Can Employees Use A Statutory Declaration Instead Of A Medical Certificate?

When one of your team calls in sick, the next question often isn’t about rostering - it’s about evidence.

Many small business owners ask the same thing: can an employee provide a stat dec instead of a medical certificate?

The short answer is: sometimes, yes - but it depends on your workplace arrangements, what “evidence” is required in the circumstances, and whether a statutory declaration is actually accepted as evidence for that type of leave under the relevant rules that apply to your workplace.

Below, we’ll walk you through how statutory declarations (stat decs) fit into sick leave evidence rules in Australia, the practical risks to watch out for, and how to set up a process that’s fair for your team and protects your business.

When Can An Employee Provide A Stat Dec Instead Of A Medical Certificate?

In Australia, employees who take paid personal/carer’s leave (often called “sick leave”) can be required to provide evidence that would satisfy a reasonable person that the leave was taken for the allowed reason (such as illness or injury).

Importantly, the law generally talks about evidence - not specifically a medical certificate every time.

What Counts As “Evidence” Of Sick Leave?

Common types of evidence include:

• Medical certificate from a registered health practitioner
• Statutory declaration stating the employee was unfit for work due to illness/injury (or needed to provide care/support)
• Other documentation that is accepted under an applicable award, enterprise agreement, or workplace policy (less common, but it can happen)

So yes - in many workplaces, a statutory declaration can be used as evidence.

If you’re looking for a practical overview of how these documents are usually used in sick leave situations, it can help to understand what goes into a statutory declaration for sick leave and what information is commonly included.

What Makes A Stat Dec Valid?

A stat dec isn’t just a written note from the employee. Generally, it must be:

• in the correct form (Commonwealth or relevant State/Territory form, depending on the context)
• signed by the employee (the declarant)
• witnessed by an authorised witness (for example, a Justice of the Peace (JP), lawyer, pharmacist, etc., depending on the jurisdiction)
• truthful - there are penalties for making a false statutory declaration

From an employer’s perspective, the “witnessed” element matters because it adds a level of formality and accountability that a regular email or text message doesn’t have.

Do You Have To Accept A Stat Dec Every Time?

Not necessarily.

Whether you must accept a stat dec instead of a medical certificate often depends on:

• what the Fair Work Act requires (evidence that would satisfy a reasonable person)
• any requirements in a modern award or enterprise agreement (some instruments may specify when a medical certificate is required, or set minimum evidence standards)
• your employment contracts and workplace policies (as long as they don’t conflict with legal minimums or any applicable award/enterprise agreement)
• the circumstances (for example, frequency of absences, length of absence, patterns, or whether the evidence appears unreliable)

It’s also worth noting that employees can be absent for legitimate reasons and still struggle to obtain a same-day medical appointment. That’s why many employers take a practical approach and allow a stat dec in some situations - especially for short, infrequent absences - provided it aligns with any award or agreement requirements.

What’s The Legal Rule For Sick Leave Evidence (And Why “Reasonable” Matters)?

As a small business owner, you’re balancing two things at the same time:

• supporting your team when they’re genuinely unwell, and
• protecting your business from abuse of leave entitlements and operational disruption.

The legal framework aims to strike a similar balance by using a “reasonableness” test.

You Can Ask For Evidence - But It Should Be Reasonable

In practice, many employers set rules such as:

• evidence required for any sick day, or
• evidence required after 1 day, or
• evidence required for 2+ consecutive days, or
• evidence required when sick leave falls next to weekends/public holidays, or on particularly busy days.

Some of these approaches may be permitted, but it will depend on your award/enterprise agreement and whether the approach is reasonable in the circumstances. The more strict your approach is, the more important it becomes that it’s applied consistently and is justifiable in your workplace context.

Employees will often ask about sick days without a certificate when they can’t access a doctor quickly. Even if you choose to require evidence, having a clear and workable alternative (like a stat dec, where permitted) can reduce disputes and confusion.

Awards And Agreements Can Change The Detail

Modern awards and enterprise agreements can include specific rules about evidence, notice requirements, and when you can request proof.

That means two businesses in the same suburb can have different sick leave evidence rules depending on the award coverage for the role, or whether there’s an enterprise agreement in place.

If you’re not sure which award applies or what evidence rules are included, it’s worth getting advice early - these details often become important when you’re managing attendance issues or a potential performance process.

How To Set A Clear Workplace Rule On “Stat Dec Instead Of Medical Certificate”

The biggest compliance risk we see with sick leave evidence isn’t the document itself - it’s inconsistency.

If you accept a stat dec for one employee but reject it for another without a fair reason, you can create workplace conflict and (in some cases) legal risk.

Decide Your Approach And Put It In Writing

Many small businesses set a policy along these lines (subject to any award/enterprise agreement requirements):

• For 1 day of personal leave: evidence may be a medical certificate or a statutory declaration.
• For 2+ consecutive days: medical certificate required (unless there are exceptional circumstances, and if the applicable award/enterprise agreement allows an alternative).
• For frequent absences or concerning patterns: medical certificate required.

What matters is that your rule is:

• clear (your managers and staff understand it)
• consistent (applied across the team)
• lawful (not undermining minimum employment entitlements, and aligned with any applicable award or enterprise agreement)

This is a good point to check whether your Employment Contract and any policies you issue actually match what you do in day-to-day operations (and align with the award/enterprise agreement, if applicable).

Be Specific About What You Need In The Stat Dec

If you are going to accept stat decs, it helps to specify what the declaration should cover, for example:

• the date(s) the employee was unfit for work
• whether they were ill/injured or caring for someone (without requiring excessive personal medical detail)
• confirmation that the information is true and correct
• the witness details and signature

A stat dec should not become an invitation for you to request confidential medical details. As an employer, you generally only need enough information to confirm the leave is legitimate and to manage workplace safety and capacity.

Apply The Same Standard To Casuals (Where Relevant)

Casuals generally don’t accrue paid personal leave, but they can still be absent due to illness. You can still set reasonable expectations about notice and (where appropriate) evidence for absences for operational reasons - however, any evidence rules should be applied carefully and consistently, and shouldn’t be framed as “sick leave” compliance in the same way as paid personal/carer’s leave for permanent employees.

If you’re managing a mixed workforce (full-time, part-time, casual), make sure your absence and evidence process is tailored to each category and accurately reflected in your documentation and onboarding.

When It’s Reasonable To Ask For More Than A Stat Dec

Even if you allow a stat dec as evidence in some cases, there are situations where it can be reasonable to ask for additional medical evidence or a different type of document - particularly where your award/enterprise agreement requires it, or where the circumstances justify a higher level of assurance.

1. Frequent Or Patterned Absences

If an employee regularly takes personal leave on Mondays, Fridays, or immediately before/after annual leave, you may decide that a medical certificate is required going forward (as long as this aligns with any applicable award/enterprise agreement and is applied consistently).

Be careful here: patterns can be a red flag, but they can also have legitimate causes. A consistent process (and a calm conversation) is usually the best first step.

2. Longer Periods Of Leave Or Ongoing Conditions

If someone is away for an extended period or has recurring absences connected to an ongoing condition, you may need more structured information - not to “police” their health, but to manage workplace capacity and safety, and to consider whether any adjustments are needed.

In some scenarios, you may be able to request a fitness for work or clearance before they return, especially if safety is an issue. The key is that your request should be reasonable and proportionate to the role and risks involved.

For example, a warehouse role involving heavy lifting may justify a different approach than an office-based role. If you want to understand where the line generally sits, medical clearance to return to work is a helpful concept to have clear internally before issues arise.

3. High-Risk Workplaces Or Safety-Sensitive Roles

If your staff work with machinery, drive vehicles, handle vulnerable clients, or work in environments with strict WHS obligations, you may need stronger evidence that they’re fit to return safely.

This is less about mistrust and more about ensuring you meet your duty of care.

4. Surgery Or Planned Medical Absence

Planned absences (like elective surgery) often need a different process than a last-minute sick day, especially if the employee will be away for a while or needs restrictions when they return.

Having a consistent evidence and communication pathway can make these situations much easier to manage - including what you can ask for, what you should document, and how to plan coverage. If this comes up in your workplace, managing sick leave requests for elective surgery is a common area where employers benefit from setting expectations early.

Practical Tips To Manage Stat Decs Without Creating Conflict

Even if you’re comfortable accepting a stat dec as evidence, you still need a process that works operationally.

Set A Simple Submission Process

Make it easy for employees to comply. For example:

• Tell staff who to email their evidence to (manager, HR inbox, payroll)
• Set a timeframe (for example, within 24-48 hours of returning to work)
• Confirm whether a scanned copy is acceptable

Clear processes reduce arguments and awkward back-and-forth.

Train Managers To Respond Consistently

Most problems here aren’t caused by a malicious employee - they’re caused by inconsistent manager responses like:

• one manager accepting a stat dec and another refusing it
• a manager demanding “diagnosis details” (too much)
• a manager making comments that could be interpreted as discouraging leave

Small businesses can be especially vulnerable to this because policies often live “in someone’s head” rather than in writing.

Keep Records (But Respect Privacy)

You should keep a record of leave requests and evidence received, but you should also ensure medical information is handled appropriately.

A practical approach is to store sick leave evidence separately from general personnel documents, with access limited to people who genuinely need it (for example, the owner, payroll, or HR).

Know When It’s A Performance Issue (Not A Paperwork Issue)

If attendance becomes a genuine concern, focusing purely on whether the employee provided a stat dec or a medical certificate may miss the bigger picture.

In those cases, you may need to shift into a structured performance management conversation: expectations, impact on the business, and what support is available.

If you’re heading toward disciplinary steps, make sure you’re following a fair process and documenting decisions properly.

Key Takeaways

• An employee can sometimes provide a statutory declaration as evidence instead of a medical certificate, because workplace laws generally require “evidence” that would satisfy a reasonable person - not always a medical certificate.
• Whether you must accept a stat dec depends on your award/enterprise agreement, employment contract terms, workplace policies, and the circumstances of the absence (and some awards/agreements may specify when a medical certificate is required).
• To protect your business, set a clear rule on when stat decs are accepted and when a medical certificate is required, and apply it consistently across your team.
• It can be reasonable to ask for stronger medical evidence for frequent absences, extended leave, safety-sensitive roles, or return-to-work situations.
• Good processes (clear submission steps, manager training, privacy-aware record-keeping) reduce disputes and help you manage sick leave fairly and lawfully.

If you’d like help setting up your sick leave evidence rules, reviewing your workplace policies, or updating your Employment Contract documentation, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.