Ontario Incident Report: WSIB Form 7 Guide

Last updated: March 2026

Something happened on your Ontario job site and now you need to figure out who to report it to and how fast. The answer is not simple because Ontario has two separate agencies, WSIB and the Ministry of Labour, each with their own forms, timelines, and penalties. At Safety Evolution, we help Ontario contractors cut through this process so you file the right reports with the right people before the deadlines hit.

An incident report in Ontario is a formal written record of a workplace event that caused (or could have caused) injury, illness, or property damage. In Ontario, incident reporting involves two separate obligations: reporting to the Workplace Safety and Insurance Board (WSIB) for workers' compensation purposes, and reporting to the Ministry of Labour, Immigration, Training and Skills Development (MLITSD) under the Occupational Health and Safety Act.

Who Regulates Workplace Incident Reporting in Ontario?

Ontario employers answer to two agencies, and each has its own forms, timelines, and penalties.

The WSIB administers workers' compensation in Ontario. When a worker is injured or becomes ill due to work, the WSIB manages the claim, provides benefits, and tracks employer reporting compliance. The primary form is the Form 7 (Employer's Report of Injury/Disease).

The MLITSD enforces the Occupational Health and Safety Act (OHSA). For critical injuries, fatalities, and certain other incidents, employers must notify the Ministry directly. The Ministry can dispatch inspectors, issue orders, and lay charges.

Under the OHSA, employers must also notify the workplace JHSC or health and safety representative (and the trade union, if applicable) about reportable incidents.

Most Ontario contractors think they only need to deal with one agency. They're wrong. The WSIB and the MLITSD operate independently. Filing a Form 7 with the WSIB does not satisfy your obligation to notify the Ministry of Labour about a critical injury. Miss either one, and you're exposed.

When Do You Need to File WSIB Form 7?

You must file a Form 7 with the WSIB when you learn that a worker has been injured or become ill due to work AND any of the following applies:

• The worker requires health care (anything beyond basic first aid, including a doctor's visit, prescription medication, or hospital treatment)
• The worker is absent from regular work
• The worker earns less than regular pay (such as reduced hours)
• The worker requires modified work at less than regular pay
• The worker requires modified work at regular pay for more than 7 calendar days after the date of the accident

You do NOT need to file if the worker received only first aid (cleaning a minor cut, applying a bandage, or an ice pack) and returned to regular duties within 7 days.

Here's where contractors get tripped up: a worker who goes to a walk-in clinic for what turns out to be nothing still triggers the Form 7 requirement. The moment a doctor or nurse practitioner provides treatment, it crosses from "first aid" into "health care" under WSIB policy. A tetanus shot after a minor cut? That's health care. File the Form 7.

WSIB Form 7: Step-by-Step Filing Process

Filing a Form 7 is straightforward if you have the information ready. Here's what each section requires:

Name, address, date of birth, job title, Social Insurance Number, and employment details (hire date, regular work schedule).

Your WSIB account number, business name, address, and contact information for the person filing the report.

Date and time of the accident. Where exactly it happened. What the worker was doing. What happened and how. What body part was injured.

Name and address of the health care provider who treated the worker. Whether the worker went to a hospital.

Whether the worker missed time, the date they stopped working, and when they returned (or are expected to return). Details on any modified duties.

The worker's pay rate, hours, and earnings details so the WSIB can calculate benefits.

• Online through the WSIB's eServices portal at wsib.ca (fastest method)
• Fax to 416-344-4684 or 1-888-313-7373
• Mail to WSIB, 200 Front Street West, Toronto, ON M5V 3J1

You must give the injured worker a copy of the completed Form 7.

Ontario Employer Reporting Deadlines: The Timeline That Matters

This is where Ontario gets unforgiving. Every deadline is firm.

• $250 if filed after the 3-business-day window
• $1,000 if filed more than 30 calendar days late

These are automatic administrative penalties, charged directly to your WSIB account.

What Counts as a "Critical Injury" in Ontario?

Under O. Reg. 420/21, a critical injury is an injury of a serious nature that:

• Places life in jeopardy
• Produces unconsciousness
• Results in substantial loss of blood
• Involves the fracture of a leg or arm (but not a single finger or toe)
• Involves the amputation of a leg, arm, hand, or foot (but not a single finger or toe)
• Consists of burns to a major portion of the body
• Causes the loss of sight in an eye

The Ministry considers the "leg" to include ankle and foot, and "arm" to include wrist and hand. Also important: a fracture or amputation of more than one finger or toe IS considered critical.

When a critical injury or fatality occurs, you must:

1. Call 911 if it's an emergency
2. Call the MLITSD at 1-877-202-0008 immediately
3. Secure the scene and do not disturb anything (OHSA s. 51(2))
4. Notify the JHSC or health and safety representative and the union
5. Submit a written report to the MLITSD within 48 hours (use the Ontario government form available at forms.mgcs.gov.on.ca)
6. File WSIB Form 7 within 3 business days

You can only disturb the accident scene to save a life, relieve human suffering, maintain essential public utilities, prevent unnecessary property damage, or if a Ministry inspector gives permission.

One blunt truth: most small contractors have never actually called the Ministry of Labour hotline. They don't have 1-877-202-0008 saved in their phone. They find out they were supposed to call "immediately" when the inspector shows up asking why they didn't. By then, the scene has been cleaned up, witnesses have gone home, and you're explaining yourself in a situation where silence would have been better. Post that number in your site trailer today.

OHSA Penalties for Non-Compliance

Ontario now carries the highest workplace safety penalties in Canada as of the Working for Workers Four Act, 2024:

• Corporations: Up to $2,000,000 per offence
• Directors and officers: Up to $1,500,000 personally
• Individuals: Up to $500,000 and/or up to 12 months imprisonment
• Repeat corporate offences resulting in death or serious injury within 2 years: minimum fine of $500,000

These are OHSA prosecution penalties, separate from WSIB administrative fines. They apply when the Ministry lays charges for failing to report critical injuries, disturbing accident scenes, or other OHSA violations.

What Information Should Your Internal Incident Report Include?

Beyond the mandatory government forms, smart contractors maintain their own internal incident reports. Your internal report should capture everything the government forms ask for, plus:

• Photos and diagrams of the scene before anything is moved
• Witness statements collected the same day
• Root cause analysis identifying what went wrong and why
• Corrective actions taken to prevent recurrence
• Training records confirming the worker was trained on the task

A thorough internal report protects you in three ways: it feeds accurate information into the Form 7, it gives you documentation if the Ministry investigates, and it drives real safety improvements for your crew. Our 7 essential elements of an incident report guide breaks down what to include in detail.

If you want a structured process for your crew, download our free Incident Report and Investigation Kit that includes templates built for Canadian contractors.

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For a deeper look at what goes into a strong incident report, read our guide on effective workplace incident reporting. If your crew needs help building an incident reporting process that actually works, Safety Evolution's consulting team in Toronto can set it up for you.