Person Responsible for Medical Consent in NSW

When a parent in NSW loses the ability to consent to medical treatment — after a stroke, a severe fall, or as dementia progresses — someone needs legal authority to say yes or no to procedures on their behalf. NSW handles this through the "person responsible" hierarchy under the Guardianship Act 1987, and it catches families off guard because the rules are more rigid than most people expect.

The NSW Person Responsible Hierarchy

Where no guardian or enduring guardian with the relevant medical function is in place, the Guardianship Act 1987 provides a statutory ranking of who can consent to medical and dental treatment on behalf of a person who lacks capacity:

1. A guardian appointed by NCAT with a specific healthcare function — if the tribunal has already made an order, that guardian has priority over everyone else.
2. The person's enduring guardian — someone appointed under an Appointment of Enduring Guardian document, provided the appointment gives them the function of consenting to medical treatment.
3. The spouse or de facto partner (including same-sex partners) — but only if the relationship is close and continuing. A spouse who is separated or estranged doesn't qualify.
4. A carer — an unpaid person who provides regular personal care and support (not a paid aged-care worker). This is typically an adult child who has been the primary hands-on caregiver.
5. A close friend or relative — someone who maintains a close personal relationship and takes a personal interest in the person's welfare. Other adult children, siblings, or a close family friend can qualify here.

The hierarchy is strict. A doctor must ask the highest-ranking available person on the list. An adult child who isn't the primary carer can't consent if the parent's spouse is available and willing — even if the child has been managing every other aspect of the parent's care.

What the Person Responsible Can and Cannot Consent To

The person responsible can consent to routine medical and dental treatment that the treating doctor considers necessary. This covers most hospital procedures, tests, medications, and standard treatments.

But there are hard limits. The person responsible cannot consent to:

• Special treatment — any medical procedure that is primarily for the purpose of another person's benefit (such as tissue donation), or treatment involving regulated experimental procedures.
• Major treatment where the patient objects — if the patient is actively resisting or objecting to the treatment, even if they lack the legal capacity to give informed consent, the person responsible cannot override that objection without a specific NCAT order.

For major surgery or any treatment where there's a dispute between family members about what should happen, the treating hospital will often escalate to NCAT's Guardianship Division rather than relying on the person responsible's consent alone.

Where the Enduring Guardian Fits

An Appointment of Enduring Guardian is the document that lets a parent in NSW choose who they want making personal and medical decisions for them — rather than leaving it to the statutory hierarchy. The enduring guardian jumps to position 2 in the ranking, above a spouse or de facto partner.

This matters in several common situations:

• The parent's spouse has their own health issues and may not be able to make complex medical decisions. An enduring guardian appointment lets the parent designate an adult child instead.
• Blended families where the parent's current partner and biological children disagree about care. Without an enduring guardian, the spouse has priority. With one, the parent can ensure their chosen person makes the call.
• The parent is closer to one child than others. The hierarchy ranks carers above other relatives, but in a family where multiple children share caregiving, the ranking can become ambiguous. An enduring guardian removes that ambiguity.

The enduring guardian is a completely separate document from the EPOA. A financial EPOA lets someone manage bank accounts and property. An enduring guardian lets someone consent to medical treatment, choose accommodation, and make lifestyle decisions. Families who set up only the financial EPOA leave healthcare consent in the hands of the statutory hierarchy.

The Emergency Exception

In a genuine medical emergency where the patient's life is at risk or they'll suffer serious damage from delay, a doctor in NSW can proceed with treatment without consent from anyone. This emergency doctrine exists specifically so that hospitals don't need to wait for a person responsible to be located before treating a heart attack or stopping a haemorrhage.

But the emergency exception ends the moment the immediate crisis passes. For ongoing treatment, rehabilitation decisions, and especially aged-care placement, someone in the hierarchy must consent — and if nobody is available or family members are in conflict, the hospital will refer the matter to NCAT.

Setting Up the Right Documents Before a Crisis

The person responsible hierarchy is a safety net, not a plan. It works when there's a clear ranking and no family disagreement. It fails when spouses are separated, when multiple children each believe they should decide, or when the treatment decision is contentious.

The Enduring Power of Attorney and Guardianship toolkit covers both the financial EPOA and the Appointment of Enduring Guardian for NSW, with the witnessing requirements and prescribed-witness certificate explained step by step. Setting up both documents while your parent has capacity puts the person they trust in charge — rather than leaving it to a ranking they may never have heard of.

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