How to use a statutory declaration as sick leave evidence

You are at home with a stomach bug, and the local GP cannot fit you in until Thursday. Your workplace policy says you need to provide evidence for the day you are taking off. Under the National Employment Standards, an employer may ask an employee for evidence that would satisfy a reasonable person that the leave was taken for a permitted reason, and a statutory declaration is one of the forms of evidence the Fair Work Ombudsman expressly lists as acceptable alongside medical certificates.

When the process works, you end up with a signed, witnessed statutory declaration on the approved form for your state or territory, submitted to your employer within the time your workplace allows. The exercise itself takes minutes. But it is more formal than most people assume. A statutory declaration is not just a signed letter, most adults cannot witness one, and a false statement in one is a criminal offence. Getting those details wrong means the declaration can be rejected and the day may go unpaid.

What you need before you start

Work through this list before you put pen to paper. Each item is a genuine prerequisite, and the first two are the ones people trip over:

• A leave reason the Fair Work Act covers: you were not fit for work because of a personal illness or injury, or you were providing care or support to an immediate family or household member with an illness, injury or unexpected emergency (s 97 of the Fair Work Act 2009 (Cth)).
• Notice given as soon as practicable: you told your employer you were taking leave and how long it would run. The notice can be given after the leave has started, but it must be given (s 107 of the Fair Work Act).
• A workplace that accepts statutory declarations: an award, enterprise agreement or workplace policy may specify what evidence is required and when. If it is silent, the evidence simply has to satisfy a reasonable person, and the Fair Work Ombudsman confirms that a statutory declaration can meet that standard.
• The correct form for your jurisdiction: the Commonwealth and each state and territory prescribe their own approved forms, and the witness lists differ between them.
• An authorised witness available: the declaration must be signed under the observation of a person authorised by law, either in person or by video link.
• Facts you can truthfully state: a false statement in a statutory declaration carries a penalty of up to four years' imprisonment (s 11 of the Statutory Declarations Act 1959 (Cth)).

Notice is the prerequisite people most often miss. The evidence step only arises if your employer asks for it, but notice is a separate, unconditional requirement, and an absence can fail the test on that ground alone. One other thing to check early: casual employees do not accrue paid personal leave, because the entitlement in s 96 of the Fair Work Act excludes periods of casual employment. Step 5 covers what that means in practice.

Prepare and lodge the declaration, step by step

The order below is the order the law and your workplace effectively impose. Follow it and the declaration will be in the right shape to be accepted.

Step 1: Check what your workplace requires

Start with your employment contract, the workplace policy, and any applicable award or enterprise agreement. Look for the rules on when evidence is needed, how soon you must notify a manager, how many days you can self-certify, and whether consecutive or patterned absences trigger a medical certificate requirement.

If the policy is silent, the default position is that an employer can ask for evidence even for a single day off, and the type of evidence requested must be reasonable in the circumstances. The Fair Work Ombudsman's guidance is that medical certificates and statutory declarations are both acceptable forms of evidence, and that the evidence only needs to convince a reasonable person that the leave was genuinely taken for a permitted reason. For a short, straightforward illness where a doctor's visit was not practicable, a statutory declaration will usually do the job.

Step 2: Get the approved form for your jurisdiction

A statutory declaration must be made in the approved form (s 9 of the Statutory Declarations Act 1959 (Cth)). That means using the current prescribed form, not a photocopy of a friend's, and not a generic template downloaded from anywhere:

• If the declaration is for a Commonwealth purpose, use the Commonwealth form, available from the Attorney-General's Department.
• For sick leave evidence in an Australian workplace, use the form prescribed in your state or territory, usually under an Oaths Act or equivalent legislation.
• The forms look similar, but the authorised witness lists and the layout of the witnessing panel differ, so a form valid in one jurisdiction may not be in another.

Using the wrong form or an outdated version is one of the most common rejection points in this whole process.

Step 3: Complete the declaration with the facts

The declaration asks for your full name, address and occupation, followed by the statement of facts. In plain language, state the dates you were unfit for work and a short description of why, for example "gastrointestinal illness and unable to perform my duties":

• State the dates clearly, including the day you returned if it matters.
• Keep the description factual and brief. You do not need to disclose private medical history, only enough to satisfy a reasonable person that the absence was genuine.
• Do not embellish. The declaration is a sworn document, and the statement you sign is that the contents are true and correct.

Since 2024 the Act has allowed technology neutral signing (s 7A), so an electronic form signed by electronic means can be valid if the method identifies you and shows your intention. The practical point is to use the form the way the form is designed to be used, and to fill in every field the witness panel requires.

Step 4: Sign it in front of an authorised witness

This is the step that makes the document what it is. Under s 9 of the Statutory Declarations Act, the declaration must be signed by you under the observation of a prescribed person, either in person or by video link, and the prescribed person must then sign it as well. You cannot sign in advance and have the witness "backdate" the observation.

Who counts as a prescribed person is set out in regulation 6 of the Statutory Declarations Regulations 2023 (Cth). The categories include:

• Legal practitioners enrolled on the roll of a Supreme Court or the High Court.
• People licensed or registered to practise in any of the 17 occupations listed in Schedule 1 to the regulations, which include pharmacists, nurses, medical practitioners, dentists, psychologists, physiotherapists and accountants.
• A further list of other persons, including commissioners for declarations, clerks of court, and bank officers with five or more years of continuous service.

The witness must be authorised for the jurisdiction whose form you are using. The state and territory lists overlap with the Commonwealth list but are not identical, so check the list that applies to your form before you rely on it.

There is also a fully digital route. The Act provides for declarations made on an approved online platform with identity verified through an approved identity service (s 9A), where the regulations require verification against at least two government-issued identity documents.

To get the witnessing right:

• Sign only when you are in front of the witness, in person or on a video link.
• Bring identification if the witness does not know you personally.
• Make sure the witness completes their section in full: name, qualification, signature and date.
• Keep the signed declaration safe until you submit it.

Step 5: Submit it on time and keep a copy

Provide the declaration within the timeframe your policy sets, which is often the next working day or within a few days of returning. If your employer asks for evidence and you do not provide it, the Fair Work Ombudsman's guidance is that you may not be entitled to be paid for the leave. Keep a copy for your own records in case of a dispute later.

For casual employees the picture is different. Casual employment does not count towards the paid personal leave accrual in s 96 of the Fair Work Act, so a casual who misses a shift through illness has no paid sick leave to draw on. A casual can take unpaid carer's leave in the circumstances set out in s 103, and an employer can still reasonably ask for evidence, including a statutory declaration, for a missed shift.

Step 6: Handle follow-ups and the return to work

Submitting the declaration is not always the end of it. For absences beyond your policy's threshold, or where there is a pattern of absences, it is reasonable for an employer to ask for a medical certificate instead. In safety-critical roles, an employer may require a medical clearance before you return.

There are also protections you should know about. An employer must not dismiss an employee because of a temporary absence due to illness or injury of a kind prescribed by the regulations (s 352 of the Fair Work Act). Concerns about absence patterns should be raised through performance and capability processes, not by rejecting legitimate evidence or applying evidence rules inconsistently.

Where the process stalls

These are the points where otherwise valid declarations fall over, based on how the rules actually operate:

• Signing before the witness arrives: A declaration signed without the witness observing is not a valid statutory declaration, and the employer is entitled to reject it.
• Using the wrong form or an outdated version: The approved form changes, and the witness lists change with it. Always download the current form for your jurisdiction.
• Giving too much or too little detail: Too much private medical detail creates privacy problems for everyone; too little fails the reasonable person test. A one or two line description of the illness and the dates is usually right.
• Missing the notice requirement: Evidence without notice does not complete the requirements of s 107, so make sure the notification happened even if the employer never asked for proof.
• An unauthorised witness: A colleague, family member or landlord cannot witness the declaration unless they are on the authorised list for that jurisdiction.

When to get legal help

For most one or two day absences, a statutory declaration is a routine document and a lawyer is not needed. Professional help becomes worthwhile when the situation stops being routine:

• An award, enterprise agreement or policy clause on evidence is unclear, or a manager is applying it inconsistently.
• An employer has rejected a statutory declaration and is refusing to pay for the leave.
• The absence is long, repeated, or coincides with a performance or disciplinary process.
• There are concerns about dismissal, adverse action, or an employer demanding more information than the law allows.

A legal practitioner can review the relevant policy and award terms, advise whether a statutory declaration is reasonable evidence in the specific circumstances, and if a dispute has already arisen, help respond to it before it escalates to a general protections claim or the Fair Work Commission.

The witnessing step decides whether the declaration is accepted

The single thing most likely to determine whether this process succeeds is the witnessing step. The facts and the timing can be corrected, but a declaration that is not in the approved form, or not signed under the observation of an authorised witness, is invalid from the start, and no amount of explanation will make it acceptable evidence. That is why the checklist above keeps returning to the same point: use the current form for your jurisdiction, sign it in front of a person on the authorised list, and make sure that person signs too.

The rest of the framework is straightforward. The Fair Work Act sets one test: evidence that would satisfy a reasonable person that the leave was taken for a permitted reason. A statutory declaration meets that test for short, straightforward absences where a medical certificate is not practicable. Check what your workplace requires, use the approved form, state the facts truthfully, sign in front of an authorised witness, and submit on time. Employers should apply evidence rules consistently and proportionately, respect the privacy of the health information they receive, and remember that a false declaration carries a penalty of up to four years' imprisonment.