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Who Can Take Part in a CAS Court Case in Ontario?

Learn who the parties are in an Ontario child protection case, and whether a grandparent, foster parent or child aged 12 or older can attend court.

Family Law5 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • The parties to an Ontario child protection proceeding are the applicant, the society and the child's parent, plus a representative of each band or community for a First Nations, Inuk or Métis child.
  • A grandparent, foster parent or other person who cared for the child continuously for the six months before the hearing gets notice and may attend, but needs the court's leave to do more.
  • A child 12 or older is entitled to notice and to attend unless the court is satisfied that being there would cause the child emotional harm.

If a children's aid society (CAS) has gone to court about a child in your family, you may wonder where you fit in. Parents are the obvious participants, but grandparents, aunts, uncles and foster parents often care for the child and want to know whether they can be in the room.

In Ontario, the Child, Youth and Family Services Act, 2017 (CYFSA) gives different people different levels of involvement. This article explains who is a party, who gets notice and a limited voice, how older children fit in, and what options exist later on.

Who are the parties?

Being a "party" means having a full role in the case. In a child protection proceeding, the parties are the applicant, the society with jurisdiction and the child's parent. For a First Nations, Inuk or Métis child, a representative chosen by each of the child's bands and communities is also a party.

Whether a grandparent or another relative counts as a "parent" under the CYFSA depends on how the Act defines that word and on the particular situation. Because this varies, it is worth getting advice about your own circumstances before assuming you are, or are not, a party.

Grandparents, foster parents and other caregivers

Someone who is not a party may still have a recognized role. Anyone who cared for the child continuously during the six months immediately before the hearing, including a foster parent, gets the same notice as a party and may attend, have a lawyer and make submissions.

Taking any further part requires the court's leave, which means permission. The six-month period is measured back from the hearing, so the timing of when care began and ended matters.

Children aged 12 and older

A child who is 12 or older is entitled to notice of the hearing and to attend, unless the court is satisfied that being present would cause the child emotional harm. Whether a younger child attends is not something this rule gives them a right to.

Hearings are held without the public present unless the court orders otherwise. In deciding, the court considers the parties' wishes and interests and whether a public hearing would cause emotional harm to a child.

After the final order: status reviews and custody

A final order is not always the end. A status review of a final order may be started, on notice to the society, by the child (if at least 12), a parent, the person the child was placed with under a supervision order, a person granted custody, a foster parent who has cared for the child for at least two years, or a band or community representative for a First Nations, Inuk or Métis child. A parent needs the court's leave in some cases.

Custody is another possible outcome. Instead of a section 101 order, the court may grant custody to one or more persons, such as a grandparent, if that better serves the child's best interests, and the person must consent. Foster parents are treated differently: a custody order under that section cannot be made in a foster parent's favour, but on a status review the court may grant custody to a person, including a foster parent, with that person's consent.

PersonRole or route
ParentParty; may start a status review, sometimes with leave
Grandparent who cared for child for six monthsNotice, attend, lawyer, submissions; may be granted custody if consenting
Foster parentSame notice rights if continuous care; status review after two years of care
Child 12 or olderNotice and attendance; may start a status review

What to do next

Court timelines in these cases are tight, so acting early helps. For example, the Family Law Rules set maximum times such as 35 days for a temporary care and custody hearing and 120 days for the hearing, measured from the start of the case.

Frequently asked questions

Can a grandparent go to a CAS court hearing in Ontario?

A grandparent who cared for the child continuously during the six months before the hearing gets notice and may attend, have a lawyer and make submissions. To take any further part, the grandparent needs the court's leave. Whether a grandparent counts as a parent depends on the situation, so get advice.

Can a foster parent attend a child protection hearing?

Yes, if the foster parent cared for the child continuously during the six months immediately before the hearing. They get the same notice as a party and can attend, have a lawyer and make submissions, but need leave for more.

Can my child attend court if they are 12 or older?

A child 12 or older is entitled to notice and to attend, unless the court is satisfied that being present would cause the child emotional harm. A lawyer can help you and your child think through whether attending is a good idea.

Are CAS hearings open to the public?

No, not usually. Child protection hearings are held without the public present unless the court orders otherwise. The court considers the parties' wishes and interests and whether a public hearing would cause emotional harm to a child.

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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