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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Family Law & Divorce Ontario » Child Custody & Support Ontario » How Ontario Courts Treat a Parent Who Leaves Children Home Alone Too Young

How Ontario Courts Treat a Parent Who Leaves Children Home Alone Too Young

27 Jun 2026 4 min read No comments Child Custody & Support Ontario
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Under Ontario’s Child, Youth and Family Services Act (CYFSA), leaving a child under 16 home alone without “reasonable” supervision is illegal. If your co-parent regularly leaves young children unattended, you can file a Motion to Change parenting time, which is completely free of charge in Ontario family courts.

Discovering that your ex-partner is leaving your young child home alone can be incredibly distressing. In Ontario, the law surrounding when a child can be left unattended is a mix of provincial statutes and common sense. Whether you live in Hamilton, London, or Toronto, the safety of the child is the paramount concern for both the courts and child protection agencies.

Contrary to popular belief, there is no “magic age” at which a child can be left alone in Canada, but there are strict legal guidelines. 🚨 The federal Criminal Code makes it an offence to abandon a child under 10, while Ontario’s CYFSA requires parents to provide “reasonable” supervision for anyone under 16. If your co-parent is showing poor judgment, contacting a family lawyer from our directory to review your decision-making responsibility is a crucial next step.

Step-by-Step Process for Modifying Parenting Time in Ontario

If a parent consistently leaves a child in an unsafe situation, it constitutes a material change in circumstances. This gives you the right to ask the Superior Court of Justice or the Ontario Court of Justice to change your current order. Here is how you can protect your child.

Step 1: Documenting the Incidents Carefully

Before taking legal action, you must gather solid evidence. 📝 Keep a detailed log of every time the child is left alone, including dates, durations, and the child’s age. Text messages from your ex admitting they left the child to run errands, or statements from neighbours, can be powerful evidence in family court.

Step 2: Contacting the Children’s Aid Society (CAS)

If you believe your child is in immediate physical or emotional danger, you have a legal duty to report it. Calling the local CAS (such as the Catholic Children’s Aid Society of Toronto or the Peel CAS) will trigger an investigation. While a CAS file can complicate family litigation, their independent safety report carries massive weight with Ontario judges.

Step 3: Filing a Form 15 Motion to Change

To officially change the parenting schedule, your lawyer will draft a Form 15 (Motion to Change) and a sworn Form 14A Affidavit. 📂 This document will explain to the judge exactly why the other parent’s behaviour is dangerous and why you need sole decision-making responsibility or restricted, supervised parenting time for the ex-partner.

Step 4: Serving the Documents

The filed motion must be personally served on your ex-partner. In Ontario, you cannot hand them the papers yourself; you must use a process server or a neutral third party. The other parent then has 30 days to file a Response to Motion to Change.

Step 5: Attending a First Appearance or Case Conference

Before a judge makes a final ruling, both parents and their lawyers will attend a Case Conference. 👥 This is an informal meeting with a judge to see if the issue can be settled. The judge may issue a temporary order forbidding the ex-partner from leaving the child unattended while the case proceeds.

How Much Does it Cost in Ontario?

Family litigation, especially cases involving child safety, requires professional legal guidance. 💵 Budgeting for a Motion to Change involves several provincial fees in CAD.

  • Court Filing Fees: There are no court filing fees ($0 CAD) for submitting a Motion to Change in Ontario family courts.
  • Process Server Fees: Hiring a professional to serve your ex-partner typically costs $100 to $250 CAD.
  • Lawyer Fees: Having a family lawyer handle the entire motion process usually costs between $2,500 and $7,000 CAD, depending on whether it is contested.

Key Differences: Under 10 vs. Under 16 Rules

FeatureChildren Under 10 (Criminal Code)Children Under 16 (Ontario CYFSA)
Legal StandardCriminal offence to abandon or expose to danger.Must make provision for “reasonable” supervision.
Enforcement AgencyLocal Police Services.Children’s Aid Society (CAS).
ConsequencePotential criminal record and jail time.Child protection involvement or loss of parenting time.

How Long Does the Process Take?

If there is an immediate risk of harm, your lawyer can file an emergency “ex parte” motion, which can be heard by an Ontario judge in 24 to 48 hours. A standard Motion to Change, however, typically takes 4 to 8 months to reach a final resolution.

Frequently Asked Questions (FAQ)

At what age can a child legally babysit siblings in Ontario?

There is no specific legal age. A 12-year-old might be mature enough to babysit for an hour, but it depends entirely on the child’s maturity, the length of time, and the safety of the environment, as determined by the parents’ reasonable judgment.

Can I withhold parenting time if they leave the child alone?

Generally, you cannot unilaterally deny court-ordered parenting time unless the child is in immediate, severe danger. You should contact a lawyer or CAS immediately to get legal authority to change the schedule.

What does “reasonable provision” mean under the CYFSA?

It means the court looks at the context. Leaving a mature 14-year-old alone for two hours after school is usually reasonable. Leaving an 8-year-old alone overnight is absolutely not.

Can this affect spousal support payments?

No. Poor parenting choices may result in a loss of parenting time, which could indirectly increase the other parent’s child support obligations, but it does not directly impact spousal support.

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