Personal Leave For Mental Health: Employer’s Compliance Guide In Australia

Supporting mental health at work isn’t just good culture - it’s a legal and business essential in Australia. As awareness grows, more team members are asking whether they can take sick leave for mental health reasons, and how the process works.

As an employer, you’re balancing compassion with compliance. You want to do the right thing for your people while meeting obligations under the Fair Work framework, discrimination laws and work health and safety (WHS) requirements.

This guide explains how personal (sick) leave applies to mental health in Australia, what evidence you can ask for, where privacy rules apply, and practical steps to manage requests fairly and lawfully. If you build your approach around clarity, confidentiality and care, you’ll protect both your team and your business.

What Is Personal Leave For Mental Health?

Under the National Employment Standards (NES), full-time and part-time employees are entitled to paid personal/carer’s leave when they are “not fit for work” because of a personal illness or injury. That definition covers mental health conditions such as anxiety, depression, burnout, acute stress and other clinically recognised conditions.

In short, mental ill-health is treated like any other illness - if an employee is unfit for work, they can access paid personal leave (if accrued). There is no separate category called “mental health leave” under the NES.

Is Mental Health Sick Leave Different From Ordinary Sick Leave?

No. The Fair Work framework does not distinguish between physical and mental conditions. If an employee is unfit for work, their paid personal/carer’s leave applies in the usual way.

What About Casual Employees?

Casuals do not accrue paid personal/carer’s leave. The NES also doesn’t give casuals a general entitlement to unpaid personal leave for their own illness. However, casuals do have other entitlements such as unpaid carer’s leave to care for an immediate family or household member, and compassionate leave in specific circumstances. For time off related to their own mental health, a casual can request unpaid leave by agreement with you, or you can consider flexibility options on a case-by-case basis. It’s worth having a clear policy so expectations are understood from the start, and to set out when unpaid leave may be available.

Do One-Off “Mental Health Days” Count?

They can, provided the employee is genuinely unwell and not fit for work. Employees should notify you as soon as practicable and comply with any evidence requirements in your policy or applicable industrial instrument. Treat these requests like any other short absence for illness.

Employee Entitlements: How Much Personal Leave Can Staff Take?

Full-time employees accrue 10 days of paid personal/carer’s leave for each year of service. Part-time employees accrue on a pro‑rata basis. Unused leave carries over year to year. Leave accrues progressively and is available as it’s accrued.

There’s no cap on the number of days that can be taken if accrued - the limit is the employee’s balance. If an employee has no paid personal leave left, they may request other options you provide (such as annual leave or unpaid leave by agreement). Your Employment Contract and policies should make these pathways clear to avoid confusion when someone needs time out.

Longer Absences And Fitness To Return

For extended absences related to mental health, it’s reasonable to talk about a supported return to work plan and, where appropriate, ask for medical confirmation that the employee is fit to resume their duties (with or without adjustments). Requests for a medical clearance should be proportionate and tied to genuine safety or operational reasons - this is covered further in our guidance on medical clearance to return to work.

Evidence, Confidentiality And Privacy: What Can You Ask For?

Employers can request “reasonable evidence” that would satisfy a reasonable person that leave is taken for a genuine reason. In practice, this is usually a medical certificate or a statutory declaration. For mental health absences, the certificate does not need to state the diagnosis - a statement that the employee is (or was) unfit for work on specified dates is sufficient.

Setting Evidence Expectations

Best practice is to set out your evidence rules in a clear leave policy or staff handbook (for example, when a certificate is required for one day vs multiple days, and how to provide it). Having this in writing helps ensure consistency and fairness. If you need a starting point for building policies managers can follow, consider a central workplace policy and staff handbook that covers leave, evidence and communication expectations.

Privacy: APPs And The Employee Records Exemption

Handling health information demands care. In Australia, the Privacy Act 1988 (Cth) and the Australian Privacy Principles (APPs) apply to many private sector organisations (generally those with annual turnover above $3 million, and some smaller entities in certain sectors). There is an “employee records exemption” for private sector employers, but it’s narrower than many assume.

• The exemption applies to acts or practices directly related to a current or former employment relationship and to employee records held by the employer.
• It generally doesn’t cover prospective employees, nor how you collect health information before someone is hired.
• Other laws can still apply, including workplace surveillance and health records laws at the state or territory level.

Regardless of whether the APPs apply to your business, treat medical certificates and mental health information as highly confidential. Limit access to a need‑to‑know group, store it securely and explain your approach to staff. If your business is covered by the APPs (or you choose to adopt APP‑style practices), publish and follow a clear Privacy Policy that addresses how you handle employee and candidate information.

Can You Challenge A Sick Leave Claim?

Proceed with caution. If the employee provides reasonable evidence (for example, a medical certificate), disputing the absence can create legal risk. Unlawful adverse action under the Fair Work Act’s general protections and discrimination claims under the Disability Discrimination Act 1992 (Cth) or state anti-discrimination laws are real possibilities. Unless you have a strong and reasonable basis to believe the claim is not genuine, the safer course is to accept the evidence and focus on support and safe return to work.

Asking For More Detail

You can’t require a diagnosis. You may, however, ask for information that relates to capacity and safety - for example, whether the employee is fit for work, any recommended adjustments, and expected timeframe. For short absences, a simple certificate is usually enough. For longer or safety-critical roles, a targeted request for capacity information can be appropriate. Ensure any request is proportionate to the role and risks.

Casual Employees And Evidence

Casuals taking time off to care for an immediate family or household member (for example, where a family member is experiencing acute mental ill-health) can be asked for reasonable evidence too. Your policy should make it clear what’s required and how to provide it. For more detail on short-notice documentation, see our note on medical certificates for casual employees.

Employer Obligations: Compliance Checklist For Mental Health Leave

Several areas of Australian law intersect when an employee takes personal leave for mental health. Keep the following pillars in view.

1) Fair Work Entitlements And Protections

• Allow eligible employees to access paid personal/carer’s leave when unfit for work due to mental health conditions.
• Record leave balances accurately and keep reliable attendance records.
• Don’t take adverse action (for example, dismissal, demotion, changing hours to disadvantage) because an employee has exercised their workplace rights to take leave or provide a medical certificate.
• Apply your evidence policy consistently to avoid claims of unfair treatment.

2) Work Health And Safety (Including Psychosocial Risks)

WHS laws require you to provide a safe workplace, which includes managing psychosocial hazards (for example, high job demands, poor support, bullying or conflict). If indicators of mental ill‑health arise, engage early - offer adjustments, address hazards and consult with the worker about workable solutions. A practical approach to WHS is part of your core duty of care as an employer.

3) Anti‑Discrimination

It’s unlawful to treat an employee less favourably because of disability, which can include mental illness. Focus on capacity and reasonable adjustments. Document your decision‑making and consult the employee about what might help them perform the role safely and effectively.

4) Confidentiality And Privacy

Limit access to health information, store it securely and keep discussions discreet. If your business is APP‑regulated, ensure your Privacy Policy and internal processes align with the APPs. Even if you’re exempt, adopting robust privacy practices builds trust and reduces risk.

5) Communication And Process

Clarity and consistency reduce disputes. Encourage early notification, explain evidence rules upfront and respond promptly to leave requests. Clear communication standards are part of healthy workplace practice and can sit within your broader workplace communication framework.

Best Practice: How To Manage Personal Leave For Mental Health

Legal compliance sets the floor. These practical steps help you build a safe, supportive and productive approach.

Set Clear Policies And Train Managers

Have a written leave policy that covers notification, evidence and contact during absence. Train managers to apply it consistently - especially around confidentiality, respectful check‑ins and how to respond if someone discloses a mental health concern. Housing these rules in a staff handbook makes them easy to find and follow.

Encourage Early Conversations (Without Pressure)

Let employees know it’s okay to speak up early. Early conversations can uncover simple adjustments (for example, temporary changes to workload, hours or location). Make it clear that disclosure is voluntary and that any health information will be handled confidentially.

Focus On Capacity And Adjustments

When someone is returning from mental health leave, speak in terms of duties and capacity rather than diagnosis. Ask what adjustments might help them perform safely. Document agreed changes and review after a set period.

Be Proportionate With Evidence And Check‑Ins

For short single‑day absences, a light‑touch approach often works. As absences lengthen or risks increase, it can be reasonable to ask for more detail on capacity to work or timeframes. Balance your information needs with respect for privacy.

Plan A Supportive Return To Work

For longer absences, agree a staged return or temporary modified duties where appropriate, and consider whether a fitness for work note is needed. Keep the focus on safety and success in the role, not the details of the condition itself.

Keep Good Records (Securely)

Record leave taken, evidence received, agreed adjustments and review dates. Store health information securely with limited access. Good records support continuity of care and reduce disputes later.

Review Your Documents And Processes

Make sure your core documents reflect today’s expectations and laws. Many employers bundle the key rules into a tailored staff handbook, supported by the right contract suite. This usually includes your Employment Contract templates, leave policy, performance and conduct procedures, and privacy practices. If you don’t have these in place, it’s much easier to set them up before a difficult situation arises.

Where Mental Health And Performance Intersect

Sometimes, ongoing performance or conduct issues surface alongside mental health concerns. You still need to manage performance - but do so fairly and with care. Ensure the employee understands expectations, consider adjustments, and follow a procedurally fair process. If you’re unsure where the lines sit, getting early advice can prevent missteps. You can also read our snapshot of Fair Work obligations regarding employee mental health for context.

What Legal Documents Should Your Business Have?

Clear, tailored documents make compliance easier and decisions simpler when someone needs time away for mental health reasons. Common inclusions are:

• Employment Contract: Sets out leave entitlements, how evidence may be requested, and expectations around communication during absence. Keep templates current for each category of staff, such as a core Employment Contract for full-time and part-time employees.
• Workplace Policies/Staff Handbook: Central place for leave rules, respectful workplace standards, WHS responsibilities, mental health support pathways and privacy practices. Many businesses capture these in a single, practical handbook so managers have one source of truth.
• Privacy Policy: If your business is covered by the APPs - or you choose to adopt best practice - set out how you collect, use and store personal and health information in your public-facing Privacy Policy and mirror that internally with procedure notes.
• Return-To-Work (RTW) Procedure: Explains when capacity information or medical clearance may be requested and how adjustments are considered and reviewed.
• Performance And Conduct Procedure: Helps you manage concerns fairly where performance issues arise, including how health information is considered and who is involved.

Not every workplace needs the same level of documentation, but most benefit from a clear contract set and a small number of practical policies that leaders can actually use day-to-day.

Risks If You Get It Wrong

Most employers want to do the right thing - and the law expects you to. The main risks of poor handling include:

• Adverse Action Or Unfair Dismissal Claims: Disciplining or dismissing an employee soon after they exercise a workplace right (such as taking paid personal leave) can trigger general protections claims under the Fair Work Act.
• Discrimination Complaints: Treating a worker unfavourably because of mental illness can lead to disability discrimination allegations under federal or state law.
• WHS Exposure: Failing to identify and manage psychosocial hazards can result in regulator attention, enforceable undertakings or penalties.
• Privacy Issues: Mishandling health information can damage trust and, where the APPs apply, lead to complaints or reportable data breaches.
• Culture And Productivity Impacts: Inconsistent processes, delays and poor communication erode morale and increase turnover - which is costly and disruptive.

The good news: a clear policy framework, trained managers and proportionate, respectful processes go a long way to minimising these risks.

Key Takeaways

• Personal/carer’s leave in Australia covers mental health conditions - treat mental health absences like any other illness where the employee is unfit for work.
• Full-time staff accrue 10 paid personal leave days per year (pro‑rata for part-time). Casuals don’t get paid personal leave for their own illness, but may access other entitlements or request unpaid leave by agreement.
• You can ask for reasonable evidence such as a medical certificate; you don’t need (and shouldn’t request) a diagnosis - focus on capacity and safety.
• WHS duties include managing psychosocial risks, and discrimination laws protect workers with mental illness - centre your decisions on capacity and reasonable adjustments.
• Handle health information confidentially. If APP‑regulated (or by choice), align your practices with a clear Privacy Policy and restrict access on a need‑to‑know basis.
• Clarity helps: use an up‑to‑date Employment Contract, evidence rules in a staff handbook and a simple return‑to‑work procedure so managers can act consistently.
• If you’re unsure - for example, when capacity, privacy and safety overlap - get advice early to support your team and protect your business.

If you would like a consultation on employer compliance around personal leave for mental health, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no‑obligations chat.