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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Work & Employment Rights Ontario » What is a Functional Abilities Form (FAF) in Ontario Workplaces?

What is a Functional Abilities Form (FAF) in Ontario Workplaces?

7 Jun 2026 4 min read No comments Work & Employment Rights Ontario
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In Ontario, a Functional Abilities Form (FAF) is a critical medical document used to safely return an employee to work after an injury. It strictly outlines physical and cognitive limitations (such as “cannot lift over 15 lbs” or “no repetitive typing”), allowing the employer to provide legally mandated modified duties.

Returning to work after a serious illness, surgery, or a workplace accident is a delicate process . Workers in industrial hubs like Sudbury, Kitchener, and Thunder Bay often fear that their employer will force them back onto the warehouse floor or construction site before their body is fully healed. This fear of re-injury is exactly why the Functional Abilities Form (FAF) exists. Whether initiated by the Workplace Safety and Insurance Board (WSIB) or your company’s Human Resources team, the FAF acts as a strict legal roadmap. It bridges the gap between your doctor’s medical expertise and your boss’s operational needs, ensuring your return to the workplace is safe, legal, and physically manageable.

Step-by-Step Process for Using a Functional Abilities Form

Using an FAF correctly is crucial for protecting your health and securing your employment rights under the Human Rights Code. Here is how the process works in Ontario.

Step 1: Obtaining the Form

If you suffer a workplace injury, the FAF is usually provided by the WSIB 🗂. If your injury or illness happened outside of work (like a car accident or a heart attack), your HR department will typically email you their own corporate version of an FAF. Do not use a generic doctor’s note; the specific checkboxes on the FAF are legally necessary to design your return.

Step 2: The Doctor’s Assessment

You must take the blank FAF to your treating physician or physiotherapist . The doctor will assess you and check off highly specific limitations. They will document exactly how many hours you can sit, stand, walk, or bend. Crucially, the doctor will not write down your specific diagnosis (e.g., they will not write “broken femur”), they will only write the physical restrictions that result from it.

Step 3: The Return to Work (RTW) Meeting

Once you submit the completed FAF to HR, you will have a Return to Work meeting. Based on the doctor’s strict limits, the employer must try to find “modified duties” for you. If you usually lift heavy boxes but the FAF restricts lifting to 10 lbs, the employer might assign you to light desk duty, inventory counting, or answering phones.

Step 4: Trial Phase and Re-evaluation

Modified work is rarely permanent. You will typically work under these new restrictions for a set trial period 📅. As you heal, your employer may ask you to return to the doctor to get an updated FAF, gradually increasing your duties until you are back to your normal, pre-injury job requirements.

How Much Does an FAF Cost in Ontario?

Having a doctor fill out detailed medical paperwork takes time, and it is not covered by standard provincial healthcare. Here is who picks up the tab.

ScenarioTypical Form Fee (CAD)Who Pays the Bill?
WSIB Workplace Injury$45 – $60WSIB pays the doctor directly. You pay nothing.
Employer-Requested (Non-Work Injury)$50 – $100The employer legally must reimburse you if they demand the form.
Employee-Initiated Accommodation$50 – $100The employee usually pays out of pocket.

How Long Do Modified Duties Last?

The timeline for modified work depends entirely on your doctor’s assessment ⏱. For a minor sprain, an FAF might dictate light duties for just 2 to 4 weeks. For a major surgery or a severe concussion, modified duties might involve working only four hours a day for 3 to 6 months. The employer is legally obligated to accommodate you up to the point of “undue hardship,” which is a very high legal threshold to meet in Ontario.

Frequently Asked Questions (FAQ)

Can I refuse the modified duties my employer offers?

If the modified duties perfectly align with the restrictions listed on your FAF, you generally cannot refuse them without risking your job or WSIB benefits. However, if the employer asks you to do a task that violates the doctor’s written limits, you have the absolute legal right to refuse unsafe work.

Does the FAF reveal my medical condition?

No. An Ontario Functional Abilities Form is specifically designed to protect your privacy. It only focuses on what you can and cannot do physically or mentally. It does not require your doctor to disclose your underlying medical diagnosis or medications.

What happens if there is no light duty work available?

If you work for a very small company (like a small roofing crew) and there is genuinely no light administrative work available, the employer can place you on a temporary, unpaid medical leave until you are healed enough to resume your normal duties. If covered by WSIB, you would receive wage loss benefits during this time.

Can I use a chiropractor to fill out the FAF?

Yes. Under WSIB rules and many corporate policies, a registered chiropractor, physiotherapist, or registered nurse practitioner can fill out a Functional Abilities Form, provided they are actively treating you for the specific injury in question.

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