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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Workers’ Compensation (WSIB) Ontario » WSIB Claims & Workplace Injuries Ontario » Dealing with WSIB Overpayments and Repayment Demands in Ontario

Dealing with WSIB Overpayments and Repayment Demands in Ontario

28 Jun 2026 5 min read No comments WSIB Claims & Workplace Injuries Ontario
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A WSIB overpayment happens when the board decides you received benefits you were not legally entitled to in Ontario. You have 6 months to appeal the decision, but if the debt is valid, you can usually negotiate a manageable monthly repayment plan so they do not take your entire cheque.

Opening a letter from the Workplace Safety and Insurance Board (WSIB) demanding thousands of dollars back is a terrifying experience for any injured worker. Unfortunately, overpayments are surprisingly common in the Ontario compensation system. 📝

An overpayment usually occurs when there is a delay in communication. For example, if you returned to modified work and started earning a wage, but the WSIB continued to send you full Loss of Earnings cheques, they will eventually notice the double-dipping and demand the money back.

The WSIB is aggressive in collecting these debts, but you have rights. This guide will explain how to verify if the overpayment is accurate, how to negotiate a fair repayment schedule, and when you should hire a local lawyer to appeal the decision entirely.

Step-by-Step Process in Ontario

Whether you live in Mississauga, London, Windsor, or Thunder Bay, the WSIB collection process is the same. Ignoring the demand letter will only make the situation worse, as the WSIB can take serious action to recover their funds. 📍

Handling an overpayment correctly requires fast action and careful review of your financial records and pay stubs.

Step 1: Read the Overpayment Decision Letter Carefully

Do not panic and immediately write a cheque. Read the letter to understand exactly why the WSIB believes they overpaid you. ❗

The letter should outline the specific dates in question. Common reasons include retroactive decisions (e.g., an adjudicator later decides your injury actually healed three months ago), receiving Canada Pension Plan (CPP) disability benefits at the same time, or an employer reporting your wages incorrectly.

Step 2: Check for WSIB Calculation Errors

The WSIB is a massive bureaucracy, and case managers frequently make math errors. Compare the dates and amounts in the letter to your own bank statements and pay stubs.

If they calculated your post-injury earnings incorrectly, or if they claim you were working when you were actually in the hospital, you have strong grounds to fight the overpayment.

Step 3: File an Intent to Object (If You Disagree)

If you believe the overpayment is a mistake, you must file an Intent to Object form. Under section 120 of the Workplace Safety and Insurance Act, 1997 (WSIA), you have up to 6 months (180 days) from the date of the decision to object to benefit recalculations or overpayment decisions. The much shorter 30-day limit only applies to return-to-work or work transition decisions. 💪

Step 4: Negotiate a Repayment Schedule

If you genuinely owe the money (e.g., you accidentally received two cheques and cashed both), you must arrange to pay it back. The WSIB will often automatically deduct the debt from your ongoing benefits.

However, they cannot leave you destitute. If the WSIB is taking 50% or 100% of your current cheque, you must contact them and submit a Financial Hardship Form. You can usually negotiate a repayment plan where they only deduct 10% to 20% of your ongoing monthly benefits until the debt is cleared.

How Much Does it Cost in Ontario?

The financial burden of an overpayment is directly tied to the amount the WSIB claims you owe. These debts can range from a few hundred dollars to tens of thousands. 💰

Here is a breakdown of the typical financial elements involved in an overpayment situation:

Financial ElementEstimated Cost (CAD)Who Pays?
Average WSIB Overpayment$500 to $15,000+The Injured Worker
Monthly Deduction Rate10% to 20% of ongoing LOEDeducted automatically by WSIB
Lawyer Fees (If Appealing)20% – 30% ContingencyWorker (only if the debt is wiped/refunded)
Certificate of Default Registration$0WSIB registers it directly (WSIA s. 139)

If you are no longer receiving WSIB benefits and you refuse to pay the debt, the WSIB can register a Certificate of Default with the Superior Court of Justice or Small Claims Court under section 139 of the WSIA. This is an administrative process that does not require a formal civil lawsuit or trial, but the certificate is entered in the same way as an order of the court and is fully enforceable, allowing them to garnish your regular employment wages or put a lien on your house.

How Long Does the Process Take?

You must act in a timely manner. Once you receive the decision letter, you typically have exactly 6 months (180 days) to file an Intent to Object if you want to fight the overpayment. ⏱

If you enter into a repayment agreement, the process simply takes as long as necessary to pay off the balance. For example, paying off a $5,000 debt at $100 a month will take over 4 years.

If you appeal the overpayment decision, the internal review by an Appeals Resolution Officer (ARO) can take 6 to 9 months, and a final appeal to the Workplace Safety and Insurance Appeals Tribunal (WSIAT) can take 1 to 2 years.

Frequently Asked Questions (FAQ)

Can the WSIB garnish my regular work wages?

Yes. If you are no longer on WSIB benefits and you ignore their repayment demands, the WSIB can register the debt with the courts. They can then legally garnish your wages from your current employer or seize funds from your bank account.

Will declaring bankruptcy clear my WSIB overpayment?

Usually, yes. An overpayment to the WSIB is generally considered an unsecured debt and can be included in a personal bankruptcy or consumer proposal in Canada. However, you should consult a Licensed Insolvency Trustee to confirm based on your specific case.

Why is the WSIB asking for money back after three years?

Under the WSIB’s “three-year rule” (OPM Document No. 18-01-04), the board generally cannot recover a benefit-related debt unless they notify you in writing of the overpayment within three years of the payment date. The only exceptions are cases involving fraud, deliberate misrepresentation, or a willful failure to disclose a material change in circumstances. If the debt arose from an innocent administrative error and three years have passed, you may have strong grounds to dispute the recovery.

Can the WSIB take my CPP Disability cheque?

The WSIB cannot directly seize your CPP Disability cheque from the federal government. However, WSIB rules state that your LOE benefits must be reduced if you receive CPP Disability for the same injury. If you get retroactive CPP, it almost always creates a massive WSIB overpayment.

Do I need a lawyer for a WSIB overpayment?

If the overpayment is small and you agree you owe it, you do not need a law firm. Just call and set up a payment plan. However, if the overpayment is for thousands of dollars and is based on a complex dispute about your medical recovery, hiring a lawyer is highly recommended.

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