Doctor's Certificate for Work in Australia: What It Needs to Include

The Fair Work Ombudsman is clear about this, and most workplace tension on certificates comes from people not knowing the rules.

What your employer can ask for:

• Evidence of incapacity for paid personal or carer's leave — typically a doctor's certificate or, in some cases, a statutory declaration
• A certificate covering each absence, with timing rules set by your enterprise agreement or employment contract — some require a certificate from day one, others from day two onwards
• A return-to-work or fitness-for-work certificate before resuming duties after injury, illness, or surgery, where the workplace has a duty of care or safety reason

What your employer cannot do:

• Demand a specific diagnosis on the certificate — your medical condition is sensitive personal information protected under the Privacy Act 1988 and the Australian Privacy Principles
• Refuse to accept a valid certificate from an AHPRA-registered practitioner because it was issued via telehealth — the Medical Board of Australia's telehealth guidelines specifically allow this
• Insist you see a particular practitioner for a sick certificate (workplace medicals for high-risk roles are a different category)

If a workplace pushes back on a valid certificate, citing the Fair Work Ombudsman position usually settles it.

A valid Australian medical certificate, online or in-person, must contain:

• The patient's full name
• The date the certificate is issued
• The period you are unfit for work — either a date range or "X days from today"
• The practitioner's full name, AHPRA registration number, and signature
• Practice or clinic identifying details (name, address, contact)

The certificate is not required to state your diagnosis. Under the Australian Medical Association's guidance and the Privacy Act 1988, a certificate confirms unfitness for work; it doesn't have to explain the underlying condition. "Suffering from a medical condition" is sufficient phrasing. Some certificates do include a diagnosis if the patient consents; many don't.

If a certificate is missing any of the required elements above, an employer is within their rights to ask for one that meets the standard. If it's all there but the diagnosis is omitted, that's correct and complete.

Most workplace situations are covered by a small number of certificate types.

Sick leave certificate. The standard "unfit for work" certificate for short illness — colds, flu, gastro, headaches, back pain, mental health days. Issued for the period of incapacity, usually a few days.

Carer's leave certificate. Confirms you're needed to care for an immediate family or household member who's unwell. The certificate names the period of care, not the person being cared for. Used for sick children, partners, parents.

Fitness-for-work / return-to-work certificate. Issued after injury, illness, or surgery to confirm you can return to your usual duties. May follow a period of unfitness with a "fit to return on [date]" line. Sometimes paired with a treating-specialist letter for complex cases.

Light duties / modified-duties certificate. When you can return to work but with restrictions — no heavy lifting, no extended standing, reduced hours, no driving. Specifies what's restricted, for how long, and any review date.

Pre-employment medical clearance. Some employers require this before you start, particularly for safety-sensitive industries. Typically more detailed than a regular certificate and may include screening tests appropriate to the role.

If you're returning to a high-risk role — aviation, mining, rail, commercial driving, emergency services — your fitness-for-duty assessment may need to be done in person or by a designated occupational health provider. A general-practice telehealth certificate isn't always enough for those settings. Ask your employer or HR if unsure.