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What Happens When a CAS Worker Comes to Your Door in Ontario

Learn what a children's aid worker can do during an unannounced visit, your rights as a parent, and sensible steps to take in Ontario.

Family Law5 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
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Key takeaways
  • A society that receives a report must assess it as soon as possible and verify the information, and how that happens in your situation depends on the circumstances.
  • A worker may interview your child with or without your consent depending on the circumstances, although getting your agreement or giving notice is preferred.
  • Removing a child without a warrant is limited to cases of substantial risk to the child's health or safety.

An unexpected visit from a children's aid society worker is stressful, and most parents are unsure what the worker is allowed to do. It helps to understand why the visit is happening and where the worker's powers start and stop.

This article explains how a visit usually fits into the child protection process in Ontario, what powers a worker has, and calm, practical steps you can take. It is general information, not advice on your situation.

Why a CAS worker may be at your door

Anyone who has reasonable grounds to suspect a child needs protection must immediately report that suspicion to a society. When a society receives a report, it must as soon as possible carry out an assessment and verify the reported information. A visit to your home is often part of that process.

The grounds on which a court can find a child in need of protection include physical harm, a risk of physical harm and a risk of emotional harm. A visit does not mean a finding has been made. It usually means the society is checking a report.

You may wonder who made the report. A society can refuse to give you access to your own record if access could reasonably be expected to identify a person who was required by law to give information, such as someone who reported.

What a worker can do during a visit

Under the Ontario Child Protection Standards, a society may interview a child inside or outside the home, with or without the parent's or caregiver's knowledge or consent, depending on the circumstances. The standard says it is preferable to get the parents' agreement or give them notice.

Whether you must open the door is a separate question, and it is covered in our article on letting a worker into your home.

When a child can be taken from the home

A justice of the peace may issue a warrant authorizing a child protection worker to bring a child to a place of safety. The justice must be satisfied on sworn information that the child is under 16, needs protection, and that a less restrictive option is unavailable or would not be enough.

There is an exception. A worker who believes on reasonable and probable grounds that a child under 16 needs protection, and that there would be a substantial risk to the child's health or safety in the time needed to get a warrant, may bring the child to a place of safety without a warrant. In that situation the worker may also enter premises without a warrant, by force if necessary, to search for and remove the child. In other situations, the Act's removal powers depend on a warrant or court order.

If a child is brought to a place of safety, then as soon as practicable and in any event within five days the child must be brought before the court, returned to the person who last had charge of them, or placed under a temporary care agreement or an agreement with a 16- or 17-year-old.

Sensible steps during the visit

Cooperating and protecting your rights are not opposites. You can be respectful, answer what you are comfortable answering, and still say that you would like advice before agreeing to a plan.

What to do next

After the visit, ask the worker what happens next and when you can expect to hear from the society. If services are not agreed, a society may apply to the court to decide whether a child is in need of protection.

Frequently asked questions

Can a CAS worker visit without notice?

Yes, in some situations. The Ontario Child Protection Standards list the need to interview the child immediately as one reason for an unannounced visit. The standards also say it is preferable to get the parents' agreement or give them notice.

Can I find out who reported me?

Often not. A society may refuse access to a record if it could reasonably identify a person who was required by law to report. You may still have a right to any part of the record that can reasonably be separated from the withheld part.

Can a worker take my child at the first visit?

It is possible but limited. A worker may bring a child under 16 to a place of safety without a warrant only where there is a substantial risk to the child's health or safety in the time needed to get one. Otherwise removal depends on a warrant or court order.

Will a visit mean going to court?

Not necessarily. Help is meant, where possible, to be based on mutual consent. A society can apply to the court to decide whether a child is in need of protection where voluntary services are not agreed.

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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