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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Workers’ Compensation (WSIB) Ontario » WSIB Claims & Workplace Injuries Ontario » What Happens If You Re-Injure Yourself During WSIB Modified Work in Ontario?

What Happens If You Re-Injure Yourself During WSIB Modified Work in Ontario?

15 Jun 2026 6 min read No comments WSIB Claims & Workplace Injuries Ontario

If you suffer a re-injury during modified work in Ontario, you must stop the activity immediately and report it. The WSIB will determine if it is a recurrence of your old injury or a new accident. You may be entitled to reinstated full Loss of Earnings (LOE) benefits, and you must update your WSIB case manager by filing a Worker’s Report of Injury (Form 6).

Returning to work after a workplace injury is a critical milestone in your recovery journey. However, sometimes the modified duties provided by your employer can trigger your previous symptoms or lead to a completely new injury. Whether you are working in a busy warehouse in Mississauga, an office in Toronto, or a manufacturing plant in Hamilton, understanding your rights under the Workplace Safety and Insurance Act (WSIA) is essential.

Many injured workers feel anxious that reporting a setback might jeopardise their current employment or their WSIB claim. This is a common misconception. In Ontario, the WSIB system is designed to support you if a Return to Work (RTW) plan fails due to medical reasons. If you find yourself in this complex situation, reviewing the step-by-step process below will help protect your health and your financial stability. Consulting a local WSIB lawyer from our directory can also provide you with tailored guidance. 📝

Step-by-Step Process for Handling a Re-Injury at Work in Ontario

Navigating a re-injury requires prompt action. The Workplace Safety and Insurance Board (WSIB) distinguishes between a “recurrence” (a flare-up of your original injury) and a “new accident” (an entirely new incident occurring while on modified duties). Regardless of the classification, the immediate steps you must take remain the same across the province.

Step 1: Stop Working and Notify Your Employer

The moment you feel a sharp pain or realise your condition has worsened, you must stop the modified task. Continuing to work through the pain can cause severe, long-term damage. Notify your supervisor, manager, or health and safety representative immediately. Inform them exactly what task you were doing and how your symptoms flared up. Make sure an internal incident report is documented before you leave the premises. 🚨

Step 2: Seek Immediate Medical Attention

Your health is your top priority. Visit your family doctor, a local walk-in clinic, or the nearest hospital emergency room. When speaking with the healthcare provider, be very clear that the pain started or worsened while performing modified duties at work. This ensures they correctly complete the Health Professional’s Report (Form 8). A detailed medical record is the strongest piece of evidence for your WSIB file.

Step 3: Determine Recurrence vs. New Accident

It is important to understand how the WSIB will classify your setback. A recurrence happens when your original injury gets worse without a specific new incident (for example, your previously injured back spasms while sitting at your modified desk). A new accident happens if a distinct, new event occurs (for example, you slip and fall while performing modified duties, breaking your arm). Your case manager will use your medical reports to make this decision. 🤔

Step 4: File the Required WSIB Forms

Paperwork is crucial in Ontario’s compensation system. If the event is a new accident, you must file a new Worker’s Report of Injury/Disease (Form 6). If it is a recurrence, you must notify your WSIB adjudicator or case manager in writing and submit an updated Functional Abilities Form (FAF) completed by your doctor. Your employer is also obligated to submit a new Form 7 if there is lost time from work or if you require healthcare.

Step 5: Adjust Your Return to Work (RTW) Plan

Once your new medical restrictions are documented, your employer must adjust your modified duties to safely accommodate your current physical state. If your employer in Ottawa or Brampton cannot provide safe work that meets these new restrictions, you should stop working and WSIB may reinstate your full Loss of Earnings (LOE) benefits. If you encounter disputes with your employer regarding safe duties, it is highly recommended to seek assistance from an experienced local lawyer. 💼

Recurrence vs. New Accident in Ontario

To help clarify how the WSIB assesses these two different scenarios, please review the comparison table below. Correct classification impacts which claim file is used and how your benefits are calculated.

FeatureRecurrence of Original InjuryNew Workplace Accident
DefinitionA worsening of the original injury with no new external incident.A new, distinct incident causing injury (even if it involves the same body part).
WSIB Claim FileProcessed under your existing, original WSIB claim number.Requires a brand new WSIB claim number to be opened.
Benefit CalculationUsually based on your earnings at the time of the original accident.Based on your earnings at the time of the new accident.
Forms RequiredUpdated FAF, medical notes, and direct communication with Case Manager.New Form 6 (Worker), New Form 7 (Employer), New Form 8 (Doctor).

How Much Does It Cost to Appeal a Re-Injury Decision?

Filing a claim with the WSIB is entirely free. However, if your recurrence claim is denied, you may need to file an Intent to Object and potentially appeal to the Workplace Safety and Insurance Appeals Tribunal (WSIAT).

  • WSIB Filing Fees: $0 CAD. The provincial system does not charge injured workers to file forms or appeals.
  • Medical Records: Doctors may charge between $50 CAD to $150 CAD for detailed medical letters or chart copies.
  • Lawyer Fees: Most Ontario WSIB law firms work on a contingency fee basis for appeals. This means they take a percentage (usually 15% to 30%) of your retroactive benefit payout. If you do not receive a payout, you generally do not pay legal fees.

How Long Does the Process Take?

Timelines can vary based on the complexity of your medical file and the backlog at the WSIB offices.

  • Reporting: You must report a new injury or recurrence within 6 months of it happening, though immediate reporting is always best.
  • WSIB Decision: Once all forms (Form 6, 7, and 8) are submitted, a standard decision regarding a recurrence or new accident typically takes 2 to 6 weeks.
  • Appeal Timelines: If denied, you have 6 months to file an Intent to Object for claim decisions, and only 30 days for Return to Work disputes. WSIAT appeals can take 12 to 18 months to be heard.

Frequently Asked Questions (FAQ)

Can my employer force me to stay on modified duties if I am in pain?

No. Your employer cannot override your doctor’s medical advice. If your doctor determines that the modified duties are unsafe and updates your Functional Abilities Form (FAF), your employer must either provide different, safe work or allow you to go off work while receiving WSIB benefits.

What happens to my wages if I cannot do the modified work anymore?

If your medical evidence shows you can no longer perform the modified work, and your employer has no other safe duties, the WSIB will generally reinstate your Loss of Earnings (LOE) benefits. This is typically 85% of your pre-injury net average earnings.

Will a re-injury negatively impact my employer’s WSIB premiums?

If the incident is classified as a new accident resulting in lost time, it may impact their premiums. However, this should never deter you from reporting an injury. Retaliation or discouraging you from reporting is illegal under the WSIA.

Should I hire an Ontario lawyer for a recurrence claim?

While not strictly mandatory, consulting a WSIB lawyer is highly beneficial if your case manager denies your recurrence claim or if your employer is pressuring you into unsafe work. You can find experienced legal representation through our directory.

Do I need to fill out a new Form 6 for a recurrence?

Generally, no. A recurrence is processed under your existing claim number. However, you must immediately notify your case manager in writing or over the phone, and provide an updated doctor’s note or FAF. A new Form 6 is only needed for a completely new accident.

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