Undue hardship
Undue hardship is the limit of an employer's duty to accommodate: the point where an accommodation would cause hardship the law treats as too great.
Also called: point of undue hardship, accommodation limit
What undue hardship means
Undue hardship is the legal limit on the duty to accommodate. Under human rights law, you must accommodate an employee's needs related to a protected ground, such as disability or religion, unless doing so would cause you undue hardship.
The word that matters is "undue". Some hardship is expected. Accommodation often costs money, takes time or makes scheduling harder, and that is part of the duty. Hardship becomes undue only when it reaches a level the law treats as too much.
Undue hardship is something the employer has to show, with real evidence. It is not a judgement you can make quickly or based on assumptions about what an employee can or cannot do.
How it works
Start from the accommodation, not the hardship. First look seriously at the options: changes to the job, the schedule, the equipment, the duties or the location. Only if no workable option exists does the question of undue hardship come up.
If you believe an option would cause undue hardship, gather evidence. That means real figures for costs, set against the size and resources of the business, and real assessments of any health or safety risk, not guesses. Write down every option you looked at and why each one did or did not work.
Human rights laws and commissions describe which factors count, and the lists differ by province. Cost and health and safety risks are usually part of the discussion. Inconvenience on its own, or the preferences of other staff or customers, is unlikely to be enough. In Ontario, for example, the Human Rights Code allows only three factors: cost, outside sources of funding, and health and safety requirements; business inconvenience, employee morale and customer or third-party preferences are not valid reasons. Check your province's human rights commission guidance for the exact factors where you are.
A small business can rely on its size. A cost that a large company could absorb may be undue for a 5-person shop. But the claim still needs to be backed by numbers and by a genuine search for alternatives, including partial or temporary solutions.
If you think you have reached undue hardship, get advice before acting. Ending someone's employment because accommodation seemed too hard can lead to a human rights complaint.
Is it the same in every province?
Every province and territory's human rights law, and the Canadian Human Rights Act for federally regulated employers, limits the duty to accommodate at undue hardship. The factors each one names differ somewhat, so check your provincial human rights commission's guidance.
Example: A night-shift request at a Sudbury bakery
Ray owns a 6-person commercial bakery in Sudbury that runs overnight. His baker Simone develops a medical condition and her doctor says she should not work nights for at least 6 months. Ray's first reaction is that it is impossible: the bakery only bakes at night.
Before deciding, Ray looks at options. He finds that dough prep and packaging could move to a day shift if one other baker swaps some hours, which a coworker agrees to. It costs some overtime, but nothing like undue hardship for his business. Ray writes down the options he considered, the plan and a review date.
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Questions about undue hardship
What counts as undue hardship for a small business?
It depends on real evidence, such as actual costs set against the business's size and resources, or real health and safety risks. Inconvenience alone is unlikely to be enough. Check your province's human rights commission guidance.
Who has to prove undue hardship?
The employer. You need evidence of the hardship and a record of the accommodation options you looked at.
Can cost be undue hardship?
Cost can be a factor, but it has to be large compared with what the business can bear, and backed by real figures.
Related terms
Official sources
General information for Canadian employers, not legal advice. Rules differ by province and territory and change over time, so check with your provincial employment standards office (or the federal Labour Program if you are federally regulated) before you rely on it. See employment standards by province.
Checked against official sources on 5 November 2026.