- Pleadings are the formal written documents that parties exchange at the start of litigation to set out their positions.
- What It Does A statement of claim launches the lawsuit.
- What It Does A defendant served with a statement of claim has a fixed number of days (tied to how service was effected — check the current Rules) to serve and file a statement of defence.
The pleadings stage of an Ontario civil lawsuit — the exchange of a statement of claim and statement of defence — is more than paperwork. These documents define the battleground. Every fact a party wants to rely on at trial must first appear in a pleading. Every legal issue must be pleaded. What gets left out is, for practical purposes, left out of the case.
This guide explains what pleadings are, what must go in them, the deadlines that apply, and the most common mistakes to avoid.
What Are Pleadings?
Pleadings are the formal written documents that parties exchange at the start of litigation to set out their positions. In an Ontario civil action under the Rules of Civil Procedure, the core pleadings are:
- Statement of Claim — filed by the plaintiff (the party suing)
- Statement of Defence — filed by the defendant (the party being sued)
- Reply — filed by the plaintiff in response to new facts raised in the defence (optional but important if the defence raises new matters)
Additional pleadings arise when defendants sue back (Counterclaim) or bring in third parties (Third Party Claim).
The Statement of Claim
What It Does
A statement of claim launches the lawsuit. It tells the court and the defendant:
- Who the parties are (names, addresses, capacity)
- What happened (the material facts — not evidence, just the key facts)
- What legal wrongs the plaintiff alleges (negligence, breach of contract, fraud, etc.)
- What the plaintiff wants the court to order (damages, an injunction, a declaration, costs)
"Material Facts" vs. Evidence
Ontario pleadings require material facts — the essential events that give rise to the claim — but not the evidence that will prove those facts. Pleading evidence is improper. Pleading conclusions of law without supporting facts is also improper. Getting this distinction right is tricky and is where self-represented parties often go wrong.
Endorsement of Claim
When you file a statement of claim, the court clerk stamps it and assigns a court file number. The plaintiff then has a set period (check the current Rules) to serve it on each defendant.
Limitation Periods
The Limitations Act generally imposes a two-year limitation period starting from when the plaintiff knew (or reasonably ought to have known) of the claim. This clock typically starts running well before a lawsuit is filed. If you miss the limitation period, your claim can be dismissed even if it is otherwise meritorious.
Some claims — against municipalities, professionals, or arising from particular statutes — have different or shorter limitation periods. Always confirm the applicable period with a lawyer before assuming you have two years.
The Statement of Defence
What It Does
A defendant served with a statement of claim has a fixed number of days (tied to how service was effected — check the current Rules) to serve and file a statement of defence. The defence must respond to every allegation in the claim:
- Admit what is true
- Deny what is not true
- Plead no knowledge of facts the defendant genuinely does not know (though this is not a safe blanket option)
Allegations not specifically denied are deemed admitted. This is a trap for self-represented defendants who think silence is neutral — it is not.
Raising Positive Defences
Beyond responding to the claim, the defence must plead any affirmative defences the defendant wants to rely on, such as:
- Contributory negligence (the plaintiff partly caused their own loss)
- Limitation period (the claim is too old)
- Payment or set-off (money already paid reduces what is owed)
- Waiver or release (the plaintiff gave up the right to sue)
If these defences are not pleaded, they generally cannot be argued at trial.
Counterclaim
If the defendant believes the plaintiff owes them something, they can include a Counterclaim with the defence. This turns the defendant into a plaintiff on those new claims. The plaintiff then becomes a defendant to the counterclaim and must serve a Defence to Counterclaim.
The Reply
A reply is the plaintiff's response to new matters raised in the defence — not a chance to repeat the claim or add new causes of action, but to answer affirmative defences the plaintiff disputes. If the defendant pleads a limitation period defence and the plaintiff has a response (for example, the discoverability date was later), the reply is where that argument appears.
Amending Pleadings
Pleadings can be amended — but with more difficulty as the case progresses. Early amendments are made as of right; later amendments require consent of the other parties or leave (permission) from the court. Courts generally allow amendments that serve justice if they will not prejudice the other side in a way that cannot be compensated by costs. However, amendments to add entirely new claims close to trial may be refused.
Common Pleading Mistakes
| Mistake | Consequence |
|---|---|
| Failing to plead a material fact | Cannot rely on that fact at trial |
| Missing the limitation period | Claim may be permanently barred |
| Pleading evidence or law instead of facts | Opposing party can move to strike |
| Failing to specifically deny allegations | Allegations are deemed admitted |
| Omitting an affirmative defence | Cannot raise that defence later |
| Not including a counterclaim at the start | May require court leave later |
Frequently asked questions
How long does a defendant have to file a statement of defence?
The deadline depends on how the statement of claim was served and where the defendant is located. Defendants served in Ontario generally have 20 days after service (as of writing — verify the current Rules). Service outside Ontario gives more time. Missing this deadline can result in the plaintiff noting the defendant in default.
What happens if the defendant does not file a defence?
The plaintiff can have the defendant noted in default, which means the defendant loses the right to participate in the proceeding. The plaintiff can then move for a default judgment.
Can I change my pleading after it is filed?
Yes, but the process becomes more restrictive over time. Early in the proceeding, amendments are made as of right. Later, you need a court order. Courts generally allow amendments that do not prejudice the other side.
Do pleadings become public?
Court files in Ontario are generally accessible to the public. Pleadings filed in the Superior Court of Justice can be viewed by anyone who attends the courthouse and makes a request. Sensitive information in pleadings is not automatically sealed — a court order is required to restrict access.
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