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Common-Law Partner Pension Survivor Benefits in Ontario

Wondering whether you would get a survivor benefit from your common-law partner's workplace pension? Learn why spouse definitions differ and what to check.

Family Law5 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • Whether a common-law partner counts as a spouse depends on which law or plan is asking, because Ontario and federal laws use different tests.
  • A common-law spouse does not inherit under Ontario's Succession Law Reform Act if the other partner dies without a will.
  • Cohabitation means living together in a conjugal relationship, and a shared home is an important but not the only factor.
  • Ask the plan administrator in writing how the plan defines spouse and what it has on file for you, then have a lawyer confirm the answer.

You and your partner may have lived together for years without marrying. If one of you has a workplace pension, a hard question follows: if that person dies, does the survivor receive any pension income?

The answer depends on how the pension plan defines a spouse and on facts about your relationship, so it is worth confirming with a lawyer. This article explains why the answer is not the same as it is for tax, support or housing, and how to get a reliable answer for your own plan.

Why the pension question is harder for common-law couples

A survivor benefit is a pension payment that may continue to a surviving spouse after a plan member dies. Whether you qualify usually turns on one word: spouse. For married couples that is simple. For unmarried couples, the word is defined differently depending on the law, and a pension is governed by its own rules.

Because the exact spouse test and the survivor rules need to be read from the law and from your plan text, they are worth confirming with the plan administrator or a lawyer rather than assuming. A number of years you have heard in one setting, such as for support or taxes, may not be the number that applies to a pension.

The word "spouse" changes from one law to the next

Ontario and federal laws each set their own test for when an unmarried partner counts. Being a spouse for one purpose does not automatically make you one for another.

SettingHow an unmarried partner qualifies
Family Law Act support claimsCohabited continuously for not less than three years
Ontario spousal support guidanceLived together as a couple at least three years, or a relationship of some permanence and a child together
Income Tax ActCohabiting in a conjugal relationship throughout the prior 12 months, or the parent of a child with the taxpayer
Residential Tenancies ActConjugal relationship plus one of: at least one year together, a child together, or a cohabitation agreement
Divorce ActNot available, since only legally married couples can divorce

The point of the table is not to give you a pension answer. It is to show that a rule you read online may belong to a different law. Your pension plan is a separate question, so ask for the plan's own definition.

What cohabiting means and why your living arrangements matter

Under the Family Law Act, to cohabit means to live together in a conjugal relationship, whether within or outside marriage. Two things are needed: a conjugal relationship and living together. The Court of Appeal for Ontario has said there needs to be some element of living together under the same roof, but that lack of a shared residence is not determinative, and the factors are considered together.

That matters if your situation is not tidy. Maybe one of you worked away for long stretches, or you kept separate addresses for a time. Records that show a shared life can help later, so it is sensible to keep them.

Why the estate may not fill the gap

People sometimes assume that if the pension does not pay, the estate will. That is not safe. A common law spouse does not inherit under Ontario's Succession Law Reform Act if the other partner dies without a will. Property also generally stays with whoever bought it: common law couples are not legally required to split property acquired while living together, and the equal-split rule for married spouses does not apply to them.

There are some options. A partner who contributed to property the other partner owns may have a right to part of it, but unless the other partner agrees to pay them back, they may have to go to court to recover the contribution. Couples can also sign a cohabitation agreement setting out property rights, although it cannot decide parenting time or decision-making responsibility for children. Changes to such a contract must be in writing and signed in front of a witness, and each partner should speak to a different lawyer before signing.

What to do next

Start with the plan itself. Ask the plan administrator how the plan treats an unmarried partner. If the member has died or the partner is no longer able to ask, a lawyer can help you request information and understand any deadlines that apply.

Frequently asked questions

Does a common-law partner get a survivor pension in Ontario?

It depends on the plan's own terms and the facts of your relationship, so it should be confirmed for the specific plan. Do not assume the answer from the rules used for support or taxes, because those laws use different tests.

Is the pension rule the same as the three-year support rule?

Not necessarily. The three-year test applies to Family Law Act support claims, while the Income Tax Act and Residential Tenancies Act use their own tests. Ask for the pension plan's definition directly.

What if my partner dies without a will?

A common law spouse does not inherit under Ontario's Succession Law Reform Act in that situation. You may have other claims, such as a contribution to property, but those can require going to court.

Can a cohabitation agreement help?

It can set out property rights between you. Whether it affects a workplace pension depends on the pension law and plan terms, so have a lawyer review both before relying on it.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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