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Non-Solicitation and Non-Competition Clauses for Ontario Employees: What Employers Need to Know

Ontario's ESA ban on non-competes explained, plus what non-solicitation clauses can still do for employers. Plain-language guide to restrictive covenants.

Corporate5 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-06
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Key takeaways
  • The ESA was amended to address non-competition agreements entered into with employees (as distinct from business-to-business arrangements such as the sale of a business).
  • A non-solicitation clause is different from a non-competition clause.
  • Even before the ESA amendment, Ontario courts applied a demanding test to any restrictive covenant in an employment contract.

When a key employee leaves your business, what stops them from calling your best clients or going to work for your direct competitor the next Monday morning? Ontario employers have historically relied on restrictive covenants — non-solicitation and non-competition clauses — to protect their legitimate business interests after employment ends. The law in this area changed significantly, and employers need to understand what is still available and what is not.

As of writing: Ontario's Employment Standards Act, 2000 includes provisions that affect the enforceability of non-competition agreements for employees. You should verify the current status of these provisions and how they apply to your situation, as this area of law continues to evolve.

The ESA and Non-Competition Agreements

The ESA was amended to address non-competition agreements entered into with employees (as distinct from business-to-business arrangements such as the sale of a business). As of writing, the ESA prohibits employers from entering into agreements with employees that are, in whole or in part, non-competition agreements — with a specific exception.

The exception: The prohibition does not apply to a non-competition agreement that is entered into in connection with the sale of a business or the sale of a person's interest in a business, where the seller becomes an employee of the purchaser after the sale.

This means that if you are a typical employer and you ask a regular employee to sign a non-competition clause in their employment contract, that clause may be unenforceable under the ESA as of writing — regardless of how narrowly it is drafted or how reasonable it seems.

Verify this: The law in this area is developing. Courts and tribunals are still working through the implications of the ESA amendment. Some questions remain about how the amendment interacts with common-law enforceability principles for agreements entered into before the amendment came into force. Consult a lawyer before drafting or relying on any non-competition clause in an employment agreement.

Non-Solicitation Clauses: Still Available (With Conditions)

A non-solicitation clause is different from a non-competition clause. Rather than barring an employee from working in the same industry, a non-solicitation clause restricts the former employee from:

The ESA prohibition described above targets non-competition agreements specifically. Non-solicitation clauses are not captured by the same prohibition and can still be used in Ontario employment agreements — but they must satisfy the common-law test for enforceability.

The Common-Law Test for Restrictive Covenants

Even before the ESA amendment, Ontario courts applied a demanding test to any restrictive covenant in an employment contract. A clause is only enforceable if it is:

1. Reasonable Between the Parties

The clause must protect a legitimate proprietary interest — your confidential information, trade secrets, client relationships, or goodwill — not simply prevent competition. A clause that is broader than necessary to protect that interest will be struck down.

2. Reasonable as to Scope

The clause must be limited in three dimensions:

3. Not Contrary to the Public Interest

Courts will not enforce a clause that functions as a general restraint of trade or that prevents an employee from earning a living.

Protecting Confidential Information and Trade Secrets

Even where non-competition clauses are off the table and non-solicitation clauses require careful drafting, employers still have a powerful tool: confidentiality obligations. Employees have both a common-law and a contractual duty not to use or disclose confidential employer information — client lists, pricing models, business strategies, proprietary processes.

A well-drafted confidentiality clause:

Confidentiality obligations are generally easier to enforce than non-solicitation or non-competition clauses and can be just as effective for many employers.

Practical Advice for Employers

1. Know what you are actually trying to protect. Before drafting any restrictive covenant, identify the real risk. Is it clients walking out the door? Employees being poached? Proprietary business methods being disclosed? Match the remedy to the risk.

2. Use non-solicitation, not non-competition, for most employees. For the vast majority of employees, a non-solicitation clause — with confidentiality — gives you meaningful protection. Reserve more aggressive restrictions for senior executives or truly unique situations, and understand the current ESA landscape before including a non-compete.

3. Draft narrowly. Courts have consistently refused to "blue-pencil" (rewrite) overbroad clauses to make them reasonable. An unenforceable clause is void. A too-broad clause does not become enforceable just because you hoped it would. Draft narrow and specific from the start.

4. Secure the clause properly. A restrictive covenant must be introduced before or at the start of employment, or accompanied by fresh consideration if added later. An employee who signs a non-solicitation clause mid-employment without receiving anything in return (a raise, a promotion, a bonus) may later challenge it.

5. Review existing agreements. If your current employment agreements include non-competition clauses that were signed before the ESA amendment, the enforceability of those clauses against current employees is an open question. Review your template with a lawyer.

Frequently asked questions

Does the ESA non-compete prohibition apply to executives?

As of writing, there is no blanket executive exemption in the ESA's non-compete prohibition. Verify whether any current exceptions apply to your specific situation.

Can I use a non-compete clause in an asset purchase agreement when hiring the seller?

Yes — the ESA's prohibition includes an exception for non-competition clauses entered into in connection with the sale of a business where the seller becomes an employee of the purchaser. These arrangements are treated differently from standard employment relationships.

What remedies do I have if a former employee solicits my clients anyway?

If you have a valid non-solicitation clause, you can seek an injunction (court order stopping the conduct) and damages. Even without a clause, misuse of confidential information (such as using a customer list they took) may support a separate claim.

How do I protect customer relationships if I can't use a non-compete?

A narrowly drafted non-solicitation clause combined with a strong confidentiality provision is the most practical approach for most Ontario employers. In some industries, building in client relationship structures that are not dependent on a single employee is also a sound business strategy.

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.

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