Substitute Decision Maker Saskatchewan: How to Choose a Health Care Proxy

Appointing a proxy is the most consequential decision in your Saskatchewan health care directive — more so than any treatment preference you write down. Treatment scenarios are unpredictable. Your proxy is the person who interprets your values when the situation doesn't match anything you anticipated.

Saskatchewan calls this person a Proxy, not a "substitute decision maker" or "health care agent" (terms used in other provinces). The terminology matters because using the wrong label on a legal document creates ambiguity that hospitals can flag.

Who Can Serve as a Proxy

Saskatchewan law sets minimal requirements. Your proxy must be capable of making decisions (they need mental capacity themselves), and they cannot be a minor. There's no requirement that they be a family member, live in Saskatchewan, or be a Canadian citizen.

That flexibility is deliberate — you can appoint a trusted friend, a colleague, or anyone you believe will advocate for your wishes under pressure. But that breadth also means the choice is entirely on you. No one is vetting your selection.

The Joint Proxy Tie-Breaker Rule

You can appoint multiple proxies to act jointly. If you do, be aware of Saskatchewan's default tie-breaking mechanism: when joint proxies disagree, the decision goes to a majority vote. If there's no majority — two proxies with opposing views, for example — the proxy listed first in the directive makes the final decision.

Most families don't know this. The order you list your proxies isn't just administrative — it establishes a legal hierarchy. If you want your daughter to have the deciding vote over your son in a deadlock, list her first.

Naming Alternate Proxies

You can also name alternate (successor) proxies who step in if your primary proxy is unavailable, refuses to act, or loses capacity themselves. This is straightforward insurance against the most common failure mode: your one proxy is travelling, unreachable, or has moved to another country.

Without an alternate, and with your primary proxy unavailable, medical teams fall back to the statutory nearest-relative hierarchy — spouse first, then adult children by age, then parents, then siblings. That default list might include people you specifically wanted to exclude from medical decisions.

What Your Proxy Can and Cannot Do

Your proxy can consent to or refuse medical treatments on your behalf, following the wishes you documented or, where your directive is silent, using their best judgment about what you would have wanted. Healthcare providers who follow a proxy's direction in good faith are protected from liability.

Your proxy cannot authorize Medical Assistance in Dying on your behalf. MAID requires a conscious, voluntary request from the patient at the time the service is administered — no proxy authority overrides that federal requirement.

Your proxy also cannot compel doctors to provide treatment that is clinically inappropriate or futile. If a medical team determines that a requested intervention has no reasonable prospect of benefit, they are not legally obligated to provide it, even if the proxy insists.

Proxy vs. the Nearest Relative Hierarchy

If you lose capacity without a directive, Saskatchewan law establishes a fixed hierarchy of nearest relatives who can make medical decisions: spouse or common-law partner, adult children (eldest first), parents (custodial parent preferred), adult siblings (eldest first, whole blood over half blood), grandparents, adult grandchildren, then adult aunts/uncles and nieces/nephews.

A named proxy overrides this entire hierarchy. That's the core reason to appoint one: without a directive, the law's default list makes the decision, and that list may not reflect your relationships or trust levels.

When a Proxy's Appointment Ends

A proxy's appointment is automatically revoked when you divorce the person you named as proxy — unless your directive explicitly states the appointment continues regardless of marital status. This catches many people off guard during separation proceedings, especially when the divorce isn't finalized but the couple is living apart.

Other triggers that should prompt you to revisit your proxy choice: your proxy moves overseas and becomes practically unreachable, develops their own health issues, or simply tells you they no longer want the responsibility. None of these automatically revoke the appointment, so updating your directive is on you.

Practical Considerations

Choose someone who can handle pressure, disagree with family members if necessary, and communicate clearly with medical teams. Proximity matters less than temperament — your proxy might need to make a decision at 2 a.m. over the phone, not at a bedside. Tell your proxy you're naming them before you sign anything, and walk them through your specific wishes so they aren't interpreting your values from a cold document during a crisis.

The Saskatchewan Advance Directive & Living Will Kit includes proxy nomination templates, conversation guides, and a structured proxy-briefing worksheet that helps you document exactly what your proxy needs to know.

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