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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Workers’ Compensation (WSIB) Ontario » WSIB Claims & Workplace Injuries Ontario » WSIB Claims for Tick Bites and Lyme Disease for Outdoor Workers in Ontario

WSIB Claims for Tick Bites and Lyme Disease for Outdoor Workers in Ontario

30 Jun 2026 4 min read No comments WSIB Claims & Workplace Injuries Ontario
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Outdoor workers in Ontario who contract Lyme disease can claim WSIB benefits if they prove the tick bite occurred during employment. Seek immediate medical attention, keep the tick if possible, and file a Form 6 to secure coverage for antibiotics and lost wages.

As the climate warms, blacklegged ticks carrying Lyme disease are spreading rapidly across Ontario. For professionals who spend their days in forests, tall grasses, or rural areas-such as landscapers, forestry workers, hydro linemen, and conservation staff-tick bites are a serious occupational hazard that can lead to debilitating long-term health issues.

Unlike a broken bone, an infectious disease claim with the Workplace Safety and Insurance Board (WSIB) can be difficult to prove. You must demonstrate that the infection was more likely than not acquired while performing your job duties, rather than during a weekend hike. Understanding the strict evidentiary requirements is absolutely critical for outdoor workers. 🦠

Step-by-Step Process in Ontario

Whether you are clearing brush in Ottawa, maintaining provincial parks near Kingston, or surveying land near Thunder Bay, you must act quickly if you suspect a tick bite. Here is how to establish an occupational disease claim for Lyme disease.

Step 1: Save the Tick and Seek Medical Care

If you find a tick attached to your skin, remove it carefully with tweezers. Do not crush it. Place the tick in a small container or ziplock bag. Go to a doctor or walk-in clinic immediately. While Public Health Ontario Laboratory no longer tests ticks for the Lyme disease bacteria (Borrelia burgdorferi) for individual clinical diagnosis, they will perform species identification. Confirming the species as a blacklegged tick (Ixodes scapularis) is helpful, but your WSIB claim will ultimately rely on clinical symptoms, the presence of a bullseye rash, and your own serological blood tests. 🏥

Step 2: Report the Incident to Your Employer

You must notify your supervisor as soon as you find the tick or develop symptoms (like the classic “bullseye” rash, high fever, or joint pain). Your employer is legally obligated to fill out a Form 7 (Employer’s Report of Injury/Disease) and send it to the WSIB within three business days of learning about the potential work-related illness.

Step 3: File Your Worker’s Report (Form 6)

Do not wait for a final, confirmed Lyme disease blood test to start the paperwork. File your Form 6 with WSIB immediately. You must describe exactly where you were working on the day of the bite. If you did not see the bite happen but developed symptoms later, describe your daily outdoor work environment in extreme detail. 📝

Step 4: Prove the Occupational Link

WSIB adjudicators will look at whether you were working in a known tick-endemic area (like Eastern Ontario or the shores of Lake Erie). You will need to show that the nature of your employment put you at a significantly higher risk of a tick bite compared to the general public. Your doctor’s medical reports (Form 8) and blood tests are crucial here.

Step 5: Follow the Treatment Plan

Lyme disease is typically treated with a course of strong antibiotics. WSIB requires you to fully participate in your medical recovery. If your symptoms cause severe fatigue or joint pain that keeps you from working safely, your doctor may recommend time off work, and you could be entitled to full Loss of Earnings (LOE) benefits. 💊

How Much Does it Cost in Ontario?

Pursuing a WSIB claim for an occupational illness is generally free. If approved, WSIB covers your medical expenses and prescriptions. However, if WSIB denies the claim because they believe you got the bite outside of work, you may need legal help. 💵

Expense TypeEstimated Cost (CAD)
WSIB Claim Filing Fee$0
Prescription AntibioticsCovered by WSIB (if approved)
Paralegal Appeal RepresentationUsually contingency (Percentage of back-pay)

How Long Does the Process Take?

If you catch the tick bite early, have the tick tested, and develop the classic rash, WSIB can approve an early-stage localized Lyme disease claim in as little as 3 to 6 weeks. However, if you are claiming chronic or late-stage Lyme disease without a clear incident report, adjudication can take 3 to 6 months due to complex medical reviews.

Frequently Asked Questions (FAQ)

What if I never saw the tick bite me?

You can still win a claim. Ticks are tiny, and many people never feel the bite. If you work entirely outdoors in a tick-endemic region and later test positive for Lyme disease, WSIB generally accepts that the exposure most likely happened at work, provided you lack significant outdoor hobbies.

Does WSIB cover chronic Lyme disease?

Yes, if the initial infection was accepted as a workplace injury, WSIB should continue to cover medical treatments and Loss of Earnings (LOE) if you unfortunately develop Post-Treatment Lyme Disease Syndrome or ongoing chronic symptoms.

What if I went camping on the weekend before the bite?

This highly complicates your claim. If you were exposed to ticks both at work and during personal leisure time, WSIB will investigate heavily. You will need strong medical and circumstantial evidence to tip the balance of probabilities in favour of an occupational exposure.

Can I claim benefits if I just have a rash but no blood test yet?

Yes. In Ontario, doctors often diagnose and treat early Lyme disease based on the presence of the erythema migrans (bullseye) rash alone, as blood tests can be negative in the first few weeks. WSIB often accepts the clinical diagnosis of a treating physician.

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