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Health and Dental Coverage After Separation in Ontario

Worried about losing a spouse's workplace health or dental plan? See what to check, how children's coverage is handled and what to put in writing in Ontario.

Family Law4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
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Key takeaways
  • Whether a separated spouse stays on a workplace plan depends on the plan contract and the insurer, so check the plan booklet before assuming anything.
  • Where coverage for a child is available to either parent at a reasonable rate, a court may order it to be acquired or continued.
  • A separation agreement is unenforceable unless it is in writing, signed and witnessed, so coverage promises belong in the written agreement.

If you are covered under your spouse's workplace health and dental plan, separation can feel like a threat to prescriptions, glasses, dental work and counselling that you rely on. The worry is reasonable, and it is worth acting on early.

This article explains who decides whether coverage continues, how children's coverage is treated in support cases, and how to deal with the issue in a separation agreement in Ontario. It cannot tell you what your particular plan says, because that is set by your plan.

Does a separated spouse stay on the plan?

There is no general statute that answers this. Whether a separated or divorced spouse stays on a workplace group plan depends on the plan contract and the insurer. Some plans define a spouse in a way that ends coverage at divorce, others earlier, and some allow a transition period. You cannot safely assume either way.

The plan booklet and the plan administrator, often a human resources department or benefits provider, are the best places to find the answer. Ask in writing so you have a record.

What happens to the children's coverage

Children are treated differently from spouses. In making a child support order, where medical or dental coverage for the child is available to either parent through an employer or otherwise at a reasonable rate, the court may order that the coverage be acquired or continued. This is found in the Ontario Child Support Guidelines, and in the Federal Child Support Guidelines for divorce cases.

Even with coverage, some costs fall outside it. Child support special expenses include health-related expenses that exceed insurance reimbursement by at least $100 a year, such as orthodontic treatment, counselling, physiotherapy, prescription drugs, hearing aids and glasses. How those costs are shared is something to settle in the agreement or order.

Keeping coverage in your agreement

A separation agreement can be made by two people who cohabited and are living separate and apart. It is unenforceable unless it is in writing, signed by the parties and witnessed. A verbal promise to keep you on the plan will not hold up.

A court may also set aside a domestic contract, including a separation agreement, if a party failed to disclose significant assets, debts or other liabilities. Ask for plan details and be open about your own, so the agreement is built on accurate information.

Be realistic about the spouse's own coverage. Because it depends on the plan contract, an agreement that says the plan member will keep you on the plan may not be something the insurer will honour. Raise this with a lawyer before you sign.

Planning for a gap in your own coverage

If you may lose coverage, work out your options before the date it ends. Check whether you have a plan of your own through work, school or a professional association, and ask insurers about individual policies. Book any needed dental or vision care while you are still covered, if the plan allows.

If you have ongoing prescriptions or treatment, speak to your pharmacist or provider about options. If the cost of replacement coverage is a real issue in your finances, it can be raised when support is discussed.

What to do next

Ontario's Family Law Information Centres are free services across Ontario that give information about separation, divorce and related family law issues, with information and referral coordinators and duty counsel provided by Legal Aid Ontario.

Frequently asked questions

Will I automatically lose my spouse's health and dental coverage when we separate?

Not automatically, and not necessarily at any set time. It depends on the plan contract and the insurer, so check the plan booklet and ask the plan administrator in writing.

Can a court order health coverage for my children?

Yes, in a child support case. Where medical or dental coverage is available to either parent through an employer or otherwise at a reasonable rate, the court may order it to be acquired or continued.

Who pays for dental or health costs that insurance does not cover?

That is for the agreement or court order. Child support special expenses can include health-related costs that exceed insurance reimbursement by at least $100 a year, such as orthodontics, counselling and glasses.

Is a verbal promise to keep me on the plan enough?

No. A separation agreement is unenforceable unless it is in writing, signed by the parties and witnessed. Even then, the plan's own terms still apply.

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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