Accommodation isn’t optional, and it isn’t unlimited either. Here’s how far Ontario employers actually have to go, and what employees are entitled to ask for.

Under the Ontario Human Rights Code, employers must accommodate employees with disabilities to the point of “undue hardship”, a high legal threshold limited to significant financial cost, genuine health and safety risk, or outside funding availability. The duty has two parts: a procedural duty to genuinely inquire and assess, and a substantive duty to implement a workable accommodation. Reasonable accommodation is the standard, not perfect or preferred accommodation.

What Triggers the Duty to Accommodate?

The duty is triggered once an employer knows, or reasonably ought to know, that an employee may need accommodation related to a disability. That can come from a direct request, a medical note, or sometimes just the surrounding circumstances.

For example, an employee injured at work who never explicitly asks for modified duties. Employers cannot simply wait for a formal, perfectly worded request before engaging, and cannot passively wait to inquire once they’re aware an employee may be struggling.

The Two Parts of the Duty

Procedural duty: the employer must genuinely inquire, gather relevant information about the employee’s limitations (not necessarily a diagnosis), and canvass real accommodation options — not just the employee’s current role, but other available positions or arrangements.

Substantive duty: the employer must actually implement a reasonable accommodation, up to the point of undue hardship. Emotional discomfort during the process, or an employee simply preferring a different arrangement, doesn’t on its own establish a failure to accommodate.

Where the Duty Ends: Undue Hardship

Under Ontario law, only three factors count toward undue hardship: significant financial cost, genuine health and safety risk, and the availability of outside funding. Inconvenience, employee morale, and general policy preference do not meet the standard. The employer’s obligation ends only when the employee can no longer fulfill the basic obligations of the employment relationship for the foreseeable future. This is closely connected to how [ is assessed in long-absence cases.

Employees’ Responsibilities

Accommodation is a shared process. Employees are expected to communicate their needs, cooperate with reasonable efforts, and participate in return-to-work planning. An employee who refuses to engage, rejects a reasonable accommodation because it isn’t their preferred option, or fails to provide requested (though not necessarily diagnostic) medical information can weaken their own claim — though a failure to engage doesn’t erase the employer’s initial duty to inquire.

What This Means for Employers

  • Don’t wait for a perfectly framed request. If you know or should know an employee may need accommodation, the duty to inquire has already started.
  • Document the process: what was asked, what information was gathered, what options were considered, the same discipline that matters in a proper workplace investigation.
  • Look beyond the employee’s exact current role for accommodation options.
  • Keep in mind that Ontario’s long-term illness leave under the ESA is a separate statutory entitlement. Your human rights accommodation duty can extend beyond it and doesn’t end automatically when it’s exhausted.

What This Means for Employees

  • You don’t need to provide a diagnosis, but you do need to provide enough information for your employer to understand your limitations and needs.
  • You’re entitled to a reasonable accommodation, not necessarily your first choice.
  • If your employer denies a request without genuinely engaging, gathering information, or exploring alternatives, that alone can amount to a Human Rights Code violation.
  • Termination that follows closely after a medical leave, without any inquiry into accommodation needs, can create an inference that disability was a factor in the decision — see our related post on wrongful vs. constructive dismissal for how this can play out.

FAQ

Does my employer have to give me my preferred accommodation?

No. The legal standard is reasonable accommodation, not perfect accommodation or your preferred option.

Can my employer ask for my diagnosis?

Generally no. Employers can ask for information about functional limitations, restrictions, and expected duration — not necessarily a specific diagnosis.

What if accommodating me would be expensive for a small employer?

Cost is a relevant factor in undue hardship, but it must be significant, not merely inconvenient, and outside funding options must be considered first.

Can I be terminated while on medical leave if my employer never explored accommodation?

That’s a serious red flag. Employers are expected to inquire and assess accommodation options before treating an inability to return on a fixed timeline as grounds for termination. Please be sure to speak with an Employment Lawyer to review your rights and before you sign a severance package which you may be offered, as you may have significant more rights than what was presented

If You’re Facing This Now

If you believe your employer failed to accommodate a disability, or you’re an employer navigating a complex accommodation request, getting it wrong is costly on both sides. Please contact us to speak with an Employment Lawyer, as soon as possible.

Related reading: When Can an Employer Rely on Frustration of Contract? · Ontario Workplace Investigations: What Employers and Employees Should Know · Wrongful vs. Constructive Dismissal