TREADSTONE LAW · ONTARIO · DIGITAL LEGAL SERVICES · EST. MMXXI ·TSL
Licensed by the Law Society of OntarioFlat fees published upfrontWe reply to messages within 1 business daySign in
Home/Articles/Buying & Selling a Business
№ xx Buying & Selling a Business

Seller Non-Compete Clauses in Ontario Business Purchases

Learn when a seller's non-compete in an Ontario business purchase is allowed under the Employment Standards Act, and what to check before you sign.

Buying & Selling a Business4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
← All articles
Key takeaways
  • Ontario's Employment Standards Act bans most employer–employee non-competes, but it has an exception for a sale of a business.
  • The sale-of-business exception requires that the seller agree not to compete as part of the sale and immediately afterward become the buyer's employee.
  • Non-competes made before October 25, 2021 are not prohibited by the ban.

If you are paying for a business, you are paying for its customers and goodwill. A seller who sells to you and then opens next door can take that value right back, so most buyers want a non-compete clause in the purchase agreement.

Ontario changed its rules on non-competes in 2021, and the change affects some business sales. This article explains how the rules work, where the exceptions are, and what to check so you can ask the right questions before you sign.

The general ban on non-competes in Ontario

Since October 25, 2021, no employer may enter into an employment contract or other agreement with an employee that is, or includes, a non-compete agreement. A non-compete made in breach of this is void.

The ban is about agreements between an employer and an employee. It matters in a business sale because many sellers stay on after closing to help with the transition, and then the seller is also an employee.

The sale-of-business exception

The ban does not apply to a sale-of-business non-compete if both of these conditions are met:

For this rule, a sale includes a lease. The ban applies to agreements between an employer and an employee. How it applies to a seller who walks away at closing and does not become your employee depends on the facts of your deal. That is worth reviewing with a lawyer.

Ontario's guide describes this exception in terms of a sole proprietorship or partnership, although the wording of the section itself does not say so. If the seller is a corporation, or the people you want bound are its owners, confirm the structure with a lawyer so the clause fits the exception.

Other exceptions and older agreements

SituationIs the ESA ban applied?
Sale-of-business non-compete where the seller immediately becomes your employeeBan does not apply
Employee who is an executive, such as a CEO, president or CFOBan does not apply
Non-compete agreed before October 25, 2021Not prohibited by the ban
Non-compete in an ordinary employment contract signed after that dateVoid

Executive means a CEO, president, chief administrative officer, chief operating officer, chief financial officer, chief information officer, chief legal officer, chief human resources officer, chief corporate development officer, or any other chief executive position. If you plan to hire the seller or key staff after the deal, how they are classified can decide whether a non-compete can be used.

Drafting a clause that is more likely to be enforced

Whether a non-compete can be enforced depends on the facts of your deal, so it is worth having a lawyer review the clause. The practical points below can help you and your lawyer frame the clause around the business you are actually buying.

What to do next

Raise the non-compete early, in the letter of intent or offer, rather than after the price is agreed. Decide whether the seller will stay on as an employee, because that affects which rules apply. Ask whether the seller's existing employment or shareholder agreements contain restrictions that matter, remembering that older non-competes are not prohibited by the ban.

Have a lawyer draft or review the clause. Whether a particular restriction is reasonable depends on the facts and on court decisions, and the answer can be different for a corner store and a regional services company.

Frequently asked questions

Can I put a non-compete in my business purchase agreement in Ontario?

It depends on how the deal is set up. The employment-law ban covers agreements between an employer and an employee, and it has an exception for a non-compete agreed as part of a sale of a business when the seller immediately becomes the buyer's employee. Where the seller does not become your employee, how the rules apply depends on the facts, so it is worth confirming with a lawyer.

Does the ban apply to non-competes signed before 2021?

The ban took effect October 25, 2021. Ontario's guide says it does not prohibit non-compete agreements entered into before that date.

Does a lease count as a sale for the exception?

Yes. For this section, a sale includes a lease. The same two conditions still need to be met.

What if the seller is an executive I plan to hire?

The ban does not apply to an employee who is an executive, such as a CEO, president or CFO. Whether a particular role qualifies is worth confirming with a lawyer.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

This is a business purchase or sale question

Start a file online — flat, published fees, reviewed by a licensed lawyer before a dollar is owed.

ContactStart a File →