Mediation Explained: How It Works in Ontario Civil Disputes

If you are involved in a civil lawsuit in Ontario, the word "mediation" will come up early and often. Many people picture it as an informal chat between neighbours — but court-connected mediation is a structured, strategic process that resolves the majority of civil cases before trial. Understanding how mediation works can save you time, money, and significant stress.

Mediation is a confidential, voluntary process (though it can be court-ordered) in which a neutral third party — the mediator — helps the parties reach a negotiated settlement. The mediator does not decide who wins. That distinction separates mediation from arbitration and from a judge's ruling.

Why Mediation Matters in Ontario

Ontario's Rules of Civil Procedure include a mandatory mediation program. As of writing, mandatory mediation applies automatically in Toronto, Ottawa, and Essex County for most actions proceeding under the ordinary (non-simplified) procedure. The mediation must take place within a set number of months after the first defence is filed — verify the current timeline with your lawyer, because the rules have been updated several times and deadlines are strict.

Even outside those regions, parties can agree to mediate voluntarily, and judges routinely encourage it at case management conferences. Courts have made it clear that parties who refuse reasonable attempts to settle can face cost consequences later.

The Mediation Process Step by Step

1. Selecting a Mediator

Parties either agree on a private mediator or use the list maintained by the mediation co-ordinator in mandatory-mediation regions. Private mediators charge hourly rates (fees are shared by both sides unless you negotiate otherwise). Some mediators specialize in commercial, personal injury, or family matters — match the mediator to the dispute type.

2. Mediation Statements

Before the session, each party typically submits a mediation brief or statement. This is a concise document setting out:

• The key facts from your perspective
• Your legal position
• The relief you are seeking
• Anything you want the mediator to understand privately (sent only to the mediator, not the other side)

A well-crafted brief can shape the mediator's thinking before anyone enters the room. Treat it seriously.

3. The Opening Session

On the day, all parties and their lawyers meet together. The mediator explains the ground rules: everything said is confidential and cannot be used as evidence at trial (with narrow exceptions under Ontario's Evidence Act). Each side gives a brief opening statement.

4. Caucuses (Private Meetings)

The mediator usually separates the parties into different rooms and shuttles between them. This is where the real negotiation happens. The mediator may:

• Reality-test each side's position
• Probe the strengths and weaknesses of your case
• Float proposals without committing either party
• Help each side understand what the other values most

A good mediator is not simply a messenger. They actively guide parties toward a zone of possible agreement.

5. Settlement or Impasse

If the parties reach agreement, the lawyers draft minutes of settlement — a binding contract — before anyone leaves. Do not leave without a signed document if you have a deal. Verbal agreements at mediation are harder to enforce.

If no deal is reached, the case continues toward trial. Mediation is without prejudice: nothing said can be used against you. The process simply did not work that day, and both sides are no worse off legally.

What Mediation Is NOT

What to Bring and How to Prepare

• Key documents: contracts, photographs, invoices, correspondence — anything your lawyer needs to anchor your position.
• A realistic number: know what you will accept before you walk in. Mediation requires compromise.
• Decision-making authority: if you are representing a corporation, the person in the room must have actual authority to settle, or the day is wasted.
• Emotional readiness: mediation can feel personal. Prepare to hear the other side's version of events without reacting in the room.

Costs of Mediation

Mediator fees are shared by the parties (typically split equally, though negotiable). Private mediators in Ontario can range from a few hundred dollars per hour to significantly more for experienced commercial mediators. Each party also pays their own lawyer's fees for preparing and attending.

Despite those costs, mediation almost always costs far less than proceeding to trial. A trial in the Ontario Superior Court can run tens of thousands of dollars in legal fees — and take years.

Frequently asked questions