Are Non-Compete Clauses Enforceable Against Regulated Professionals Selling a Practice in Ontario?

When a physician, dentist, accountant, or lawyer sells their practice, the buyer's biggest fear isn't usually the price — it's that the seller will simply reopen down the street and take the patients or clients with them. A non-compete clause is the standard tool for addressing that risk. But whether it will actually hold up depends on a mix of Ontario employment law, general contract principles, and sometimes the seller's own regulatory obligations.

The short version: non-competes tied to the sale of a practice sit in a meaningfully different legal category than non-competes imposed on an ordinary employee — but "different category" doesn't mean "automatically enforceable." Several distinct questions need to be worked through.

Start With a Threshold Question: Employee or Not?

Ontario's Employment Standards Act, 2000 now generally prohibits employers from entering non-compete agreements with employees, with two recognized exceptions:

• Where the person signing the non-compete is selling a business (or part of one) and becomes an employee of the purchaser as part of that sale, and
• Where the person is an executive in a defined, C-suite-style role.

That ban applies to employees. Many regulated professionals selling a practice — a physician who bills OHIP independently, a partner in an accounting or law firm, a dentist who owns their own clinic — may not be "employees" of anyone before or after the sale at all. Whether the ESA's non-compete rules even apply to your situation can turn on how you're actually engaged: as an employee of the purchaser, an independent contractor, a partner, or simply a seller who walks away after closing. That classification question deserves its own careful look before assuming either that the ban protects you or that it doesn't apply to you.

If the ESA Framework Does Apply

Where a selling professional is becoming an employee of the purchaser as part of the deal, the business-sale exception can allow a non-compete to be used — but "allowed under the ESA" is only the first hurdle. The clause still has to hold up under ordinary contract principles.

Where the ESA framework doesn't apply — because the seller isn't becoming an employee at all — the non-compete is governed by general common-law contract principles instead, which brings us to the next layer.

The Common-Law Layer: Sale-of-Business Non-Competes vs. Employment Non-Competes

Ontario courts have long drawn a distinction between:

• Non-competes tied to the sale of a business, where the seller is being paid, in part, for the goodwill they're agreeing not to compete against, and
• Non-competes imposed on employees, where there's typically a significant imbalance of bargaining power.

Courts have generally shown more willingness to enforce reasonable non-competes in the sale-of-business context than in the employment context, on the reasoning that a seller who negotiated (and was paid for) the restriction is in a different position than an employee who simply had to accept one as a condition of a job. That said, "more willing" is not "automatic" — a non-compete still has to be reasonable in what it restricts, where, and for how long, and an overly broad clause can still fail regardless of the context it arose in. There's no fixed formula for what counts as reasonable; it depends on the specific practice, market, and terms of the deal, which is exactly the kind of assessment a lawyer needs to make on your actual facts rather than a general rule of thumb.

The Regulatory Layer: Your College May Have Its Own View

On top of contract law, many regulatory colleges have their own expectations around patient or client care, continuity, and how a departing professional communicates with the people they've served. These can matter in practice even where a non-compete would otherwise be enforceable as a matter of contract:

• Some colleges take a position on non-solicitation of patients/clients, which is a related but distinct concept from a non-compete restricting where you can practise at all.
• A professional's overriding duties to patients or clients (continuity of care, informed choice about who continues to treat or represent them) can shape how a non-compete or non-solicitation clause is drafted and applied in practice, even if the contract itself is enforceable.
• This is a profession-by-profession question — don't assume your college's approach mirrors another regulated profession's.

Common Misconceptions

• "Non-competes are banned in Ontario now, so this clause is worthless." The ESA ban targets employee non-competes broadly, but a genuine sale-of-business non-networking clause — especially where the seller isn't becoming an ordinary employee at all — is a different legal question, governed by common-law reasonableness rather than the statutory ban.
• "As long as I got paid for the practice, any non-compete I signed is enforceable." Being paid supports enforceability in the sale-of-business context, but the clause's actual scope, duration, and geography still have to be reasonable — an unreasonably broad clause can still fail.
• "My college's rules don't matter once I've signed a contract." A contractually valid non-compete and a college's expectations around patient or client transition are separate layers that can both apply to the same situation.

Frequently asked questions