.
- A positive test can be a valid reason for dismissal even without proven impairment where the policy bans any presence — and that extends to legally-obtained substances: prescription opioids, and medical or legal cannabis, can still breach a site's drug policy. "Legal to use" does not mean "safe to show up with it in your system under site rules." If you are on prescribed medication (opioids, benzos, ADHD meds), talk to your doctor and confidentially check the policy or an EAP before you start.
Getting help quietly
You can get help without your employer knowing — calling for help does not trigger a site disciplinary process:
- MATES in Construction (1300 642 111) — a construction-specific charity; the 24/7 helpline is confidential and independent of your employer, with connectors who link you to GPs, AOD services and counselling, and follow up.
- EAPs — where your employer or head contractor provides one, it is free, confidential, external counselling that normally reports only de-identified usage data, not individuals (but it is not a shield if you show up impaired — use it early).
- Public and community AOD services — every state runs publicly-funded services that accept self-referral without employer involvement (free or low-cost outpatient counselling, withdrawal support), via state AOD helplines or your GP.
- Detox and rehab — public/NGO (low or no fees, waiting lists, via state AOD assessment) or private (faster, more expensive). MATES or your GP can help you navigate the time off and referrals quietly.
Why the work heightens the risk
The drivers are work-related, not personal failings:
- high physical demands → chronic pain → prescribed painkillers (including opioids) → dependence risk;
- long, shift or remote hours → fatigue, isolation, self-medication;
- insecure, seasonal income → financial stress and "knock-off" drinking (see Financial Stress & Mental Health);
- a young, male-dominated workforce with apprentice cohorts particularly at risk.
This is why the employer's psychosocial WHS duty (see Employer Mental Health Duty) requires designing work — workload, hours, supervision, culture — so it does not foreseeably push people toward harmful coping.
Your protections if you disclose
The "legal floor" versus the real world:
- There is no standalone "addiction" protection in the Fair Work Act, but it protects against adverse action based on a "physical or mental disability", and the DDA 1992 (plus state equal-opportunity law) can treat a substance use disorder as a disability requiring reasonable adjustments — especially with a formal diagnosis.
- However, an employer can still require you to meet the inherent (safety) requirements of the role. So you generally cannot be lawfully sacked simply for a diagnosed addiction if you can work safely with reasonable adjustments — but you can be disciplined or dismissed for turning up impaired, breaching the drug policy, or being unable to do the job safely.
- The practical reality: disclosing and asking for help before a safety incident gives you the best shot at EAP support, adjusted duties or treatment leave. Disclosing only after a failed test puts safety and policy first. Get advice early — your union, a community legal centre, the Fair Work Ombudsman or MATES — before you disclose, so you understand your risk and plan what to say.
Common mistakes
- Assuming "legal" (prescribed or medical) substances are safe under a site drug policy (they are often not).
- Refusing a lawful test in a safety-critical role (treated like a positive).
- Waiting until after an incident to disclose, instead of asking for help early.
- Thinking calling MATES or an EAP will get back to your boss (it will not).
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