Imagine you’re in a hospital, unconscious after a stroke or a serious accident. A decision has to be made: should the doctors operate, start a treatment, or do something else? You can’t be asked. So who decides?
Someone always does. The only question is whether it’s a person you chose, guided by wishes you expressed, or a default set by law, guided by guesswork.
If you haven’t named anyone, the law picks for you
Every province and territory has a default order for who steps in when you can’t make your own medical decisions and haven’t named someone. The exact list varies, but it generally runs in roughly this order:
- A spouse or partner
- An adult child or parent
- A sibling
- Other relatives
This default exists so that decisions can be made when no one was named. But it has real limitations.
It might not be who you’d choose. The law picks by relationship, not by who actually knows your mind. Your eldest child might top the list even if your younger child is the one you’ve talked to about all of this. An estranged spouse might rank above the sibling you’re closest to.
It can create conflict. When several people share the same rank (three adult children, say) and they disagree, there’s no built-in tiebreaker. Families argue in hospital waiting rooms over exactly this.
It still leaves them guessing. Even the right person, picked by default, has no special insight into what you’d want unless you told them. Default authority is not the same as informed authority.
When you name someone yourself
You can override the default by formally naming your own decision-maker. The legal term depends on your province:
- Ontario: attorney for personal care (named in a power of attorney for personal care)
- Alberta: agent (named in a personal directive)
- British Columbia: representative (named in a representation agreement)
- Other provinces use their own terms for the same role
Whatever it’s called, naming someone does two things the default can’t. It puts the person you trust in charge, not whoever the law happens to rank first. And it removes ambiguity, so there’s no dispute about who has authority when the moment comes.
Choosing the right person
The instinct is to name whoever is closest to you, such as your spouse. Sometimes that’s right, but the best decision-maker isn’t necessarily the person you love most. It’s the person who can do the job.
A good decision-maker is someone who:
- Will actually be reachable and willing to take on the responsibility.
- Can stay steady under pressure — medical decisions are made in stressful, emotional moments.
- Will honour your wishes over their own, even when your choice isn’t the one they’d make for themselves.
- Can advocate: push back on a medical team, ask hard questions, hold a line.
A wonderful, loving person who can’t bring themselves to say “no more” when that’s what you wanted isn’t the right choice, however much you trust them otherwise.
Naming isn’t enough on its own
Choosing your decision-maker is only half the job. A person with legal authority but no idea what you’d want is still guessing.
The other half is telling them. What does a good quality of life mean to you? When would you want treatment to stop? What outcomes would you find unacceptable? These are the questions that turn a decision-maker from someone authorized to guess into someone equipped to act.
This is the whole reason advance care planning is a conversation and a set of documents, not just a signature on a form. The form names the person. The conversation prepares them.
Where Tiller fits
Tiller helps you do both halves. It guides you through choosing your decision-maker, produces the document that formally names them under your province’s law, and walks you through articulating the values that person will need when the moment comes.
So the person you choose isn’t left guessing. They’re left knowing.
The document Tiller produces is formatted to your province’s requirements for naming a decision-maker. Completing the witnessing and signing steps is what makes it legally effective. We guide you through those.
Related reading: