To appeal a denied WSIB claim in Ontario, you must request an Appeals Resolution Officer (ARO) review within six months of the decision. There are no official WSIB filing fees, but presenting a well-organized case-whether through a written submission or an oral hearing-is crucial to overturning the denial.
Having your workplace injury claim denied can feel incredibly overwhelming, especially when you are trying to focus on healing. However, a denial is not necessarily the end of the road. In Ontario, the Workplace Safety and Insurance Board (WSIB) provides an internal appeals process, culminating in a review by an Appeals Resolution Officer (ARO). Understanding how to navigate this system can greatly improve your chances of receiving the benefits you deserve.
This guide will walk you through the entire ARO hearing process in Ontario. 📝 Whether you are located in Toronto, Ottawa, London, or a smaller community, the provincial WSIB procedures remain consistent. We will explain how to prepare your evidence, what to expect during the hearing, and how a local lawyer can assist you in building a strong case.
Step-by-Step Process for a WSIB ARO Appeal in Ontario
The journey to an ARO hearing involves several mandatory steps. Generally, you cannot simply request a hearing out of the blue; you must follow the WSIB’s structured objection process to ensure your file is properly escalated.
Step 1: Submitting the Intent to Object (ITO) Form
Your first move is to formally notify the WSIB that you disagree with their decision. ⏱ You must complete and submit the Intent to Object form within six months for most decisions, or within 30 days if the issue involves return-to-work or labour market re-entry. Once submitted, the original decision-maker will briefly review your file to see if they can change their mind (this is called a reconsideration).
Step 2: Receiving the Claim File and Appeal Readiness Form
If the original decision-maker does not change their ruling, the WSIB will send you a complete copy of your claim file, along with an Appeal Readiness Form. You must review the file carefully. It contains all the medical reports, employer statements, and internal notes the WSIB used to make their decision. You will use this file to identify missing evidence and build your argument.
Step 3: Choosing Between Written and Oral Hearings
When you complete the Appeal Readiness Form, you must indicate how you want the ARO to review your case. 🗣 You can choose a written submission (where the ARO decides based solely on the documents) or an oral hearing (which can be held by teleconference, video conference, or in-person). Most complex cases, especially those relying on your personal credibility or witness testimony, benefit from an oral hearing.
Step 4: Gathering and Submitting New Evidence
Before your hearing date, you need to collect any new medical or factual evidence that supports your claim. This might include updated specialist reports, a detailed letter from your family doctor outlining your physical limitations, or statements from co-workers who witnessed your injury. All new evidence must be submitted well in advance so the ARO and your employer have time to review it.
Step 5: Attending the ARO Hearing
If you requested an oral hearing, you will present your case to the ARO on the scheduled date. 💼 The ARO is a senior WSIB employee who was not involved in your original decision. During the hearing, you (or your legal representative) will explain why the original decision was incorrect, present your evidence, and answer any questions the ARO may have. Your employer may also participate and ask questions.
How Much Does a WSIB Appeal Cost in Ontario?
Navigating the financial aspects of an appeal is a common concern for injured workers. Fortunately, the administrative side of appealing to the WSIB is designed to be accessible.
- WSIB Filing Fees: There are $0 CAD in filing fees to submit an Intent to Object or to request an ARO hearing.
- Medical Evidence Costs: Doctors typically charge a fee for writing detailed medical reports. As of May 2026, this can range from $50 CAD to over $200 CAD per report. In some cases, if the ARO requests specific medical information, the WSIB may cover these costs.
- Lawyer Fees: Most Ontario law firms that handle WSIB claims work on a contingency fee basis. This means you do not pay hourly rates; instead, the lawyer takes a percentage (often between 15% to 30%) of the retroactive benefits they win for you.
| Hearing Type | Best For | Typical Timeline |
|---|---|---|
| Written Submission | Straightforward medical issues where credibility is not in dispute. | Usually faster, decisions often within 60 to 90 days of submission. |
| Oral Hearing (Phone/Video) | Complex injuries, return-to-work disputes, or cases requiring testimony. | Requires scheduling; decisions typically 30 days after the hearing concludes. |
How Long Does the ARO Process Take?
The timeline for an ARO appeal can vary significantly depending on the complexity of your claim and the current volume of cases at the WSIB. Generally, after submitting your Appeal Readiness Form, it may take anywhere from 3 to 6 months to have your hearing scheduled or your written submission reviewed. Once the hearing is complete, the ARO aims to issue a formal written decision within 30 days, outlining their reasons in detail.
Frequently Asked Questions (FAQ)
Do I need a lawyer for an ARO hearing?
While you are not legally required to have a lawyer, the ARO level is highly formal and involves complex statutory interpretation. Having an experienced Ontario lawyer or paralegal can significantly improve your chances of success.
What happens if I miss the six-month deadline?
If you miss the deadline to file your Intent to Object, you must request a time limit extension from the WSIB. Extensions are only granted in exceptional circumstances, so it is crucial to act promptly.
Is the ARO decision final?
The ARO decision is the final internal decision at the WSIB. If you still disagree, your next step is to appeal to the Workplace Safety and Insurance Appeals Tribunal (WSIAT), which is an independent provincial body.
Will my employer attend the ARO hearing?
Yes, employers have the right to participate in the appeals process. They can review your claim file, submit their own evidence, and attend the oral hearing to question witnesses.
Should I choose an in-person or video hearing?
Since 2020, the WSIB has heavily favoured video and teleconference hearings. In-person hearings are rare and usually reserved for cases where an accommodation is legally required under the Ontario Human Rights Code.
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