Mental health is a workplace issue as much as it is a personal one. If you employ staff, chances are you’ve already seen it play out in real life: an employee calls in and says they’re “not feeling up to it”, or they ask for a day to reset because they’re burnt out, anxious, or overwhelmed.
As an employer, you might want to support them (and that’s a good instinct) while also wondering what the legal position is. Can employees actually take a mental health day? Is it the same as sick leave? Do you have to pay it? Can you ask for a medical certificate? And what if you suspect it’s not genuine?
In this article, we’ll walk you through how “mental health days” fit within Australian workplace laws, what leave types might apply, what evidence you can request, and how to manage these requests in a way that’s both compliant and practical for your business.
What Is A “Mental Health Day”, Legally Speaking?
In Australia, “mental health day” isn’t a separate legal category of leave under the Fair Work Act 2009 (Cth). It’s a common, everyday term people use to describe taking time off because they’re not mentally well enough to work that day.
From a legal perspective, a mental health day will usually fall into one of these buckets:
- Paid personal/carer’s leave (often called sick leave) for permanent employees
- Unpaid personal/carer’s leave for casual employees in some circumstances
- Annual leave (if the employee chooses and you approve)
- Unpaid leave (by agreement)
- Other arrangements like flexible work, reduced hours, or a temporary change to duties
The key point is this: if an employee is unfit for work due to a mental health condition (even for a day), that can be a legitimate reason to access leave entitlements.
It also means you should treat mental health-related absences similarly to physical health-related absences. The legal tests generally focus on capacity for work and compliance with notice/evidence requirements, not whether the illness is “visible”.
Can An Employee Take A Mental Health Day As Personal/Carer’s Leave?
Often, yes.
Under the National Employment Standards (NES), permanent employees (full-time and part-time) are entitled to paid personal/carer’s leave when they are not fit for work because of a personal illness or injury. Mental health conditions can fall within “personal illness” for this purpose.
So, if your employee is experiencing anxiety, depression, stress-related symptoms, burnout, or another mental health issue that makes them unfit to work that day, they may be entitled to take paid personal leave (assuming they have a balance available and meet the requirements).
What About Casual Employees?
Casual employees generally don’t have paid personal leave entitlements under the NES. That said, casuals can still take time off (they just typically won’t be paid for it), and your award, enterprise agreement, or workplace policy may create additional rights or processes.
Even when leave isn’t paid, it’s still important to respond carefully and consistently. Managing mental health-related absences poorly can create legal risk (for example, adverse action claims or discrimination complaints) and can quickly damage workplace culture.
Does It Matter If It’s “Just Stress” Or “Burnout”?
Stress can be a normal part of work, but it can also become a genuine health issue. The practical question is whether the employee is unfit for work.
It may help to think of it this way: if the employee had a migraine, you wouldn’t debate whether it’s “serious enough” in the abstract. You would focus on whether they’re fit to work and whether they’ve followed your notice/evidence process.
It’s also worth keeping in mind that there are many good reasons for sick leave that don’t look the same from one person to another, and mental health is one of them.
Can An Employee Use Annual Leave Instead?
Sometimes an employee may prefer to use annual leave, especially if:
- they’ve run out of personal leave
- they don’t want to provide medical evidence
- they want a longer break for recovery
Annual leave is generally taken by agreement, and you can refuse a request in some circumstances if it’s reasonable to do so. However, if someone is genuinely unwell, annual leave isn’t always the best fit legally or practically.
If you’re unsure about refusal boundaries, refusing annual leave is a common issue employers should handle carefully.
What Evidence Can You Ask For (And When)?
This is where many employers feel stuck. You want to support your employee, but you also need to manage attendance, rostering, and potential misuse.
Under the Fair Work Act, an employer can request evidence that would satisfy a reasonable person that the employee is genuinely entitled to personal leave. The “usual” evidence is a medical certificate, but it’s not the only option.
When Is It Reasonable To Ask For A Medical Certificate?
It can be reasonable to ask for evidence for a mental health day in the same way you would for a physical illness. This might be particularly relevant if:
- the absence is frequent or follows a pattern (for example, always on Mondays or after rostering changes)
- the employee is taking leave adjacent to public holidays or annual leave
- your workplace policy requires evidence for certain leave periods
- the employee has already used a significant portion of their personal leave balance
That said, not every workplace requires evidence for every single day off. Many businesses set policy thresholds (for example, evidence required after 2 consecutive days, or where requested due to patterns).
If you’re reviewing your approach, it can be useful to understand how sick days without a certificate work in practice and how to set expectations clearly.
What Counts As Evidence For A Mental Health Day?
Evidence could include:
- a medical certificate from a GP
- a certificate or letter from a psychologist or other treating practitioner (depending on circumstances)
- a statutory declaration (in limited situations where appropriate)
What’s “acceptable” will depend on your workplace, any applicable award/enterprise agreement, and what a reasonable person would accept in the circumstances.
Do You Need To Know The Diagnosis?
Usually, no.
You can ask for evidence that supports the employee’s absence, but you generally don’t need (and often shouldn’t seek) detailed information about their diagnosis or treatment. Many medical certificates will simply say the employee is unfit for work for a period of time.
If your employee voluntarily discloses personal information, handle it carefully. Access should be limited to people who genuinely need to know to manage the workplace.
What If You Suspect The Employee Isn’t Being Genuine?
This is common, and it’s a situation where process matters. A few practical tips:
- Don’t jump to conclusions based on assumptions about mental health.
- Rely on your policy and apply it consistently to all types of illness.
- Request reasonable evidence if needed.
- Document what you do and why you do it.
If the issue becomes ongoing, it may become a performance management or conduct issue, but you should get advice before moving into disciplinary action. Mishandling it can create risk under general protections or discrimination laws.
What If They’ve Run Out Of Sick Leave?
Another common question is what happens when personal leave balances are low or exhausted, especially where mental health concerns are longer-term.
As a starting point:
- Paid personal leave accumulates for full-time and part-time employees.
- Unused personal leave is not paid out on termination (in most cases).
- Personal leave usually rolls over year to year for permanent employees.
Employees often ask about whether sick leave can build up over time, and does sick leave roll over is an important concept for both employers and employees to understand.
When an employee has no personal leave left, their options may include:
- taking annual leave (by agreement)
- taking unpaid leave (by agreement)
- requesting flexible work or a temporary adjustment to duties/hours
- accessing any other leave entitlements under an award, enterprise agreement, or contract
From an employer perspective, the most important thing is to avoid treating the situation purely as an attendance issue if there may be a health condition involved. You can still manage performance and operational needs, but you need to do it in a legally safe way.
If you’re dealing with longer-term absences or repeated absences, managing employee sick leave when entitlements run out can become a key HR and legal risk area, so it’s worth getting your approach right early.
Alternative Options: Annual Leave, Unpaid Leave, Flexible Arrangements
Sometimes, the best outcome for everyone isn’t a “yes/no” on a single day of personal leave. If the employee is struggling but still wants to stay engaged with work, or if the situation is more about prevention than immediate illness, you may want to consider alternatives.
Annual Leave
Annual leave can be a straightforward option where the employee is not necessarily “unfit for work” but needs time to recharge. It also lets employees plan ahead if they can see burnout coming.
As the employer, you can generally approve annual leave requests unless there are reasonable business grounds to refuse. If you do refuse, be clear and consistent, and consider whether there are other ways to support the employee (for example, approving different dates or offering a flexible day).
Unpaid Leave By Agreement
If the employee has no paid leave available (or wants to preserve it), unpaid leave by agreement can be an option. The key is that this should be documented clearly (even if it’s just an email confirmation) so everyone is on the same page about:
- the dates
- whether it’s paid or unpaid
- any expectations around contact/handovers
Flexible Working Arrangements
In some situations, the employee might not need a full day off, but instead:
- a later start time
- a shorter shift for a period
- working from home (if practical)
- a temporary change in duties
Flexible arrangements can be especially helpful where the mental health issue is linked to particular workplace stressors (for example, customer-facing duties, high-pressure deadlines, or conflict within a team).
If you do adjust duties or hours, it’s important to think through any award obligations, consultation requirements, and contract terms. If you’re unsure, it’s worth getting tailored advice before making changes that could be seen as a unilateral variation.
Employer Obligations: Safety, Privacy, Discrimination, And Reasonable Management
Even if the employee’s request is “just” one day off, mental health touches multiple legal duties for employers. The best approach is to manage it with a combination of empathy and a clear process.
Work Health And Safety (WHS) Duties
Employers have a duty (under WHS laws) to provide a safe work environment, so far as reasonably practicable. This includes psychological safety, not just physical safety.
That doesn’t mean you’re expected to diagnose or treat mental health conditions. But it does mean you should take reasonable steps to identify and manage psychosocial hazards where possible (for example, workload issues, bullying, harassment, fatigue, or unsafe work practices).
Privacy And Confidentiality
If an employee tells you they’re taking leave for mental health reasons, treat that information as sensitive and limit it to what you actually need to manage the workplace.
A practical approach many businesses adopt is:
- only HR / direct managers handle medical evidence
- roster changes are communicated without sharing the reason
- documents are stored securely and access is restricted
Discrimination And Adverse Action Risks
Mental health conditions can sometimes amount to a disability under anti-discrimination laws. There are also protections under the Fair Work Act that can apply if an employee experiences negative treatment because they exercised a workplace right (like taking personal leave).
That’s why it’s important to be careful about:
- how you communicate with the employee
- how you record the absence
- how you make decisions about hours, shifts, promotion, performance management, or termination
You can still manage genuine performance and attendance issues. The key is to do it lawfully, with procedural fairness, and without treating the employee adversely because of their illness or because they took leave.
Medical Clearances And Returning To Work
Sometimes an employee takes time off for mental health reasons and returns quickly. Other times, you may be dealing with a longer absence, or concerns about whether it’s safe for them to return to certain duties.
In those cases, you may be able to request a clearance before they return, but there are boundaries around when and how you do this. The question is usually whether the request is reasonable in the circumstances and linked to inherent requirements and safety.
If you’re navigating this, medical clearance to return to work is an area where having a clear process (and getting advice early) can prevent disputes.
Set Expectations In Your Policies And Employment Contracts
Many “mental health day” issues become harder than they need to be because the business doesn’t have clear written expectations. You can often avoid confusion by setting out:
- how employees should notify you of an absence
- when evidence is required
- who they should contact
- how you handle sensitive information
- your expectations around fitness for work and return to work
Having a well-drafted Employment Contract and consistent workplace policies can go a long way in keeping things fair, respectful, and compliant.
Key Takeaways
- A “mental health day” isn’t a separate legal leave type in Australia, but it commonly falls under personal/carer’s leave, annual leave, unpaid leave, or flexible work arrangements.
- Permanent employees can usually take paid personal leave if they are unfit for work due to a mental health condition, provided they follow notice requirements and can provide reasonable evidence if requested.
- It can be reasonable to request evidence (like a medical certificate), but you generally don’t need to know an employee’s diagnosis and should handle information sensitively.
- If an employee has run out of personal leave, options may include annual leave, unpaid leave by agreement, or temporary flexible arrangements.
- Employers should manage mental health-related absences consistently and carefully to reduce WHS, discrimination, and adverse action risks.
- Clear contracts and policies help set expectations around notification, evidence, and return-to-work processes, which can prevent misunderstandings and disputes.
If you’d like a consultation on managing mental health leave and policies in your workplace, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.
