Connecticut Advance Directive Witness Requirements: Who Can and Cannot Witness

Getting the witnesses wrong is the single most common reason Connecticut advance directives get challenged or rejected. The rules are not complicated, but they are specific — and they differ from the witness requirements for a financial power of attorney, which trips up families who assume one set of rules covers everything.

Here are Connecticut's exact witness requirements, who is disqualified, what the optional notarization step does, and the additional rules that apply if you live in a state-licensed facility.

The Basic Rule: Two Adult Witnesses

Under C.G.S. § 19a-575a, a Connecticut advance directive must be signed in the presence of two adult witnesses (age 18 or older). Both witnesses must be present when you sign the document. They then sign a witness attestation confirming they observed your signature and that you appeared to be of sound mind and under no duress.

There is no requirement that witnesses be Connecticut residents, unrelated to you, or have any particular professional qualification. A neighbor, coworker, friend, or family member can serve — with one critical exception.

Who Cannot Be a Witness

Your appointed health care representative cannot witness the document. This is explicitly prohibited under Connecticut law, and it is the most frequent execution error.

If your designated representative signs as one of your two witnesses, the witness attestation is defective. A hospital, care facility, or opposing party in a probate dispute can challenge the validity of the entire advance directive based on this single mistake.

Your alternate health care representative is not explicitly prohibited from witnessing under the statute, but best practice is to keep all named representatives off the witness list entirely. An alternate who witnessed the document and later needs to assume the representative role creates an unnecessary conflict-of-interest question.

The Optional Notarized Witness Affidavit

Connecticut law does not require notarization of an advance directive. The document is legally valid with just your signature and two proper witnesses.

However, C.G.S. § 19a-578 provides for an optional witness affidavit — a separate statement your two witnesses sign before a notary public. When this affidavit is completed:

• It creates prima facie evidence that the advance directive was properly executed
• If anyone challenges the document in probate court, the burden of proof shifts to them
• The affidavit eliminates the need to locate and depose the original witnesses during a medical crisis

The affidavit costs whatever your local notary charges (typically $5-$15 per signature) and adds a few minutes to the signing process. For the legal protection it provides, skipping it is a false economy.

How to Complete the Affidavit

1. After signing the advance directive with your two witnesses, go together to a notary (or have a mobile notary come to you)
2. The witnesses — not you — sign the affidavit in the notary's presence
3. The notary notarizes the witness affidavit
4. Attach the affidavit to the advance directive

Some attorney offices, banks, and UPS stores offer notary services. Connecticut town clerks can also notarize documents.

Facility-Specific Witness Rules

If you are a resident of a facility operated or licensed by:

• The Department of Mental Health and Addiction Services (DMHAS), or
• The Department of Developmental Services (DDS)

Then additional witness requirements apply:

• At least one witness must be unaffiliated with the facility (not an employee, contractor, or administrator)
• At least one witness must be a physician, advanced practice registered nurse (APRN), or licensed clinical psychologist

These protections exist to guard against undue influence in residential care settings. If you are in a private nursing home or assisted living facility not operated by DMHAS or DDS, the standard two-witness rule applies.

Advance Directive vs. Financial POA Witness Rules

This comparison catches people off guard because the two documents look similar but have different execution standards:

The financial POA absolutely requires notarization — without it, Connecticut banks and financial institutions will reject the agent's authority. Many families complete both documents in the same sitting and assume the notary step for the financial POA covers the advance directive. It does not. The witness affidavit for the advance directive is a separate document.

Practical Tips for Finding Witnesses

• Choose people who are reliably available. If a challenge arises years later, witnesses may need to confirm the signing — the notarized affidavit makes this unnecessary
• Do not use healthcare providers who may treat you. While not prohibited, it creates potential conflicts
• Have witnesses sign in blue ink. This makes it easy to distinguish originals from copies
• Both witnesses must be physically present when you sign. Remote witnessing or witnessing at different times invalidates the attestation

The Connecticut Advance Directive & Living Will Kit includes a witness eligibility checklist so you can verify your witnesses qualify before the signing, plus the witness affidavit form ready for notarization.

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