Which document this is: the Health Care Proxy
Massachusetts has no living will statute. The only advance-directive instrument the law creates is the Health Care Proxy, under Massachusetts General Laws chapter 201D. A proxy does one thing: it names an adult, your Health Care Agent (the law also just calls them your “agent”), who can make health care decisions for you once you can no longer make them yourself. It is not a form for writing down your own treatment wishes; it is a form for choosing who decides.
There is no separate Massachusetts “living will.” If you want a document naming who speaks for you, the Health Care Proxy is the one the state’s law recognizes.
The law does not require a particular printed form. Chapter 201D lists four things the document has to do (identify you and your agent, state that you are giving your agent authority, note any limits you want on that authority, and say the authority begins once a doctor determines you cannot make decisions yourself), rather than mandating specific wording. Many people use a standard proxy form; that is a convenience, not a legal requirement.
Because the proxy only appoints someone, some people also want a separate written record of their actual wishes, a letter to their agent, a conversation put in writing, anything that helps the agent decide the way you would. Massachusetts law does not create a form for that, but nothing stops you from writing one and giving it to your agent along with the proxy. Myend’s free Healthcare Directive walks you through naming your agent and writing your wishes in plain language, then formats the result as a Massachusetts Health Care Proxy ready to sign.
Who can make one
Any competent adult, 18 or older, can appoint a health care agent by signing a Health Care Proxy. Competence here is a practical standard, not a diagnosis: you understand what you are signing, who you are naming, and what authority you are giving that person. Chapter 201D puts the age line inside the witnesses’ own attestation: they sign to say you appeared to be at least eighteen, of sound mind, and under no constraint or undue influence.
Signing it so it counts
Massachusetts asks for two witnesses. It does not ask for a notary anywhere in chapter 201D; notarization is not mentioned once across the statute’s seventeen sections. Two witnesses, correctly chosen, make a valid proxy on their own.
- 1You sign
You sign the proxy, or direct someone else to sign it for you, in front of two witnesses.
- 2Two witnesses sign
Two adult witnesses watch you sign and then sign the proxy themselves, affirming that you appeared to be at least 18, of sound mind, and under no pressure.
- 3No notary needed
Nothing else is required. You do not need a notary or a court clerk; the two witness signatures are what make it valid.
Massachusetts disqualifies exactly one kind of witness: the person you are naming as your agent cannot also witness your signature. That is the only witness restriction chapter 201D states. Relatives, heirs, your physician, and facility staff are not barred from witnessing, which is more permissive than many states. The safer habit is still to choose two adults who are not your agent and have nothing to gain from your decisions. The statute does not address signing remotely or electronically, so plan on signing in person with your witnesses physically present.
Naming your Health Care Agent
Every competent adult has the right to name a health care agent by signing a proxy. Almost anyone can serve, with one restriction written into the law: an operator, administrator, or employee of a facility where you are a patient, a resident, or have applied for admission cannot be your agent, unless that person is related to you by blood, marriage, or adoption. Beyond that one rule, chapter 201D does not limit who you can choose. Your agent does not have to be a spouse or relative; it has to be someone you trust to decide the way you would.
Your agent’s authority is not unlimited by default. You can add limits directly on the proxy, restricting what your agent may or may not decide. Whatever you leave open, chapter 201D gives your agent every health care decision you could make yourself, and it names decisions about life-sustaining treatment among them. Massachusetts does not make that authority conditional on your having written anything down first, the way some states do, which is exactly why choosing someone who has actually talked with you about what you want is the whole job here.
When it takes effect
Your agent has no authority the moment you sign. It starts only after your attending physician determines, in writing and using accepted medical judgment, that you can no longer make or communicate health care decisions yourself. The physician has to record the cause, nature, extent, and expected length of the incapacity in your medical record, and has to tell you (if you are able to understand), your agent, and, if you are in a mental health facility, its director, both out loud and in writing.
Two protections sit inside that rule. If the incapacity is because of mental illness or a developmental disability, the physician making the call needs specialized training in that area, or has to consult someone who does. And a physician who is also your named agent cannot be the one who declares you incapacitated; someone else has to make that determination. Even after you have been found incapacitated, if you are able to object to a specific decision your agent makes, your objection wins unless a court has separately ruled that you lack capacity. If you later regain capacity, your agent’s authority pauses, and it only resumes if you lose capacity again.
Changing or cancelling it
You can revoke your Health Care Proxy at any time, and Massachusetts assumes you have the capacity to do it unless a court has ruled otherwise. Two ways work: tell your agent or a health care provider, out loud or in writing, that you are revoking it, or do something that clearly shows you mean to cancel it, tearing it up or crossing it out. A physician told about a revocation has to note it in your medical record right away and tell your agent and any other providers who know about the proxy, both verbally and in writing; an agent or nurse who hears about it has to pass the word to the attending physician just as quickly.
Two things revoke it automatically, without you doing anything else: signing a new Health Care Proxy replaces the old one, and if the agent you named was your spouse, a divorce or legal separation ends their authority. Worth remembering if your circumstances change and you never got around to signing a new one.
Making sure it is found
Keep it simple: give a signed copy of your proxy to your agent, your primary care physician, and any hospital where you are likely to be treated, and make sure your family knows where the original is kept. A proxy nobody can find in an emergency does not help anyone.
If you signed a proxy in another state before moving to or being treated in Massachusetts, chapter 201D says it is still honored here as long as it was validly signed under that other state’s law, subject to the same conscientious-objection rules that apply to a Massachusetts proxy generally. You do not need to redo it just because you crossed a state line.
This is not a POLST
A Health Care Proxy is not the same thing as a medical order some seriously ill patients also carry, a form signed by a clinician, not just by you, that turns wishes into actual standing orders for paramedics and hospital staff to follow immediately, covering things like resuscitation. These clinician-signed orders go by different names in different states and settings. A proxy names your decision-maker; on its own, it does not instruct paramedics on the spot. If you have a serious or advanced illness, ask your doctor whether that kind of order makes sense for you. Myend does not prepare that kind of clinician-signed medical order, only your personal proxy and directive.
What is different about Massachusetts
Massachusetts never wrote a living will law. It wrote an agent law, and left the instructions to you and the person you choose.
Most states give you two tools: a living will that writes down your treatment wishes, and a proxy or power of attorney that names someone to carry them out. Massachusetts only ever built the second one. Chapter 201D is entirely about appointing, empowering, and limiting a health care agent; it has no provision for stating your own wishes, no artificial-nutrition clause, no terminal-condition definition, and, because it never addresses treatment instructions at all, no pregnancy clause either. Chapter 201D says nothing about pregnancy; your proxy applies as written.
The other place Massachusetts stands out is who can witness your signature. Most states disqualify a long list of people, relatives, heirs, your physician, facility staff, from witnessing. Massachusetts disqualifies exactly one: the agent you are naming. That, combined with having no notary requirement at all, makes the Massachusetts proxy one of the easier documents in the country to sign correctly. What takes real thought here is not the paperwork; it is choosing the right person and telling them, clearly, what matters to you.
Common questions
Do I need to get my Massachusetts health care proxy notarized?
How many witnesses do I need, and who cannot be one?
Who can I name as my health care agent in Massachusetts?
Do I need a lawyer to make a health care proxy in Massachusetts?
What is the difference between a living will and a health care proxy here?
Can I change my mind after I sign it?
When does my agent actually start deciding for me?
Does my Massachusetts proxy still work if I end up in a hospital in another state?
Sources and review
Legal sources
- Mass. Gen. Laws ch. 201D, § 1Defines the Health Care Proxy and the health care agent
- Mass. Gen. Laws ch. 201D, § 2Signing: two witnesses, no notary, age 18, and who cannot witness
- Mass. Gen. Laws ch. 201D, § 3Who cannot be named as your health care agent
- Mass. Gen. Laws ch. 201D, § 4What the proxy must contain; confirms no mandatory state form
- Mass. Gen. Laws ch. 201D, § 5The agent's authority, including decisions about life-sustaining treatment
- Mass. Gen. Laws ch. 201D, § 6When the agent's authority begins, the incapacity determination
- Mass. Gen. Laws ch. 201D, § 7How a proxy can be changed or revoked
- Mass. Gen. Laws ch. 201D, § 11Recognizes a proxy validly signed in another state
- Mass. Gen. Laws ch. 201D, §§ 1 to 17Read in full; the chapter contains no pregnancy provision and never mentions a notary
Read from primary statutes, September 2026. General information, not legal or medical advice.