A non-compete clause in Canada is a contractual restriction that tries to prevent an employee from working for a competitor or starting a competing business after their employment ends.
Non-compete clauses are difficult to enforce because they directly restrict an employee’s ability to earn a living. Outside jurisdictions with a statutory ban, courts scrutinize them closely and will not enforce restrictions that are unclear, unreasonable or broader than necessary to protect a legitimate business interest.
Ontario goes further. Most employers in Ontario are prohibited from entering into non-compete agreements with employees, subject to limited exceptions. Wherever you work, don’t assume a non-compete controls your career simply because you signed it.
On This Page:
- 1. What a Non-Compete Clause Does
- 2. Are Non-Competes Enforceable?
- 3. What Makes a Clause Enforceable?
- 4. Ontario’s Non-Compete Ban
- 5. Non-Compete vs. Non-Solicitation
- 6. What to Do If Your Employer Tries to Enforce It
- 7. FAQs
What Does a Non-Compete Clause Do?
A non-compete clause attempts to restrict where or how an employee can compete with a former employer after leaving the job.
Depending on the wording, it can try to prevent you from:
- working for a competing company;
- starting a competing business;
- providing competing services;
- working within a particular geographic area; or
- competing for a specified period after your employment ends.
These provisions are usually found in an employment contract, executive agreement or separate restrictive-covenant agreement.
Are Non-Compete Clauses Enforceable in Canada?
Sometimes, but employers face a high bar when trying to enforce a non-compete clause against an employee.
Canadian courts treat non-competes as restraints on trade. In an employment relationship, the restriction must be justified and reasonable. An employer can’t simply impose an extremely broad ban on working in your industry and expect a court to enforce it.
A clause is particularly vulnerable when it is vague, covers too large an area, lasts too long or prohibits more activity than the employer genuinely needs to protect.
Ontario employees have stronger statutory protection because most new non-compete agreements are prohibited altogether.
What Makes a Non-Compete Clause Enforceable?
Where non-competes are legally permitted, the employer must show that the restriction is clear, reasonable and justified.
Courts commonly examine:
- The activity restricted: The clause should clearly identify what work or competition is prohibited.
- The length of the restriction: The period must be reasonable in the circumstances.
- The geographic area: A geographic restriction must be clear and no broader than reasonably necessary.
- The employer’s business interest: The employer must have a legitimate interest that requires protection.
- Whether a narrower restriction would work: A non-solicitation or confidentiality clause can often protect the employer without preventing the employee from working altogether.
What if the clause is unclear?
An ambiguous restrictive covenant is very difficult to enforce. Courts generally will not rewrite a poorly drafted non-compete simply to make it reasonable.
Does a senior position make a non-compete enforceable?
Not automatically. Seniority and access to sensitive business information can matter, but the restriction still needs to satisfy the applicable legal test.
Are Non-Compete Clauses Banned in Ontario?
Yes. Ontario prohibits most employers from entering into non-compete agreements with employees on or after October 25, 2021.
The Employment Standards Act makes a prohibited non-compete agreement void. The ban applies whether the restriction is signed before employment begins, during employment or after the employment relationship ends.
There are limited exceptions, including:
- Certain chief executives: The statutory prohibition does not apply to employees holding specified chief executive positions.
- Sale of a business: A qualifying non-compete can be permitted when the seller becomes an employee of the purchaser as part of the sale transaction.
Non-compete agreements entered into before October 25, 2021 are not automatically void under Ontario’s statutory ban, but they can still be unenforceable under the common law.
For the complete provincial rules, read our guide to non-compete clauses in Ontario.
Non-Compete vs. Non-Solicitation Clauses
A non-compete tries to stop you from competing, while a non-solicitation clause usually restricts who you can approach after leaving.
For example:
- Non-compete: “You can’t work for a competing business.”
- Non-solicitation: “You can’t actively pursue certain clients or employees of your former employer.”
- Confidentiality: “You can’t disclose or improperly use confidential business information.”
A non-solicitation clause is less restrictive because it can allow you to continue working in your industry. That is one reason courts are more willing to enforce reasonable non-solicitation restrictions than broad non-competes.
The label on the clause is not decisive. What matters is what the provision actually prevents you from doing.
What Should You Do If an Employer Tries to Enforce a Non-Compete?
Have the clause reviewed immediately rather than assuming you must comply—or assuming you can safely ignore it.
A former employer can send a cease-and-desist letter, threaten legal proceedings or seek a court injunction aimed at stopping competitive activity. It can also pursue damages if it alleges that an enforceable agreement was breached.
Before responding:
- Review the exact wording. Confirm what activity, location and period are actually restricted.
- Identify which province’s law applies. Non-compete rules are not identical across Canada.
- Keep your documents. Save the employment contract, job offer, termination documents and legal correspondence.
- Protect confidential information. Don’t take or use proprietary documents, client lists or trade secrets when leaving.
- Get advice before responding. An employment lawyer can determine whether the employer has an enforceable restriction and how you should proceed.
Non-compete rules by province
For province-specific rules, see:
- Non-Compete Clauses in Ontario — Ontario’s statutory ban and exceptions.
- Non-Compete Clauses in Alberta — Alberta enforceability and reasonableness rules.
- Non-Compete Clauses in British Columbia — BC rules for restrictive covenants.
If you have been asked to sign a contract containing post-employment restrictions, an employment contract review can identify the risk before you agree to the terms.
Non-Compete Clause FAQs
Can a non-compete stop me from taking a new job?
Not automatically. The employer must have a legally enforceable restriction before it can successfully prevent you from competing.
How long can a non-compete last in Canada?
There is no single Canada-wide maximum. Where non-competes are permitted, the duration must be reasonable in the circumstances.
Can my former employer sue me for breaching a non-compete?
Yes, but it still has to establish that the restriction is enforceable and that you breached it.
Is a confidentiality agreement the same as a non-compete?
No. Confidentiality clauses protect information; non-competes restrict competitive work after employment ends.
A non-compete clause can affect your ability to accept a new job, build a business or continue working in your industry—but many restrictions are far less enforceable than employees assume.
The non-compete agreement lawyers at Samfiru Tumarkin LLP help non-unionized employees review restrictive covenants before signing and respond when a current or former employer threatens enforcement.
For contract-specific advice in Ontario, speak with an employment contract lawyer in Toronto. In Alberta, our employment contract lawyers in Calgary can review the restriction and explain your options.