Common Advance Care Directive Mistakes in NSW and How to Avoid Them

Mistake 1: Vague Language That Doctors Can Legally Ignore

The most damaging mistake is writing instructions that sound meaningful but lack clinical precision. Phrases like "no heroic measures," "let me die naturally," or "I want to die peacefully" appear in thousands of home-drafted directives across NSW — and they are functionally useless.

Under NSW common law, an Advance Care Directive is only enforceable when it contains clear, specific, and unambiguous instructions that directly apply to the clinical situation at hand. The Supreme Court established this principle in Hunter and New England Area Health Service v A [2009] NSWSC 761: if a directive does not clearly address the treatment being proposed, the treating clinician has no obligation to follow it.

"No heroic measures" does not tell an ICU doctor whether you refuse cardiopulmonary resuscitation, mechanical ventilation, dialysis, blood transfusion, or all of them. A doctor faced with that kind of ambiguity is legally protected in administering life-saving treatment while they seek emergency clarification — potentially from the Supreme Court itself.

The fix: name specific treatments and specific clinical scenarios. "I refuse cardiopulmonary resuscitation in any circumstance" is enforceable. "If I am diagnosed with an irreversible condition that will result in death within 12 months, I refuse mechanical ventilation, artificial nutrition via nasogastric or PEG tube, and intravenous hydration" gives the treating team clear instructions they are bound to respect.

Mistake 2: Thinking the ACD Appoints a Decision-Maker

NSW separates treatment instructions from decision-maker appointments more sharply than any other Australian state. Your Advance Care Directive records your treatment preferences. It does not — and cannot — appoint someone to make healthcare decisions on your behalf.

If you want to nominate a person to make medical, lifestyle, and accommodation decisions when you lose capacity, you need a separate statutory instrument: an Appointment of Enduring Guardian under the Guardianship Act 1987. And if you want someone to manage your financial affairs, you need an Enduring Power of Attorney under the Powers of Attorney Act 2003.

Many people draft a detailed ACD, name a family member in it as "my healthcare proxy," and assume that person has legal authority. They do not. Without a formal Enduring Guardian appointment — executed with the correct statutory form and witnessed by a prescribed witness — your named person has no more legal standing than any other family member in the "Person Responsible" hierarchy.

Mistake 3: Using a Justice of the Peace as Your Witness

This mistake costs families thousands of dollars in legal fees to fix. A Justice of the Peace (JP) can witness many legal documents in NSW, but they cannot witness an Enduring Guardian appointment or an Enduring Power of Attorney.

The Guardianship Act 1987 and the Powers of Attorney Act 2003 restrict witnessing to "prescribed witnesses" only:

• An Australian legal practitioner with a current practising certificate
• A Registrar of an NSW Local Court
• An approved employee of the NSW Trustee & Guardian or the Public Guardian

A document witnessed by a JP is invalid. If you present a JP-witnessed Enduring Guardian appointment to a hospital when your parent is in the ICU, the hospital will not recognise your authority. You will be directed to NCAT for an emergency guardianship order — a process that takes weeks to months.

Your ACD, as a common law document, technically does not require any witness to be valid. But having it witnessed by a solicitor or another credible witness significantly strengthens its evidentiary weight if your directive is ever challenged.

Mistake 4: Not Distributing the Document

An ACD stored in a home safe or a solicitor's strongroom is invisible to the emergency department at 3 AM. NSW has no centralised registry for Advance Care Directives, so clinicians cannot look up your directive in a government database.

If the treating team cannot find your ACD, it effectively does not exist. They will default to the "Person Responsible" hierarchy under the Guardianship Act 1987 to obtain consent for treatment, and that person may not know your wishes or may disagree with them.

Upload your ACD to My Health Record. Give copies to your Enduring Guardian, your GP, your specialist, and your closest family members. If you are entering residential aged care, hand a copy to the admissions team. Carry a wallet card stating that you have an ACD and who to contact.

Mistake 5: Failing to Update After Major Life Changes

An ACD drafted five years ago may not reflect your current medical reality, your current family relationships, or your current treatment preferences. Common triggers that require an update:

• A new diagnosis (particularly dementia, cancer, or organ failure)
• A relationship breakdown with your appointed Enduring Guardian
• The death or incapacity of your Enduring Guardian
• A significant change in your values or treatment preferences
• Remarriage or the birth of a new child who changes your family dynamics

The update must happen while you still have capacity. Once you lose decision-making capacity, you can no longer validly modify or revoke your ACD or Enduring Guardian appointment. Schedule an annual review — set a calendar reminder alongside your car registration or tax return.

When you update, destroy all outdated copies, replace the file on My Health Record, and notify everyone who holds a copy. An outdated ACD circulating alongside a current one creates exactly the kind of ambiguity that undermines enforceability.

Mistake 6: Conflicting Instructions Across Documents

If your ACD says "I refuse all life-prolonging treatment" but your Enduring Guardian appointment includes a direction to "ensure I receive the best available medical care," you have created a contradiction that gives clinicians grounds to override both documents and seek a ruling from NCAT or the Supreme Court.

Review your ACD, Enduring Guardian appointment, and any existing Will or estate planning documents as a single package. The instructions should be consistent across all of them. Your Enduring Guardian should understand your ACD and be prepared to advocate for the instructions it contains — not work against them.

The New South Wales Advance Directive & Living Will Kit is built to prevent these mistakes from the start — with clinician-grade treatment refusal templates, prescribed witness execution checklists, and a document consistency review framework that flags contradictions before you sign.

See more New South Wales guides →