Return to Work Programs in Ontario: A Complete Employer Guide

Table of Contents

1. What Is a Return to Work Program?
2. The Legal Framework in Ontario
3. WSIB Return to Work Obligations
4. What Counts as Suitable Work
5. The Functional Abilities Form
6. The Return to Work Process: Step by Step
7. Non-WSIB Return to Work: Disability and Illness
8. Accommodation Under the Human Rights Code
9. Can You Terminate During an RTW Process?
10. Common Employer Mistakes
11. When to Get HR Support
12. Frequently Asked Questions

What Is a Return to Work Program?

A return to work (RTW) program is a structured process that helps employees who have been injured or become ill return to productive employment—safely, as early as medically appropriate, and in compliance with Ontario law.

Most employers think about RTW only when a WSIB claim is open. That’s a mistake. Ontario employers have RTW obligations under three separate legal frameworks, and two of them have nothing to do with WSIB:

• The Workplace Safety and Insurance Act (WSIA) — applies to workplace injuries and occupational illness covered by WSIB
• The Ontario Human Rights Code (OHRC) — applies to any employee with a disability, whether the condition arose at work or not
• The Employment Standards Act (ESA) — provides job protection during leaves related to illness, injury, and medical emergencies

An employer who handles the WSIB side perfectly but ignores the Human Rights Code side can still face a human rights complaint. Understanding all three layers is essential.

The Legal Framework in Ontario

WSIB Return to Work Obligations

Under the WSIA, Ontario employers have two distinct RTW obligations.

The Duty to Cooperate (All WSIB-Registered Employers)

Every employer registered with WSIB must cooperate in the return to work process. This means:

• Contacting the injured employee promptly after learning of the injury
• Maintaining communication throughout recovery
• Sharing functional abilities information with WSIB when requested
• Actively participating in identifying suitable modified work
• Reporting disagreements to WSIB rather than leaving them unresolved

Failure to cooperate can result in WSIB penalties and loss of cost relief—a meaningful financial consequence for operations with significant claims history.

The Re-Employment Obligation (Employers with 20+ Employees)

Employers with 20 or more employees at the time of the injury must offer re-employment if the injured worker has been continuously employed for at least one year before the injury. This obligation runs for up to two years from the date of injury, or until the worker can perform their pre-injury job—whichever is longer.

Construction industry: Different rules apply under WSIB Policy 19-05-02. Construction employers should review the construction-specific thresholds, durations, and requirements at wsib.ca.

What Counts as Suitable Work

Not all modified work qualifies as “suitable work” under WSIB policy. Four criteria must all be met:

If suitable work exists that meets all four criteria, you are required to offer it—even if it means modifying an existing role or temporarily assigning the employee to a different department.

The Functional Abilities Form (FAF)

The Functional Abilities Form is the central document in Ontario’s RTW process. It is completed by the employee’s treating health professional and identifies what the employee can and cannot do—without disclosing a diagnosis.

The FAF documents:

• Lifting capacity, sitting and standing tolerance, walking ability, cognitive task limits
• Any restrictions during the recovery period
• An estimated return-to-full-work date, where possible

Key facts about the FAF:

• Either the employer or the employee can request it from the treating health professional
• WSIB pays the completion cost—neither party is charged
• The FAF is confidential; access is limited to those directly involved in RTW planning
• There is no limit on how many FAFs can be completed; updated forms are expected as the employee recovers
• For non-WSIB situations, you can request a functional limitations note from the employee’s physician—but you may only ask about functional limitations, not diagnoses

The Return to Work Process: Step by Step

1. Establish early contact (Day 1–2)
   Reach out as soon as you learn of the injury or illness. Keep it supportive—no pressure on return dates. The first call is about connection and support, not logistics. Document it.
2. Obtain functional abilities information (Days 3–14)
   Request an FAF (for WSIB claims) or a functional limitations note (for non-WSIB illness). Do not ask for a diagnosis.
3. Identify suitable modified work (Days 7–21)
   Review your operations for tasks within the employee’s documented functional abilities. Check across departments and locations.
4. Develop a written RTW plan
   Document the agreed arrangement: start date, modified duties, daily hours, duration, check-in schedule, and criteria for returning to full duties. Both parties sign the plan.
5. Implement with weekly check-ins
   Begin the arrangement. Schedule brief weekly check-ins during the first month to monitor recovery and adjust duties as needed.
6. Gradually increase duties
   As recovery progresses—confirmed by updated FAFs—progressively increase task complexity and hours toward the pre-injury role. This gradual approach reduces re-injury risk.
7. Return to full duties or reassess
   When the employee is at full functional capacity, return them to their pre-injury job. If permanent restrictions remain, assess long-term accommodation options under the Human Rights Code.
8. Document throughout
   Every call, email, FAF, plan, and check-in note belongs in the file. In a WSIB dispute or HRTO proceeding, documentation is your primary evidence of good-faith cooperation.

Non-WSIB Return to Work: Disability and Illness

Many employee absences have nothing to do with WSIB. An employee recovering from cancer, managing a mental health condition, or returning after a cardiac event has the same RTW protections under the Human Rights Code—even though WSIB is not involved.

In non-WSIB situations:

• ESA leave protections apply. Employees may be on a protected leave—illness leave, critical illness leave, or the new Long-Term Illness Leave (expanded to 27 weeks in June 2025). You cannot terminate, discipline, or penalize them for taking it.
• The Human Rights Code duty to accommodate applies in full. You must identify modified work, provide accommodation, and not terminate because of the disability.
• LTD plans don’t replace your accommodation obligation. The fact that an employee receives Long-Term Disability benefits from a group insurance plan does not end your obligation under the Human Rights Code. Those are separate legal frameworks.
• The duty to inquire. If you observe visible signs that an employee may be struggling—performance decline, increased absences, unusual behaviour—you may have a proactive duty to ask whether they need support, even without a formal accommodation request. Ignoring visible distress is not a safe legal position.

Accommodation Under the Human Rights Code

The duty to accommodate requires employers to modify the terms, conditions, or requirements of the job to enable an employee with a disability to perform their work—unless doing so would cause undue hardship.

The Undue Hardship Standard

Undue hardship is the only lawful reason to stop accommodating. Ontario courts recognize only three valid factors:

1. The cost of the accommodation
2. Health and safety risks that cannot be mitigated
3. The availability of outside funding to offset accommodation costs

The following are not undue hardship factors: co-worker morale, operational inconvenience, customer preference, or the difficulty of managing the situation. Employers must provide objective, documented evidence—assertions alone do not meet the threshold.

Can You Terminate During an RTW Process?

Terminating an employee while an RTW process is active—or shortly after an injury or illness—is one of the highest-risk actions an Ontario employer can take.

Before terminating any employee who is absent due to injury or illness, get HR or legal advice. A Human Rights Tribunal complaint can cost more to defend than a proper accommodation process costs to run.

Common Employer Mistakes in Return to Work

When to Get HR Support

Routine RTW cases—short absence, clear recovery timeline, cooperative employee—can often be managed with a basic policy and consistent documentation. But the following situations carry enough risk to justify outside HR support:

• Permanent functional restrictions: When restrictions are long-term, a formal accommodation assessment is needed—not an ad hoc arrangement
• Mental health cases: The FAF process, communication norms, and legal risks are different; specialized experience matters
• Long-term absences (6+ months): These cases accumulate complexity quickly; earlier HR involvement leads to better outcomes
• WSIB disputes and objections: HR support is valuable before entering the WSIB appeal process
• No written RTW policy: Build the program proactively rather than creating it under pressure during an active claim
• History of complaints or difficult relationship: Any RTW case with prior tensions carries elevated retaliation and human rights risk

At HRX Connect, we help Ontario employers build RTW programs that are legally sound and genuinely employee-centred—from policy development to managing complex active cases. Get in touch to learn more.

Frequently Asked Questions

What is a return to work program in Ontario?

A return to work (RTW) program is a formal process that helps injured or ill employees return to productive work safely and as soon as medically appropriate. In Ontario, RTW obligations arise under the WSIA (for WSIB claims) and the Human Rights Code (for any disability). Every Ontario employer has at least some RTW obligations regardless of size.

Which Ontario employers must have a return to work program?

All WSIB-registered employers have a duty to cooperate in RTW. Employers with 20+ employees have the additional re-employment obligation under the WSIA. The Human Rights Code duty to accommodate applies to all employers—regardless of size—when an employee has a disability.

Does the WSIB re-employment obligation apply to construction employers?

Yes, but different rules apply. Construction employers have specific thresholds, durations, and requirements under WSIB Policy 19-05-02. The standard 20-employee and 2-year rules differ for construction. Review the construction-specific policy at wsib.ca.

Can an employer terminate an employee during a return to work process?

Terminating during an active RTW process carries serious legal risk under both the WSIA (retaliatory termination for WSIB claims) and the Human Rights Code (discrimination based on disability). Termination for genuine, documented business reasons unrelated to the injury may be permissible—but this is a high bar. Always get HR or legal advice before acting.

What is suitable work under WSIB?

Suitable work must be safe, productive (genuine business value—not make-work), consistent with documented functional abilities, and must restore pre-injury earnings to the greatest extent possible. All four criteria must be met.

What is the Functional Abilities Form (FAF)?

The FAF is a non-clinical document completed by the employee’s treating health professional identifying functional capabilities and limitations without disclosing a diagnosis. Either party can request it; WSIB pays the completion cost. It is the foundation for identifying suitable modified work.

What is the undue hardship standard in Ontario?

Undue hardship is the only defence to the duty to accommodate. Only three factors count: accommodation cost, health and safety risks, and availability of outside funding. Inconvenience, co-worker morale, and operational disruption are not valid undue hardship factors. Employers must provide objective evidence—not just assertions.