Fit-for-Duty Testing: Making a Defensible Call

How Australian safety leaders turn drug, alcohol and impairment results into consistent, defensible fitness-for-duty calls.

The deck covers what fitness for duty means under WHS law, why a positive THC test is not a measure of current impairment, the AS/NZS 4308, AS/NZS 4760 and AS 3547 testing standards, the four steps of a fit-for-duty decision (inputs, rule, outcome, record), and what makes that decision hold up if it is challenged later.

Learn more about NEOVAULT, the drug, alcohol and impairment testing platform from Neopharma Technologies.

Transcript

1. Fit-for-Duty Testing: Making a Defensible Call How Australian safety leaders turn drug, alcohol and impairment results into consistent, defensible fitness-for-duty calls. neopharmatechnologies.com
2. 01 · THE DEFINITION What fitness for duty actually means Fitness for duty means a worker is able to carry out their role safely on that shift. It is a decision about this shift. Substances are one input. Fatigue, prescribed medication, illness and stress all count too. Under WHS law, a PCBU must take reasonably practicable steps to manage impairment risk. Fit-for-Duty Testing · NEOVAULT
3. 02 · THE GAP What a positive test can tell you What a drug test tells you What a supervisor needs to know THC is fat-soluble. Inactive metabolites such as THCCOOH can be detected for days, or weeks in regular users, long after any effect has worn off. A positive result confirms past exposure. Can this person operate the haul truck, work at height or run the line safely on this shift? That needs a measure of current capability as well as a lab result. Combining substance testing with cognitive impairment screening gives an objective basis for the call, and protects good workers who are not impaired. Fit-for-Duty Testing · NEOVAULT
4. 0 3 · T H E S TA N D A R D S The Australian standards behind every test STANDARD METHOD BEST USED FOR AS/NZS 4308 Urine Longer detection window. Common in pre-employment screening. AS/NZS 4760 Oral fluid (saliva) Recent use. Suited to random and post-incident testing on site. AS 3547 Breath alcohol Current BrAC reading. Used across all testing triggers. Following the standard keeps a result legally defensible if someone challenges it later. Fit-for-Duty Testing · NEOVAULT
5. 04 · THE DECISION How a fit-for-duty decision is made and recorded 1 2 3 4 Inputs Rule Outcome Record Substance test result, impairment screen, supervisor observation, prior history. The policy threshold for this role, this site and this test type. Fit, retest, stand down, or refer to confirmation testing. Inputs, rule and outcome stored together, with who decided and when. A lawyer or regulator will ask for step four first. Fit-for-Duty Testing · NEOVAULT
6. 05 · THE MOMENTS Where the decision happens Pre-start Random selection A crew screened before they go on tools, with results in front of the supervisor. Selection, notification and records that show the selection was genuinely random. Post-incident Return to work The workflow enforces the same sequence, even under pressure. Readiness confirmed and documented before someone goes back on site. Fit-for-Duty Testing · NEOVAULT
7. 06 · THE EVIDENCE What makes a decision defensible later Chain of custody: every hand-over of a sample logged with a timestamp and both parties identified. Donor verification: identity confirmed and captured at the point of collection. Consent and policy acknowledgement on file for employees and contractors alike. Equipment records: calibration logs for breath analysers and device lot details. One record that ties the result, the rule applied and the outcome together. Fit-for-Duty Testing · NEOVAULT
8. 0 7 · T H E P L AT F O R M How NEOVAULT brings it together Drug + impairment Real-time results Audit-ready by default Drug and alcohol testing combined with scientifically validated cognitive impairment screening. AI-supported result reading on the smartphones and tablets crews already carry. Automated chain of custody, guided collector workflows and multi-site dashboards. Certified across ISO 27001, SOC 2 Type 2, HIPAA and EU compliance. Explore NEOVAULT → www.neopharmatechnologies.com/neovault
9. FURTHER READING Guides for Australian safety and HR teams Impairment risk management in Australia Cannabis impairment vs THC detection WHS drug and alcohol testing requirements Drug and alcohol testing audit trail Australia 1800 636 8378 · USA/Canada 1844 636 8378 · Perth · Utah · Kuala Lumpur www.neopharmatechnologies.com/neovault © 2026 Neopharma Technologies