“Are non-competes even enforceable?” is one of the most common questions I get, and the honest answer is: it depends entirely on which non-compete you mean. An employee non-compete and a sale-of-business non-compete live in two different legal worlds.
Ontario’s Working for Workers Act, 2021 prohibits non-compete clauses in employment agreements, and has since late 2021. Put one in an employment contract and it’s void — you can’t enforce it even if the employee agreed to it. There are two main exceptions: a sale of a business where the seller becomes an employee of the buyer, and executive roles — the C-suite, meaning genuine chief officers, not anyone with “manager” in their title. This is Ontario law; other provinces haven’t banned employee non-competes outright, and the common law still runs underneath all of it.
The ban is specific to non-competes. You can still protect a business with a non-solicitation clause — don’t poach our clients or our staff — and with confidentiality obligations. For most employers, those are actually what you need: you don’t really care if a former employee competes in the abstract, you care if they take your customers, your team, or your information. Well-drafted non-solicit and confidentiality clauses do that job and remain enforceable.
When you sell your business, the buyer is paying for the goodwill you built — the customers and reputation that make it worth more than its equipment. A non-compete stops you from walking across the street, reopening, and taking that goodwill back. Canadian courts, right up to the Supreme Court, enforce sale-of-business non-competes far more readily than employment ones, because this is a deal between two commercial parties who negotiated a price, not an imbalance between an employer and an individual. If you’re selling, expect the buyer to require one — and expect it to stick.
Even a non-compete that’s allowed in principle still has to be reasonable on three dials: scope (what activity it restricts), duration (how long it lasts), and geography (where it applies). Overreach on any one and a court can strike the entire clause — and Canadian courts generally won’t rewrite an overbroad covenant into a narrower one to save it. A three-year, nationwide ban on “any business” is far more likely to fail than a tightly drawn one that matches what the buyer actually paid for. Precision protects both sides.
A covenant a court can’t interpret with confidence is unenforceable, full stop. If reasonable people could read the restricted territory or activity two different ways, that ambiguity tends to sink the clause. Vague is not safe — vague is void.
If you’re an employer in Ontario: don’t rely on employee non-competes, use non-solicitation and confidentiality instead, and reserve non-competes for genuine sales and executives. If you’re selling your business: expect a non-compete and negotiate its scope, length, and territory down to what’s fair rather than signing the buyer’s first draft. If you’re buying: draft it carefully and reasonably, because an overreaching clause can leave you with no protection at all.
If someone’s asking you to sign a non-compete — or you’re trying to rely on one — a short read by a lawyer will usually tell you quickly whether it’s worth the paper.
Twenty minutes, no charge — a straight read on where you stand.
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