Even well-established workplace drug and alcohol testing programs can develop blind spots over time. Legislation changes, organisational structures evolve, staff turn over, and what was once a robust program may quietly fall out of step with current best practice — or worse, with your legal obligations.

A periodic audit of your testing program is not merely a good idea; it is a critical governance exercise. Identifying gaps before a regulator, insurer, or Fair Work Commission finds them for you is always the preferable outcome. This guide provides a structured approach to auditing your program and closing any deficiencies.

Why Auditing Your Program Matters

Many organisations implement a drug and alcohol testing program and then treat it as a set-and-forget exercise. The reality is that a program that was compliant and effective five years ago may be neither today. Common triggers for gaps include:

• Legislative amendments — WHS regulations, privacy laws, and workplace relations frameworks are regularly updated.
• Organisational change — mergers, acquisitions, new sites, or restructures can render existing processes inadequate.
• Staff turnover — key personnel who understood the program may have left, taking institutional knowledge with them.
• Technology drift — manual systems that once worked may have become unmanageable at scale.

A systematic audit addresses each of these risks and provides a documented basis for improvement.

Step 1: Review Your Policy for Currency

Your drug and alcohol policy is the legal foundation of your entire program. Begin your audit here.

Key Questions to Ask

• When was the policy last reviewed and by whom?
• Does it reference current legislation, including the Work Health and Safety Act 2011, the Fair Work Act 2009, and relevant state health records legislation?
• Does it address medicinal cannabis, which has become increasingly prevalent since the TGA expanded access?
• Is the policy accessible to all workers, including contractors, labour hire, and remote employees?
• Has the policy been formally acknowledged by all current employees?

If your policy has not been reviewed in the last two years, it should be flagged as a priority. Engage a workplace lawyer with specific expertise in drug and alcohol testing to conduct the review.

Step 2: Assess Selection Integrity

Random selection is the most legally scrutinised element of any testing program. If your selection process is not genuinely random and properly documented, the results it produces may be indefensible.

Audit Checklist for Selection

• Randomness — How are employees selected? If you are using manual methods, spreadsheet formulas, or manager discretion, the process is vulnerable to challenge. Genuinely random selection requires a verifiable algorithm and an audit trail.
• Pool accuracy — Does your selection pool include all eligible employees? Are terminated employees removed promptly? Are new starters added on commencement?
• Frequency — Are selections occurring at the frequency specified in your policy? Document any gaps and the reasons for them.
• Bias analysis — Review historical selection data. Are certain individuals, teams, or demographics being selected disproportionately? Even unintentional patterns can suggest bias.

Step 3: Examine Record-Keeping Practices

Record-keeping failures are among the most common and most damaging gaps. Incomplete or inaccessible records undermine your ability to demonstrate compliance, respond to incidents, and defend decisions in proceedings.

What to Review

• Completeness — Can you produce a complete testing history for any employee on request? This includes selection records, chain of custody documentation, results, and any follow-up actions.
• Security — Who has access to test records? Drug test results are health information under the Privacy Act 1988 and must be handled accordingly.
• Retention — Are records being retained for the required period? Are they being securely destroyed when that period expires?
• Retrievability — If a regulator requested records for a specific employee or date range, how quickly could you produce them? If the answer is hours or days rather than minutes, your system needs attention.

Step 4: Verify Training and Competency

A testing program is only as reliable as the people who administer it. Training gaps are a significant source of procedural error.

• Tester qualifications — Are all persons conducting screening tests trained and current in their accreditation? AS/NZS 4308 and AS 4760 set specific competency requirements.
• Collector training — Specimen collection must follow precise protocols. Verify that collectors have been trained in chain of custody procedures and understand the consequences of deviation.
• Manager awareness — Do supervisors and managers understand their role in the program, including how to identify reasonable suspicion and how to initiate a for-cause test?
• Training records — Can you produce documentary evidence of who was trained, when, and in what? If training records are incomplete, the training itself may be called into question.

Step 5: Evaluate Reporting Capability

Your program should be generating meaningful data. If you cannot answer basic questions about your testing activity — such as how many tests were conducted last quarter, what the positivity rate was, or which sites have the highest non-compliance — your reporting capability is inadequate.

Reports Your Program Should Produce

• Total tests by type (random, for-cause, post-incident, pre-employment) and period
• Positivity rates by substance, site, and period
• Selection compliance (selections run vs. policy requirements)
• Tester activity and workload distribution
• Non-compliance incidents (refusals, evasions, procedural breaches)
• Employee testing history for individual enquiries

If generating these reports requires manual data extraction and spreadsheet manipulation, the risk of error is high and the process is unsustainable at scale.

Step 6: Consider an External Audit

Internal audits are valuable, but they have inherent limitations. The people closest to the program may not see its weaknesses, or they may have a vested interest in not identifying them. An external audit provides independent assurance.

When to Engage External Auditors

• You have not conducted an external review in the past three years.
• Your organisation has undergone significant change (restructure, acquisition, new sites).
• You have experienced a serious incident involving substance impairment.
• You are facing, or anticipate facing, regulatory scrutiny or litigation.
• Your program has been challenged in Fair Work proceedings.

External auditors with specific expertise in workplace drug and alcohol testing can benchmark your program against industry standards and provide a remediation roadmap.

Closing the Gaps

An audit is only valuable if it leads to action. Prioritise identified gaps by risk — legal compliance issues first, then procedural weaknesses, then efficiency improvements. Document your remediation plan, assign accountability, and set deadlines.

Technology plays a significant role in closing many common gaps. Purpose-built testing management software can automate selections, maintain complete digital records, enforce chain of custody workflows, and generate compliance reports on demand — eliminating entire categories of risk that manual processes create.

Ready to identify and close the gaps in your testing program? Start a free trial of FairTest and see how purpose-built software can strengthen every element of your program — from selection integrity to reporting capability.