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Health Care Power of Attorney Requirements in Oklahoma

In Oklahoma, a power of attorney for health care under the Oklahoma Health Care Agent Act must be signed before a notary public or before two witnesses aged 18 or older who are not legatees, devisees or heirs at law of the principal.

Last checked . General information, not legal advice.

Oklahoma at a glance

Document name
Power of attorney for health care
An advance directive for health care under 63 O.S. 3101.4 can also appoint a health care proxy, and only that route covers life-sustaining treatment decisions.
Witnesses
2 witnesses or a notary
Witnesses must be 18 or older. An advance directive for health care (with a health care proxy) under 63 O.S. 3101.4 needs two witnesses.
Notary required
Notary or 2 witnesses
A power of attorney for health care may be signed before a notary instead of two witnesses.
Who cannot witness
Legatees, devisees or heirs at law of the principal
Witnesses must be at least 18. The statutory advance directive form says witnesses shall not be related to the signer and shall not inherit from the signer.

Sources

Last checked

The rules in Oklahoma

What is a health care power of attorney called in Oklahoma?

Document name in Oklahoma: Power of attorney for health care. An advance directive for health care under 63 O.S. 3101.4 can also appoint a health care proxy, and only that route covers life-sustaining treatment decisions.

How many witnesses does a health care power of attorney need in Oklahoma?

Witnesses in Oklahoma: 2 witnesses or a notary. Witnesses must be 18 or older. An advance directive for health care (with a health care proxy) under 63 O.S. 3101.4 needs two witnesses.

Does a health care power of attorney have to be notarized in Oklahoma?

Notary or 2 witnesses. Notary required in Oklahoma: notary or 2 witnesses. A power of attorney for health care may be signed before a notary instead of two witnesses.

Who cannot witness a health care power of attorney in Oklahoma?

Who cannot witness in Oklahoma: Legatees, devisees or heirs at law of the principal. Witnesses must be at least 18. The statutory advance directive form says witnesses shall not be related to the signer and shall not inherit from the signer.

Where do the Oklahoma health care power of attorney requirements come from?

The rules above come from Okla. Stat. tit. 63, 3111.3 and Okla. Stat. tit. 63, 3101.4. Each source is linked on this page. We last checked them in October 2026.

Good to know

The Oklahoma Health Care Agent Act took effect April 29, 2022, and its execution section was amended effective May 1, 2023. A power of attorney for health care under it cannot authorize withholding life-sustaining treatment, nutrition or hydration; that requires an advance directive under the Oklahoma Advance Directive Act.

What this means in practice

Follow the signing rules of the state where you live when you sign. If you spend a lot of time in another state, check whether that state honors documents signed elsewhere, and consider signing a version that also meets its rules.

Choose witnesses before the signing day. Witness rules often exclude the agent you are naming and may also exclude relatives, people who would inherit from you, or staff of a health care provider or facility caring for you. Using two unrelated adults avoids most problems.

Give copies of the signed document to your agent, any alternate agent and your doctors, and keep the original where it can be found quickly. If you later change your mind, revoke the old document in writing and tell everyone who has a copy.

General information, not legal advice. Laws change, and cities can add their own rules, so check the current statute before you rely on it.