How Personal Injury Lawsuits Work in Ontario

A personal injury lawsuit is the formal court process used when an injured person seeks compensation from another person, business, municipality, insurer, property owner, driver, or other defendant.

Not every personal injury claim becomes a lawsuit. Some claims are investigated, documented, and resolved through insurance negotiations before formal court steps are needed. Other claims require litigation because fault is disputed, the injuries are serious, the insurer is taking an unreasonable position, or a limitation period is approaching.

The role of an Ontario personal injury lawyer is to assess liability, preserve limitation periods, gather medical and income-loss evidence, deal with insurers, evaluates settlement offer, prepares the client for each stage of the litigations, and decide whether the case should be resolved or advanced toward trial.

What does a personal injury lawyer do in an Ontario lawsuit?

A personal injury lawyer helps determine whether the injured person has a viable claim, who may be legally responsible, what deadlines apply, what evidence is needed, and whether a lawsuit is necessary.

In an Ontario personal injury lawsuit, the lawyer’s work could include investigating liability, collecting medical and employment records, preparing the statement of claim, dealing with insurers and defence counsel, preparing the injured person for discovery, obtaining expert evidence, assessing settlement offers, preparing for mediation, and deciding whether the case should proceed to trial.

The lawyer also has to reassess the case as the evidence develops. A claim that seems straightforward at the beginning might become more complicated if the injured person does not recover as expected, cannot return to work, needs surgery, develops chronic pain, or requires future care.

Not every personal injury claim needs a lawsuit

A lawsuit is not always the first step. Sometimes claims can be investigated and resolved even before a statement of claim is issued. That may happen where liability is relatively clear, the injuries are well defined, and the insurer is willing to exchange information and discuss settlement.

In other cases, a lawsuit becomes necessary. The defendant may deny fault. The insurance company may dispute the seriousness of the injuries. The limitation period may be approaching. The injured person may have ongoing losses that cannot be properly resolved through early negotiation.

Starting a lawsuit too early can add cost and complexity before the medical picture is clear. Waiting too long can create deadline problems. The decision depends on the limitation period, the evidence, the seriousness of the injury, and whether the other side is engaging reasonably.

Limitation periods in Ontario personal injury cases

Limitation periods are one of the first issues Ontario personal injury lawyers have to consider.

Ontario’s Limitations Act, 2002 creates a basic two-year limitation period from the day a claim is discovered. Discoverability can be a legal issue, and some claims involve special notice periods or different deadlines, but an injured person should not assume there is extra time. The claim should be assessed early enough to protect the right to sue.

Limitation periods matter because missing a deadline can prevent a claim entirely. Even when the parties are communicating with an insurance company, the injured person still needs to start a lawsuit before the limitation period expires.

Investigation before a lawsuit starts

Before a lawsuit is started, the lawyer usually investigates both liability and damages. Liability means who is legally responsible. Damages means what the injured person lost because of the incident.

The investigation could involve photographs, police reports, incident reports, witness information, maintenance records, insurance correspondence, medical records, employment records, income documents, and treatment history. In a serious injury claim, the lawyer may also need to understand prognosis, future treatment, ability to work, potential long-term care needs, and the effect of the injury on family life.

This stage matters because a personal injury lawsuit is not won by simply naming an injury. The evidence has to show what happened, how the defendant is legally responsible, how the injury was caused, and how the injury changed the person’s life.

Starting the lawsuit

Most Ontario personal injury lawsuits are started by issuing a statement of claim in the Superior Court of Justice. The Rules of Civil Procedure identify a statement of claim as the usual "originating process" for starting an action (lawsuit), subject to certain exceptions.

The statement of claim sets out the parties, facts being alleged, the legal basis for the claim, the injuries and losses being claimed, and the compensation being sought.

In a car accident lawsuit, the statement of claim may allege negligent driving. In a slip and fall case, it may allege that a property owner or occupier failed to take reasonable care. In a dog bite case, the claim may involve statutory and common law issues. In an assault, abuse, or negligent security case, the allegations may involve intentional wrongdoing, institutional responsibility, or failure to take reasonable protective steps.

The statement of claim is not evidence. It is the document that commences the lawsuit and frames the dispute.

The statement of defence

After the defendant is served, the defendant is required to deliver a statement of defence.

The defence may deny fault, dispute causation, minimize the injuries, challenge income loss, deny future care needs, allege contributory negligence, or argue that some losses are unrelated to the incident.

In car accident lawsuits, the defence will also rely on Ontario’s statutory threshold and deductible for pain and suffering damages. The insurer may argue that the plaintiff did not suffer a permanent serious impairment of an important physical, mental, or psychological function, or that any general damages award should be reduced by the deductible.

The statement of defence helps further frame the dispute between the parties. Some cases are mostly about who caused the incident. Others are mostly about medical causation, damages, credibility, threshold, income loss, or future care.

In personal injury cases, both the statement of defence and statement of claim are usually relatively boilerplate, and shed too much light on either side's litigation strategy.

Documentary disclosure

Once the pleadings are closed, the parties exchange relevant documents.

In a personal injury lawsuit, this often includes medical records, clinical notes and records, hospital records, diagnostic imaging, employment records, tax records, benefit records, photographs, incident reports, insurance documents, treatment records, and expert reports once they are obtained.

This stage takes time. Medical records may be spread across family doctors, hospitals, specialists, rehabilitation clinics, psychologists, physiotherapists, occupational therapists, and other providers. Employment and income records may also be needed if the injured person missed work, changed jobs, reduced hours, or could not return to the same work.

The amount of records is why personal injury law firms tend to have so many law clerks and administrative staff. Many letters need to be written to each doctor requesting their records and then payments made for the records.

Examination for discovery

Examination for discovery is one of the most important steps in Ontario personal injury lawsuits.

At discovery, lawyers have the opportunity to question the party on the other side of the case under oath. In a personal injury case, the plaintiff may be asked about the incident, injuries, prior medical history, treatment, work history, daily activities, recovery, income loss, family impact, and future limitations.

The defendant isalso be examined. In a car accident case, that may involve questions about how the collision happened. In an occupiers’ liability case, a property owner or representative may be asked about inspection systems, maintenance, cleaning procedures, prior complaints, lighting, weather response, or hazard removal.

Discovery is not the trial. It is a pre-trial process used to understand the other side’s evidence, obtain admissions, identify missing documents, and narrow the issues. It's not about making the other side look bad, but largely about understanding the other side's case and its strengths and weaknesses.

During discoveries, undertakings are provided. These are promises to provide further information or documents after the examination. In personal injury cases, undertakings can be important because they fill gaps in the evidence before mediation or settlement discussions.

Mediation and settlement discussions

The vast majority of Ontario personal injury lawsuits settle before trial. Mediation is a structured settlement meeting where the parties try to settle the case with the help of a neutral mediator. The mediator does not decide the case. The purpose is to help the parties assess risk, exchange positions, and see whether a settlement can be reached.

In Toronto, Ottawa, and Windsor, Ontario’s mandatory mediation program applies to most civil lawsuits, with certain exceptions.

Even where mediation is not mandatory, it can still be helpful. By the time a personal injury case reaches mediation, the parties may have exchanged pleadings, documents, discovery evidence, medical records, expert reports, and settlement positions. The insurer may have a clearer understanding of the risk of trial, and the injured person may have a clearer understanding of the strengths and weaknesses of the claim.

Offers to settle

Offers to settle are an important part of Ontario personal injury litigation. A settlement offer is not just a number. It can affect strategy, risk, and costs. An injured person needs to understand not only the gross offer, but also legal fees, disbursements, HST, deductions, repayment issues, litigation risk, delay, and future needs.

A strong offer may be worth accepting even if it is not perfect. A low offer may need to be rejected if it does not reflect the evidence or the seriousness of the injury. The decision depends on the likely trial range, the risk of losing, the cost and delay of continuing, and the injured person’s actual situation.

When an offer is made as a formal "Rule 49 offer", it means that there are consequences if the offer is not accepted and the side rejecting the offer does worse than what was offered to them before trial. If this happens it means the losing side will usually have to pay, or pay more, costs to the other side in place of their legal fees.

Expert evidence

Expert evidence is crucial for personal injury lawsuits. A treating doctor can explain treatment history, but a lawsuit may also require medical-legal opinions from specialists. Depending on the case, expert evidence can address diagnosis, causation, prognosis, future treatment needs, work capacity, future care, income loss, accident reconstruction, psychological injury, chronic pain, or catastrophic impairment.

Serious injury cases turn on expert evidence. A brain injury claim may need neurological, neuropsychological, psychiatric, occupational therapy, or vocational evidence. A spinal injury claim may involve orthopedic, neurosurgical, pain, functional, and future-care evidence. A major fracture case may require evidence about surgery, hardware, permanent restrictions, arthritis risk, or failed recovery.

Expert evidence can strengthen a case, but it also increases cost and complexity. A personal injury lawyer has to decide what evidence is actually needed and whether the cost of obtaining it is proportionate to the claim.

Rule 76 and simplified procedure

Some Ontario personal injury lawsuits proceed under Rule 76 simplified procedure.

Rule 76 applies where the plaintiff’s claim is for money, real property, or personal property and the total amount claimed is $200,000 or less, exclusive of interest and costs. The Rules of Civil Procedure state that simplified procedure shall be used where those conditions are met.

Rule 76 can be useful for the right personal injury case because it may provide a faster and more proportionate route to a judge-alone trial. Rule 76 actions are generally not tried with a jury, subject to limited exceptions.

Rule 76 is usually not the right procedure for catastrophic injury claims, major future-care claims, substantial income loss claims, or cases that require many experts and broader discovery.

Pre-trial conference

If a case does not settle earlier, it proceeds to a pre-trial conference.

A pre-trial is conducted by a judge or associate judge. The goal is to see whether the case can settle and, if not, whether the issues can be narrowed before trial. The parties may discuss liability, damages, expert evidence, trial length, witnesses, and the practical problems that could affect trial.

Pre-trial can be a serious settlement opportunity. By that stage, discoveries have usually happened, many records have been exchanged, and the parties have a clearer sense of the evidence. Sometimes judges provider their own informal opinion regarding the value of the case. The risks of trial are closer and more expensive.

Trial

If a personal injury lawsuit does not settle, it proceeds to trial. At trial, the plaintiff must prove the case. That usually means proving that the defendant was legally responsible, that the incident caused the injuries, and that the damages claimed are supported by the evidence.

The plaintiff almost always testifies. Experts may give evidence. Medical records, employment documents, photographs, reports, and other documents may be used. The defence may challenge causation, credibility, damages, prior medical history, work capacity, future care, and the connection between the incident and the claimed losses.

Some trials are before a judge alone. Some are before a judge and jury, depending on the type of case and the procedure. Jury risk can be especially important in car accident lawsuits because insurers may believe juries are more skeptical of certain injuries or damages claims. In Ontario, either side has the option to select a jury in most cases. Typically insurance companies like to choose a jury in typical car accident or slip and fall cases. However, if the case involves a drunk driving defendant, or other egregious conduct, a plaintiff may want a jury.

How car accident lawsuits are different

Car accident lawsuits have special features in Ontario. An Ontario car accident case will involve both an accident benefits claim and a lawsuit against the at-fault driver.

The accident benefits claim is usually against the injured person’s own insurer or another priority insurer. The tort lawsuit is against the at-fault driver, usually defended by that driver’s insurer.

The two claims are separate, but they overlap in practical ways. Medical records, treatment plans, insurer examinations, income loss evidence, and functional evidence may affect both.

The tort lawsuit also involves Ontario’s statutory threshold and deductible for pain and suffering damages. This makes car accident litigation different from many other personal injury claims. A person may be genuinely injured and still face arguments about whether the legal threshold has been met.

Motorcycle accident cases, dirtbike accidents, ATV accidents, and snowmobile accidents usually proceed in a similar manner to car accident cases despite involving recreational vehicles.

How serious injury lawsuits are different

Serious injury lawsuits often require more time, evidence, and expert involvement. A claim involving a brain injury, spinal cord injury, amputation, serious fracture, chronic pain disorder, psychological injury, catastrophic impairment, or major loss of income may not be ready to value early. The medical picture may change. Treatment may fail. A return to work may not last. Future care needs may become clearer only after specialists and rehabilitation providers have assessed the person.

In serious injury cases, damages are not limited to pain and suffering. They may include income loss, loss of competitive advantage, future care costs, housekeeping and home maintenance losses, out-of-pocket expenses, attendant care issues, and Family Law Act claims.

How long does a personal injury lawsuit take?

The timeline depends on the case. Some claims resolve early. Others take years. The timeline can be affected by the severity of the injuries, medical recovery, the need for expert reports, the availability of court dates, the number of parties, the insurer’s position, discovery disputes, mediation timing, and whether trial is required.

A serious injury case may take longer because the plaintiff’s medical condition needs time to stabilize. Settling too early can be risky if future care, permanent impairment, income loss, or long-term disability are not yet understood. A current lack of judicial resources in Ontario often contributes to further delay.

How legal fees and disbursements are handled

Most Ontario personal injury cases are handled under a contingency fee agreement.

That means the lawyer’s fee is usually based on a percentage of the amount recovered, rather than hourly billing throughout the case. The client should also understand disbursements, which are expenses incurred to move the case forward. These can include medical records, expert reports, court filing fees, investigation expenses, transcripts, and other case costs.

The Law Society of Ontario says lawyers and paralegals must provide clients with the Contingency fees: What you need to know consumer guide before entering into a contingency fee agreement, and must use the Standard Form Contingency Fee Agreement in most percentage-based contingency-fee matters.

For more detail, see our article on how much personal injury lawyers cost in Ontario.

Choosing a personal injury lawyer for a lawsuit

Choosing a personal injury lawyer is not only about choosing the best personal injury lawyer in Ontario.

A client may want to understand who will handle the case on a day to day basis, how communication will work, what kinds of injury claims the lawyer regularly handles, whether the lawyer understands the relevant insurance issues, and how the lawyer approaches settlement and litigation.

In serious injury cases, it is also important to understand whether the lawyer has experience with medical evidence, expert reports, future care claims, income loss, and long-term impairment.

It's also important that people trust their instincts. You want to choose a lawyer who will treat you fairly and put your interests firsts even if it doesn't align with their own interest. Additionally, your lawyer will be reviewing your medical records and learning intimitate details about your life. This means it's important to choose someone you feel comfortable discussing personal issues.

For more detail, see our guide on how to choose a personal injury lawyer in Ontario.

Can a client change lawyers after a lawsuit starts?

Yes. A personal injury client can change lawyers, including after a lawsuit has started. The practical issues are file transfer, fees, disbursements, deadlines, and continuity. If a lawsuit is underway, there are procedural steps needed to change the lawyer of record.

Sometimes the issue is communication, strategy, expectations, or a breakdown in confidence. The transition should be handled carefully so that deadlines, documents, settlement positions, and medical evidence are not lost.

For more detail, see our article on whether you can switch personal injury lawyers in Ontario.

Key takeaways

A personal injury lawsuit is the formal court process used to pursue compensation when an injury claim cannot be resolved informally.

The role of an Ontario personal injury lawyer includes assessing liability, preserving limitation periods, gathering evidence, dealing with insurers, preparing the lawsuit, evaluating settlement, and advancing the case toward mediation or trial if necessary.

In Ontario, the basic limitation period is generally two years from when the claim is discovered, although exceptions and special notice periods may apply.

A lawsuit usually starts with a statement of claim, followed by a statement of defence.

The parties exchange documents, attend examinations for discovery, answer undertakings, and often participate in mediation or settlement discussions.

Expert evidence can be important, especially in serious injury cases.

The vast majority of cases settle before trial, but some require pre-trial and trial.

Car accident lawsuits are different because they may involve both accident benefits and a tort claim, as well as threshold and deductible issues.

Rule 76 simplified procedure may apply to some personal injury lawsuits of $200,000 or less, but it is usually not the right procedure for catastrophic or high-value serious injury claims.

The right litigation strategy will depend on liability, damages, medical evidence, insurance issues, procedure, timing, and the injured person’s long-term needs.