Constructive Dismissal: When Quitting Counts as Being Fired
A pay cut, a demotion, a toxic change to your role. Sometimes walking away is legally the same as being terminated. Here is when, and what you can claim.
Key takeaways
- Constructive dismissal is when your employer makes a fundamental change to your job without your agreement, so the law treats it as if they fired you.
- Common triggers: a significant pay cut, a demotion, a forced relocation, a drastic change in duties, or a toxic or harassing work environment.
- If it qualifies, you can treat yourself as dismissed and claim the same severance as if you were fired without cause.
- Timing matters. Waiting too long, or carrying on as normal, can be treated as agreeing to the change.
- Resigning when the change is not actually substantial can cost you everything. Get advice before you walk.
In this article
Most people think they only have a claim if their employer actually fires them. Not true. If your employer makes a serious, one-sided change to a core part of your job, the law can treat that as a dismissal even though no one said the words "you are fired." That is constructive dismissal, and it can entitle you to the same severance as a straight termination. But it is also one of the easiest areas to get wrong, so the timing and the advice you get matter enormously.
✅Quick answer. Constructive dismissal happens when your employer unilaterally makes a substantial change to a fundamental term of your employment (such as your pay, your position, your duties, or your location), or allows your workplace to become intolerable. When that happens you can treat the contract as ended and claim full common law severance, just as if you had been fired without cause. The risk is timing: act too slowly and you may be taken to have accepted the change.
What is constructive dismissal in Ontario?
Constructive dismissal is a fundamental, unilateral change to your employment that you did not agree to. Your employer is allowed to manage and make reasonable adjustments, but it cannot rewrite the core bargain. When it forces through a change serious enough to go to the heart of your contract, the law says you have effectively been dismissed, and you can claim severance as though you were let go without cause.
The two ways constructive dismissal happens
The Supreme Court of Canada in Potter v. New Brunswick Legal Aid Services Commission (2015) set out two paths to constructive dismissal:
- A single substantial breach. One unilateral change that goes to an essential term, such as a major pay cut, a demotion or change in duties, or a forced relocation. The test is objective: would a reasonable person in your position see it as a substantial change to a fundamental term?
- A course of conduct. A pattern of behaviour that, taken together, shows the employer no longer intends to be bound by the contract, such as a poisoned or harassing work environment, even if no single act would be enough on its own.
What kinds of changes count?
There is no closed list, but these are the changes that most often qualify. The key is that the change is significant and imposed without your consent.
| Change to your job | Often a constructive dismissal? |
|---|---|
| A significant cut to your pay, commission, or bonus structure | Yes, frequently |
| A demotion or removal of major responsibilities | Yes, frequently |
| A forced relocation far from your agreed work location | Often |
| A toxic, abusive, or harassing work environment left unaddressed | Often |
| An indefinite or unpaid layoff your contract does not allow | Often |
| A minor change to duties or a small, temporary adjustment | Usually not |
Why timing matters: do not wait, and do not just accept it
This is where people lose otherwise strong cases. If you carry on working under the new terms as if nothing happened, you can be found to have condoned (accepted) the change, which can end your right to claim. At the same time, you usually do not have to quit on the spot. In many situations you can keep working under protest while you get advice and decide. Making clear, in writing, that you object and reserve your rights is often the safest first step.
⚠️Do not resign before you get advice. If you quit over a change that a court later finds was not substantial, you may be treated as having simply resigned, with no severance at all. Whether a change crosses the line is a legal judgment. Have it checked before you walk.
What can you claim if you were constructively dismissed?
The same thing you could claim for any without-cause dismissal: common law reasonable notice, based on your age, length of service, type of role, and the job market, up to about 24 months of full pay and benefits. That includes salary, bonus, commissions, benefits, and pension over the notice period. You generally have a duty to look for comparable work to mitigate, and in some cases that can include staying on in the new role temporarily while you search.
Ontario constructive dismissal awards land in the same range as an outright firing:
- Filice v. Complex Services (2018 ONCA 625): a 50-year-old with about 9 years of service received 7 months.
- Rajkumar (2025 ONSC 2649): a 57-year-old with 15 years of service was awarded 18 months.
- Hagholm v. Coreio (2018 ONCA 633): a 60-year-old with 22 years of service received 20.5 months.
Because the remedy is the same as a regular dismissal, the same length-of-service pattern applies. Here is what Ontario courts have actually awarded across hundreds of decisions:
What is your constructive dismissal worth?
A constructive dismissal entitles you to the same reasonable notice as a firing. Estimate your range with our free, case-law-calibrated calculator.
What should you do if you think you have been constructively dismissed?
- 1.Do not resign in the moment, and do not sign anything accepting the new terms.
- 2.Put your objection in writing, stating that you do not agree to the change and reserve your rights.
- 3.Keep records of the change and of any conduct that made your job intolerable.
- 4.Get advice quickly, before you are seen to have accepted the change. The review is free.
- 5.Let your lawyer help you decide whether to claim, and how to handle working under protest in the meantime.
Constructive dismissal leads to the same entitlement as a firing, so it is worth understanding how that number is built in our guide to severance pay in Ontario. If your employer instead dismissed you outright without proper pay, see wrongful dismissal, or get a free review of your situation.
Frequently asked questions
Is a pay cut constructive dismissal in Ontario?
A significant, unilateral pay cut is one of the clearest examples of constructive dismissal. A small or temporary adjustment may not be. The larger the cut and the less you agreed to it, the stronger the claim.
If I quit because of a toxic workplace, can I still claim severance?
Possibly. A workplace that has become genuinely intolerable, through harassment or a poisoned environment the employer fails to fix, can amount to constructive dismissal. Document what is happening and get advice before resigning.
Do I have to quit to claim constructive dismissal?
Often you can keep working under protest while you decide, rather than quitting immediately. But you must not simply accept the change as normal, because that can be treated as agreeing to it. Get advice on timing.
How long do I have to act on a constructive dismissal?
There is no fixed deadline to resign, but waiting too long risks being found to have condoned the change. The underlying claim has a two-year limitation period, but the practical window to respond to the change is much shorter.
What can I claim for constructive dismissal?
The same as a without-cause dismissal: common law reasonable notice based on your age, service, role, and the job market, up to about 24 months of pay and benefits, including bonus and benefits over that period.
Carmen Reyes
Legal Writer, Mirza Law
Carmen Reyes is a legal writer at Mirza Law in Toronto. She writes about constructive dismissal, workplace changes, and how Ontario employees can protect themselves when their job changes under them.
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