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Duty to Report Child Abuse in Ontario: Who Must Call CAS

Who must report a child in need of protection to a children's aid society in Ontario, the penalties for professionals who don't, and key exceptions.

Family Law4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • Anyone with reasonable grounds to suspect a child is or may be in need of protection must report immediately to a children's aid society.
  • Professionals who fail to report a suspicion based on their work commit an offence, with a fine of up to $5,000.
  • The duty does not override solicitor-client privilege, and it generally does not apply to children aged 16 or 17.

If you are a teacher, health care worker, neighbour or relative, you may wonder where your legal duty to report begins. In Ontario the duty is broader than many people expect, and it applies to everyone, not just professionals.

This article explains who must report, what triggers the duty, what the penalties are, and the main exceptions. It is general information and not advice on a specific situation.

Who must report

Under section 125(1) of the Child, Youth and Family Services Act (CYFSA), anyone who has reasonable grounds to suspect that a child is or may be in need of protection must immediately report the suspicion, and the information it is based on, directly to a children's aid society. The duty continues if new grounds arise.

The test is suspicion on reasonable grounds. You do not need proof, and you are not expected to investigate. Societies have the exclusive mandate to investigate.

What counts as a child in need of protection

The Act sets out specific grounds. Some of the main ones are:

Exposure to domestic violence is not listed as a separate ground. It is assessed under the harm and risk-of-harm grounds. Discipline can also matter: the Criminal Code justifies force by way of correction only if it does not exceed what is reasonable under the circumstances, and force causing physical harm can still make a child in need of protection.

Penalties for professionals who do not report

Professionals, including health care professionals, social workers and teachers, who fail to report a suspicion based on information from their professional duties commit an offence, punishable by a fine of up to $5,000.

The duty overrides confidentiality and the Personal Health Information Protection Act (PHIPA). In other words, a professional generally cannot rely on a confidentiality obligation or PHIPA as a reason to stay silent, but the duty does not override solicitor-client privilege between a lawyer and client.

PersonWhat the law says
Any member of the publicMust report reasonable suspicion immediately to a society
Teacher, social worker, health care professionalSame duty, plus an offence with a fine of up to $5,000 for failing to report a work-based suspicion
Lawyer, about client communicationsDuty does not override solicitor-client privilege

Exceptions to know about

If you are unsure whether an exception fits your situation, a lawyer can confirm before you decide not to report.

What happens after you report, and what to do next

After a report, a society worker assesses risk and urgency using the Ontario Child Welfare Eligibility Spectrum, and an investigation takes place where there are reasonable and probable grounds. You report the suspicion; the society decides what follows.

If you are a parent worried that a report may be made about you, or you are involved in a child protection matter, a lawyer can explain your rights and options.

Frequently asked questions

Do ordinary people have to report, or only professionals?

Everyone does. Anyone with reasonable grounds to suspect that a child is or may be in need of protection must report immediately to a society. Professionals face an additional offence for failing to report.

What is the penalty for a professional who does not report?

A professional who fails to report a suspicion based on information from their professional duties commits an offence, punishable by a fine of up to $5,000.

Can I stay silent because of confidentiality rules?

Generally no. The duty to report overrides confidentiality and PHIPA. The exception is solicitor-client privilege between a lawyer and client.

Does the duty apply if the child is 16 or 17?

The mandatory duty does not apply to children aged 16 or 17, unless a listed ground or a prescribed circumstance applies. If you are unsure, it is worth getting advice.

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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