Launching a workplace drug and alcohol testing program is a significant undertaking. When done well, it strengthens workplace safety, deters substance misuse, and demonstrates an organisation’s commitment to its legal obligations. When done poorly, it exposes the organisation to legal challenges, erodes employee trust, and fails to achieve its intended purpose.

Having seen organisations of all sizes navigate this process, certain mistakes appear with remarkable consistency. Understanding these pitfalls before you begin — or recognising them in an existing program — can save considerable time, money, and reputational risk.

Here are the five most common mistakes organisations make when establishing a drug and alcohol testing program, and how to avoid them.

1. Testing Without a Written Policy in Place

This is arguably the most consequential mistake an organisation can make, and it is more common than many people realise. Some employers begin testing employees before a formal drug and alcohol policy has been drafted, communicated, and acknowledged by the workforce.

The risks of this approach are substantial. Without a clear, documented policy, the organisation has no defined framework for how testing is conducted, who is subject to testing, or what happens when a positive result is returned. This creates immediate vulnerability in any unfair dismissal claim or workplace dispute.

What the Fair Work Commission Looks For

Fair Work Commission decisions consistently examine whether the employer had a lawful and reasonable drug and alcohol policy that was communicated to employees. If the policy does not exist — or if it was not provided to the employee before the testing event in question — the Commission is far more likely to find that any resulting disciplinary action was unfair.

A robust policy should cover:

• Scope — which workers are covered, including employees, contractors, and labour hire.
• Prohibited conduct — what constitutes a breach, including attending work under the influence, consuming substances during work hours, and refusing a test.
• Testing occasions — pre-employment, random, for-cause, post-incident, blanket, and return-to-work.
• Consequences — a clear disciplinary framework for positive results and refusals.
• Support pathways — reference to your Employee Assistance Program and rehabilitation options.
• Privacy protections — how results are stored, who has access, and retention periods.

Have the policy reviewed by a workplace lawyer before it is rolled out. Then ensure every person covered by the policy receives a copy, attends an awareness session, and signs an acknowledgement.

2. Not Training Supervisors and Managers

Many organisations invest heavily in developing their policy document and engaging a testing provider, then neglect one of the most critical links in the chain: the supervisors and managers who must implement the program on a day-to-day basis.

Frontline supervisors are typically the people who will need to identify signs of potential impairment, initiate for-cause testing, manage the notification process when an employee is randomly selected, and handle the immediate aftermath of a positive result. Without proper training, they are ill-equipped for any of these responsibilities.

Common Consequences of Inadequate Training

• Failure to act on observable impairment — supervisors who have not been trained to recognise signs of impairment may allow visibly affected workers to continue in safety-sensitive roles, creating serious WHS exposure.
• Inconsistent application — without clear guidance, different supervisors may apply the policy differently, leading to perceptions of unfairness or bias.
• Procedural errors — a supervisor who does not understand the testing process may inadvertently compromise the chain of custody, give the employee grounds to challenge the result, or breach confidentiality requirements.
• Poor documentation — for-cause testing decisions, in particular, must be documented thoroughly. An untrained supervisor may fail to record the observable signs that triggered the decision, weakening the organisation’s position if the matter is challenged.

Supervisor training should be formal, documented, and refreshed at least annually. It should cover the organisation’s specific policy, the triggers for each type of testing, documentation requirements, confidentiality obligations, and how to access support for the employee.

3. Relying on Non-Random Selection Methods

Random testing is the cornerstone of most workplace drug and alcohol programs. It serves as both a deterrent and a detection mechanism. However, the word “random” is frequently misapplied.

Some organisations use selection methods that appear random but are not genuinely so. Common examples include:

• A supervisor choosing which workers to test based on who is available or convenient.
• Selecting the same proportion of workers from each team, regardless of team size.
• Using basic spreadsheet functions that do not produce statistically random outcomes.
• Rotating through the workforce alphabetically or by employee number.

Any method that does not give every eligible employee an equal probability of selection in each round is not truly random, and it is vulnerable to legal challenge.

Why Genuine Randomness Matters

In an unfair dismissal hearing, the employee’s representative will almost certainly scrutinise how the selection was made. If they can demonstrate that the process was not genuinely random — or that certain employees were more or less likely to be selected — the entire test result may be called into question.

A defensible random selection process requires a documented methodology, an auditable record of who was in the pool for each selection event, and evidence that the selection was generated without human bias. Purpose-built software is the most reliable way to achieve this, as it produces verifiable random selections with a complete audit trail.

4. Poor Record-Keeping Practices

Drug and alcohol testing generates sensitive data that must be managed with care. Yet many organisations treat record-keeping as an afterthought, relying on paper forms stored in filing cabinets, informal spreadsheets, or scattered email chains.

Poor record-keeping creates problems on multiple fronts:

• Compliance risk — regulators and principal contractors may require you to produce testing records at short notice. If your records are incomplete, disorganised, or inaccessible, you may fail an audit.
• Legal exposure — in a Fair Work or WHS proceeding, the quality of your records will be scrutinised. Missing or inconsistent records undermine your position.
• Privacy breaches — test results are health information under the Privacy Act 1988 and must be stored securely with restricted access. Paper records in unlocked cabinets or results emailed to distribution lists are clear breaches.
• Inability to identify trends — without structured data, you cannot analyse your program’s effectiveness, identify high-risk areas, or report meaningfully to leadership.

What Good Record-Keeping Looks Like

At a minimum, your system should maintain a complete record of every test conducted — including the date, time, location, collector, specimen type, and result. Selection event records should show the pool composition, the selection method, and the outcome. Chain of custody documentation must be linked to each test. All records should be stored in a secure, access-controlled system with a clear retention policy.

If you are still managing this in spreadsheets, you are almost certainly falling short on at least one of these requirements.

5. No Support or EAP Pathway for Employees

A drug and alcohol testing program that is purely punitive — test, catch, terminate — is both legally vulnerable and ethically questionable. It also fails to achieve the program’s broader objective: reducing substance-related risk in the workplace.

Employees who are struggling with substance use disorders are more likely to engage with treatment and return to productive work if the organisation provides a genuine support pathway. This does not mean there should be no consequences for a positive result. It means that consequences should be proportionate and that access to support should be integrated into the process.

Why This Matters Legally

The Fair Work Commission has found dismissals to be unfair in cases where the employer had no Employee Assistance Program, no rehabilitation pathway, and no consideration of the employee’s personal circumstances. A purely punitive approach can also contribute to claims of adverse action under the Fair Work Act 2009 if an employee’s substance use is connected to a disability or medical condition.

Practical Steps

• Establish or maintain an Employee Assistance Program and reference it in your policy.
• Define a clear return-to-work process for employees who return a positive result and engage with treatment.
• Train supervisors to offer support alongside any disciplinary process.
• Ensure the process treats employees with dignity — the testing experience itself should be respectful and confidential.

Building a Program That Works

The difference between a drug and alcohol testing program that protects your organisation and one that creates additional risk often comes down to these foundational elements. A clear policy, trained supervisors, genuinely random selection, thorough records, and a support pathway are not optional extras — they are the minimum requirements for a defensible, effective program.

If you are launching a new program or reviewing an existing one, FairTest provides the tools to get these fundamentals right — from automated random selections and digital test records to compliance reporting and audit trails. Start your free trial today and build your program on solid ground.