How to Make a Medical Negligence Claim in WA

If you have been harmed by medical care in Western Australia, the most consistent thing we hear from people in your position is uncertainty. You may not be sure whether what happened was negligent or simply an unlucky outcome. You may be questioning yourself, the practitioners who treated you, or the path that led you here. None of that hesitation is unusual — medical negligence is rarely obvious from the outside, and patients are not expected to understand it without help.

This guide is for people in WA who suspect their medical care fell below the standard they were entitled to expect. It explains how WA medical negligence law works, what needs to be proven, the time limits that apply, and the types of compensation that may be available. Because medical negligence is governed at a state level in Australia, this guide focuses specifically on WA.

Medical negligence in Western Australia is governed primarily by the Civil Liability Act 2002 (WA), the common law of negligence, and the Limitation Act 2005 (WA). Together, these set out when a doctor, nurse, hospital, or specialist can be held responsible for harm caused by substandard care.

The standard expected of a WA health professional is that of a reasonably competent practitioner in their field. The law does not require perfection — it requires reasonable, competent care. That distinction is important, because a poor outcome alone does not establish negligence. Three concepts get confused often, and they are worth separating clearly:

• A poor outcome — a result that is unwelcome but where the treatment provided was reasonable and competent. Not negligence on its own.
• A known complication — an adverse event that is a recognised risk of a procedure, where you were properly informed and the care met the expected standard. Generally not negligence.
• Negligent care — where the practitioner failed to meet the standard of a reasonably competent peer, and that failure caused harm. This is what gives rise to a claim.

Many people who experience negligent care second-guess themselves. They wonder whether they are being unreasonable, or whether the outcome was simply bad luck. An independent medical opinion is the only way to test those assumptions properly — and arranging that is part of what your Perth medical negligence lawyer does.

Common Medical Negligence Examples

In Western Australia, the most common types of medical negligence claims include:

• Misdiagnosis or delayed diagnosis — including missed cancer, delayed identification of cardiac events, infections, or fractures. Read more about misdiagnosis claims.
• Surgical errors — wrong-site surgery, retained instruments, nerve damage, or procedures performed without proper indication. See our overview of surgical error claims.
• Medication errors — incorrect medication, wrong dosage, dangerous interactions, or failure to review prescriptions.
• Birth injuries — preventable harm to mother or baby during pregnancy, labour, or delivery, including failure to recognise foetal distress. Learn more about birth injury claims.
• Failure to refer — when a GP or treating clinician should have referred you to a specialist and did not.
• Failure to monitor — inadequate post-operative care, missed observations, or failure to act on test results.
• Failure to warn or absence of informed consent — not advising you of material risks before a procedure. See our guide on failure to warn.
• Dental negligence — including nerve injury, failed implants, undiagnosed infections, or unnecessary procedures. Read more on dental negligence claims.
• Cosmetic surgery negligence — botched cosmetic procedures, undisclosed risks, or substandard aftercare. See cosmetic surgery negligence for more information.

What Does “Failure to Warn” and “Informed Consent” Mean?

Patients regularly assume that signing a consent form rules out a claim. It does not. Consent forms record agreement to a procedure — they do not absolve a practitioner of negligent treatment, and they do not waive your right to be properly informed of risks beforehand.

Informed consent has a specific legal meaning. Under WA law, a doctor has a duty to warn you of any material risk of a proposed treatment. A risk is material if a reasonable person in your position would consider it significant, or if the doctor knew (or ought to have known) you would consider it significant. Failure to warn arises where this duty is breached. If a complication occurs that you were never told about, and you would have refused or postponed the procedure had you known, you may have a claim — even if you signed the consent form.

Consent forms do not excuse negligent treatment, and they do not waive your right to make decisions based on accurate information.

Medical negligence claims in WA can be brought by the injured patient, by a family member or dependant in some circumstances, or by the estate of a deceased patient where negligent care contributed to their death.

To succeed, four legal elements need to be established:

1. Duty of care — the practitioner or institution owed you a duty to provide reasonable care.
2. Breach — the care provided fell below the standard of a reasonably competent peer.
3. Causation — the breach caused or materially contributed to your injury.
4. Harm or damage — you suffered an injury, loss, or damage as a result.

What needs to be proven?

In practical terms, you need to show that a competent practitioner in the same field would have done something differently — and that this difference would have prevented or reduced your injury. This is not something patients can establish on their own.

Section 5PB of the Civil Liability Act 2002 (WA) provides that a practitioner generally has a defence if their conduct was widely accepted as competent by peer professional opinion. As a result, WA medical negligence claims usually turn on independent expert evidence — written assessments by specialists in the same field who can speak to whether the treatment met the expected standard.

This is also why patients feel uncertain. The treating team has the medical expertise — and they are the ones whose conduct is in question. Independent experts, organised by your lawyer, are how the law tests what really happened.

Evidence That Can Support a Claim

Strong claims are built on records. The kinds of evidence usually needed in WA medical negligence matters include:

• Medical records — GP notes, specialist consultations, referral letters, and diagnostic reports.
• Hospital notes — admission records, observation charts, operating reports, anaesthetic records, and discharge summaries.
• Test results and imaging — pathology, scans, and reports documenting your condition before and after the relevant care.
• Referral letters — communications between practitioners that show what was known, when, and what action was taken.
• Bills and receipts — costs for treatment, medications, rehabilitation, and out-of-pocket expenses.
• Employment and income records — to demonstrate financial loss caused by your injury.
• Care and assistance needs — evidence of help required from family members or paid carers.

If you do not currently hold these records, you do not need to chase them yourself. Your Perth medical negligence lawyer can request them from public hospitals (such as Sir Charles Gairdner Hospital, Royal Perth Hospital, Fiona Stanley Hospital), private hospitals, GPs, and specialists. Hospitals are required to release records to authorised representatives.

Common Misconceptions About Eligibility

Many people rule themselves out of a claim before getting advice. The most common reasons — and why they are usually wrong — include:

• “I signed a consent form, so I can’t claim.” Consent forms do not protect against negligent treatment or failure to warn of material risks.
• “I don’t want to ruin my doctor.” Medical negligence claims are met from professional indemnity insurance, not the practitioner personally.
• “It’s been too long.” WA’s discoverability rule and other exceptions may extend the period in which you can claim.
• “I can’t afford a lawyer.” LHD offers no win, no fee for medical negligence claims, meaning there is no upfront cost.
• “It might just be bad luck.” That is exactly what an independent medical opinion is designed to test. You are not expected to know.

Liability in a WA claim depends on who provided the care, where it occurred, and how the surrounding systems and supervision operated. Multiple parties can be liable in the same matter.

• Doctors — including GPs, surgeons, and specialists in private practice. Claims are usually handled by the doctor’s medical indemnity insurer.
• Nurses and midwives — claims often involve hospital employers under vicarious liability.
• Hospitals — both public and private hospitals owe a non-delegable duty of care for patients in their facilities. Read more about hospital negligence claims.
• Specialists and clinics — including diagnostic centres, day surgeries, and private specialist practices.

Can You Sue a Hospital for Negligence in WA?

Yes. Hospitals in Western Australia can be sued in their own right where they have failed to provide adequate systems, staffing, or supervision.

In WA public hospitals, claims are generally directed at the State of Western Australia, acting through the relevant Health Service Provider (such as the North Metropolitan Health Service, South Metropolitan Health Service, East Metropolitan Health Service, WA Country Health Service, or Child and Adolescent Health Service). In private hospitals, the operator holds its own indemnity. Where a doctor was treating you in a private hospital as a visiting medical officer, responsibility may sit with the doctor’s own insurer rather than the hospital. Identifying the correct defendants is one of the first things your lawyer addresses.

Time limits in WA medical negligence claims are set out in the Limitation Act 2005 (WA). They are strict, but they include important exceptions and they are not always as straightforward as they look.

The general rule is that you have 3 years to commence proceedings. The clock starts from the date the cause of action accrued — but where the injury was not discoverable at that time, the limitation period generally runs from the date you knew, or ought reasonably to have known, that you suffered an injury caused by the act or omission of another person, and that the injury was sufficiently serious to justify bringing a claim. This is the discoverability rule and it is critical in medical negligence, where the link between treatment and harm often only becomes clear months or years later.

Separately, WA imposes a long-stop limitation of 12 years from the act or omission that caused the harm. After that point, a claim is generally barred — even if the injury was not discoverable within that period.

There are exceptions:

• Minors — special rules apply for children injured by medical negligence (including birth injuries). Time generally does not begin to run in the same way as for adults, and parents can bring claims on a child’s behalf.
• Disability — where a person lacks legal capacity due to mental incapacity or other disability, time limits may be extended.
• Delayed recovery or diagnosis — the discoverability rule was designed precisely for situations where injuries are only recognised later.

If you suspect you may be close to a deadline, the safest step is to get advice quickly. A short phone call can clarify where you stand.

Compensation cannot reverse what has happened. What it does is recognise the impact of medical negligence — financial, physical, and personal — and help you and your family rebuild what you can. The amount depends on the severity of your injury, its impact on your life, your age, your earnings, and the supporting evidence.

In serious cases — including birth injuries and major surgical complications — compensation can include lifetime care plans, future medical needs, and lost earning capacity over many decades. These calculations involve medico-legal experts and are tailored to your specific circumstances.

Some things can be handled alone. Medical negligence rarely is. The combination of complex medical evidence, professional defendants represented by experienced insurers, strict legal tests, and time-sensitive procedures makes self-representation extremely difficult. Speaking to a lawyer early helps in concrete ways:

• Records can be obtained promptly while they are still complete.
• Independent specialists can be engaged in the appropriate field to assess the merits of your claim.
• Negotiations and correspondence with hospitals or insurers are handled professionally on your behalf.
• Time limits are tracked carefully so deadlines are not missed.
• You are kept informed throughout — without being expected to navigate legal procedure unaided.

LHD Lawyers’ Perth medical negligence team supports clients across Western Australia with claims against doctors, hospitals, specialists, and clinics. We offer no win, no fee for medical negligence claims in WA, meaning there is no upfront cost to seeking advice. Any legal costs will be explained clearly before you proceed.

Every claim is different, and having the right support locally can make a real difference. Our teams across Western Australia are here to help:

• Perth
• Albany
• Bunbury
• Geraldton
• Joondalup
• Kalgoorlie
• Mandurah