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Common-Law Pension Rights in Ontario After Separation or Death

Wondering if a common-law spouse can share a workplace pension or get survivor benefits in Ontario? See which rules apply and what to confirm.

Family Law5 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • Ontario does not divide property between common-law couples when they separate, and each keeps what they bought.
  • A common-law spouse does not inherit under the Succession Law Reform Act if there is no will, but may still apply for dependant support.
  • Whether a workplace pension pays a survivor benefit depends on the plan and the pension law that governs it, so confirm the details with the plan administrator and a lawyer.

If you are in a common-law relationship, your partner's workplace pension may be one of your family's largest assets. You may wonder whether you can share it if you separate, or receive a survivor benefit if your partner dies.

The answer depends on which law governs the pension and how it defines a spouse. This article explains the family law and estate rules that surround pensions, and what to ask before you assume you are covered or not.

Who counts as a common-law spouse depends on the law

There is no single definition. For support under the Family Law Act, a spouse includes two unmarried people who have cohabited continuously for at least three years, or who cohabited in a relationship of some permanence and are parents of a child as set out in the Children's Law Reform Act. For federal tax, the period is 12 months of conjugal cohabitation, or sooner if you share a child.

A pension plan or pension statute may use its own definition. Do not assume that being common-law for tax or support purposes gives you spouse status under a particular plan. Ask the plan administrator for the plan text and the definition it applies.

After separation: property and support

Under the Family Law Act, the general meaning of spouse covers married persons and does not include unmarried partners for property division. Ontario does not divide property between common-law couples when they separate; each partner keeps what they bought, and neither has a right to share the other's increase in value.

There is an exception. A common-law partner who contributed to property the other owns may have a right to part of it, and may have to go to court unless the owner agrees to pay the contribution back. Whether and how this applies to a pension is a legal question that turns on the facts.

Support is separate from property. A common-law spouse under section 29 must support the other according to need, to the extent they are able. When the court sets the amount of support, it considers how long the two of you cohabited. How pension income fits into that picture depends on your situation, so it is worth confirming with a lawyer.

After death: wills, intestacy and dependant support

A common-law spouse does not inherit under the Succession Law Reform Act if there is no will. A married spouse with no issue takes the whole estate, but these spousal entitlements do not apply if the spouses were separated at the time of death. If there is a will, your partner can name you as a beneficiary, so a current will matters.

There is a separate route. For dependant support, the meaning of spouse follows Family Law Act section 29, so it includes unmarried partners who cohabited for three years or had a child in a relationship of some permanence. If the deceased did not make adequate provision for the proper support of a dependant, the court may order support out of the estate.

Whether pension money paid directly to a named person is treated as part of the estate for these purposes is not something to assume. Ask a lawyer.

Protecting yourself with an agreement

Two unmarried people who are cohabiting, or intend to, may make a cohabitation agreement about their rights and obligations, including property and support. It is unenforceable unless it is in writing, signed by the parties and witnessed. Ontario's guidance advises that each partner speak to a different lawyer and exchange financial information before signing.

A court may set aside a domestic contract if a party failed to disclose significant assets, debts or liabilities, or did not understand its nature or consequences. If you want pension arrangements addressed, disclose the pension fully. If the parties later marry, the agreement is deemed to be a marriage contract.

What to do next

Frequently asked questions

Can I share my common-law partner's pension if we separate?

Ontario does not divide property between common-law couples, and each partner keeps what they bought. A partner who contributed to property the other owns may have a claim to part of it. The effect on a pension depends on the plan and the facts, so get advice.

Do I inherit my common-law partner's estate without a will?

No. A common-law spouse does not inherit under the Succession Law Reform Act if there is no will. You may still apply for dependant support if you qualify.

Is there a deadline to claim support from the estate?

An application for dependant support may not be made more than six months after the grant of letters probate or letters of administration. A court may allow a late application, but only for the undistributed part of the estate.

Does a cohabitation agreement help with pensions?

A cohabitation agreement may deal with property and support. It must be in writing, signed and witnessed to be enforceable. Whether it can bind a particular pension plan is worth confirming with a lawyer.

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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