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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Workers’ Compensation (WSIB) Ontario » WSIB Claims & Workplace Injuries Ontario » WSIB Coverage for Secondary Injuries Sustained During Physiotherapy in Ontario

WSIB Coverage for Secondary Injuries Sustained During Physiotherapy in Ontario

3 Jul 2026 5 min read No comments WSIB Claims & Workplace Injuries Ontario
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In Ontario, if you suffer a new injury or severely aggravate your condition while participating in a WSIB-approved physical rehabilitation program, the WSIB generally accepts liability for this secondary injury (sequelae). You must report the incident immediately to ensure your Loss of Earnings (LOE) and medical benefits are expanded to cover the new damage.

Recovering from a workplace accident is rarely a straight line. Often, injured workers are required by the Workplace Safety and Insurance Board (WSIB) to attend intensive physiotherapy or work-hardening programs to get back on their feet. But what happens if the very treatment designed to heal you ends up hurting you? It is surprisingly common for a worker to tear a muscle, slip at a clinic, or severely aggravate a spinal injury while performing exercises mandated by their WSIB physiotherapist.

Under the Ontario Workplace Safety and Insurance Act (WSIA), you are not left to fend for yourself if this happens. The law recognizes a concept known as “secondary conditions” or “sequelae.” If the WSIB sent you to a specific clinic in Kitchener, Vaughan, or Sudbury, and you were injured as a direct result of that authorized treatment, the WSIB is generally responsible for the new injury as if it occurred on the factory floor. 🔮 Understanding how to link this secondary injury to your original claim is complex, and often requires the tactical advice of an experienced workers’ compensation lawyer.

Step-by-Step Process for Claiming a Secondary Injury in Ontario

Proving that a new injury was caused by physiotherapy, rather than a pre-existing condition or an incident at home, requires immediate action and flawless medical documentation.

Step 1: Report the Incident to the Treating Therapist Immediately

The moment you feel a snap, tear, or extreme pain during an exercise, stop immediately. You must clearly state to the physiotherapist or kinesiologist that the specific exercise caused a new injury. Ensure that the clinic documents this incident in their daily chart notes. If it is not recorded in the clinic’s file on the day it happens, proving it later becomes incredibly difficult.

Step 2: Seek a Medical Reassessment

Do not just go home and hope it feels better. You must visit your family doctor or a walk-in clinic to have the new injury formally diagnosed. Tell the doctor exactly how it happened during your WSIB-mandated therapy. The doctor must submit an updated medical report to the WSIB detailing the new diagnosis and how it relates to the rehabilitation process.

Step 3: Notify Your WSIB Case Manager

You must contact your WSIB Case Manager or Adjudicator in writing as soon as possible. Explain the incident and formally request that the new body part or condition be added to your allowed entitlements under your existing claim number. You can do this through the WSIB online portal.

Step 4: Request an Update to Your Allowed Entitlements

The WSIB will review the clinic’s notes and your doctor’s report. If accepted, they will officially update your claim to include the secondary condition. This means your Loss of Earnings (LOE) benefits may be extended, and you may receive funding for surgery or different therapies required to fix the new issue.

Step 5: Appeal to the WSIAT if Denied

WSIB adjudicators frequently deny secondary injury claims, blaming them on “natural aging” or “pre-existing degeneration.” If you receive a denial letter, you have the right to appeal. The final level of appeal is the Workplace Safety and Insurance Appeals Tribunal (WSIAT), where a specialized law firm can present medical evidence to prove the clinic caused your secondary injury.

How Much Does it Cost to Appeal a WSIB Decision in Ontario?

Cost TypeTypical Expense in Ontario
Filing the Appeal (Intent to Object)Free. The WSIB does not charge a filing fee to submit an appeal.
Medical Evidence (Independent Assessment)If you need a private specialist to prove the physio caused the injury, it can cost $1,500 to $3,500 CAD.
Lawyer / Paralegal FeesMost WSIB law firms charge a contingency fee (usually 15% to 30% of the back-pay won) or a block fee for WSIAT hearings.
Potential Reward (NEL Payout)Adding a secondary injury can significantly increase your Non-Economic Loss (NEL) lump-sum payout upon maximum recovery.

How Long Does It Take to Approve a Secondary Claim?

You must report this secondary injury to the WSIB within 10 calendar days of its occurrence, as it constitutes a “material change in circumstances” under Section 23(3) of the Workplace Safety and Insurance Act and WSIB Operational Policy 22-01-02. ⏱ Waiting up to 6 months is a common mistake; failing to report this change within the 10-day window can be treated as a breach of your obligations, potentially leading to the suspension or reduction of your benefits. Once reported, the initial decision from the adjudicator typically takes 4 to 8 weeks. If your claim is denied and you must navigate the appeals process through the Appeals Resolution Officer (ARO) and eventually the WSIAT, it can take anywhere from 1 to 2 years to secure a final, binding decision. During this time, maintaining strong medical documentation is critical.

Frequently Asked Questions (FAQ)

Can I sue the physiotherapist for medical malpractice?

Generally, no. Under the WSIA, workers give up their right to sue employers and their agents (including WSIB-approved clinics) in civil court. Your exclusive remedy is to claim the injury through the WSIB system for enhanced benefits.

What if the secondary injury is psychological, like depression?

Yes, WSIB recognizes psychotraumatic disability. If your primary physical injury leads to severe, diagnosed depression or anxiety because of chronic pain or inability to work, this can be claimed as a secondary condition.

Does my employer get penalized for the secondary injury?

Yes, unfortunately for the employer, the costs associated with the secondary injury are generally applied to their WSIB experience rating, as the new injury is a direct extension of the original workplace accident.

What happens to my Loss of Earnings (LOE) if the physio injury delays my return to work?

If the WSIB accepts the secondary injury, your LOE benefits will continue uninterrupted for as long as you remain medically unable to perform suitable work, even if the original injury had technically healed.

Suffering a second injury while trying to heal from the first is incredibly demoralizing. The WSIB system often pushes back against secondary claims, making professional representation crucial. Consider consulting a skilled workers’ compensation lawyer or law firm from our Ontario directory to guide your appeal and secure the benefits you deserve.

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