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Reviewing Employee Contracts and Severance Exposure Before an Ontario Business Purchase

Buying an Ontario business? Learn how to review employment contracts and estimate hidden severance exposure before you sign a purchase agreement.

Buying & Selling a Business7 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-07
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Key takeaways
  • Termination costs in Ontario come from two separate sources: the statutory minimums set by the Employment Standards Act, 2000 (ESA), and — separately — the common-law right to reasonable…
  • Work through the target's HR file employee by employee, not just by policy.
  • Buyers sometimes assume ESA compliance is the whole story.

When you buy an Ontario business, you are not only buying its equipment, its customer list, or its shares — you may also be inheriting its people problems. Every employment contract on the target's payroll carries a shadow question: what would it cost to end that relationship tomorrow? A careful review of employee contracts and severance exposure before you sign is one of the few due diligence steps that can change your purchase price, your deal structure, or your appetite for the deal at all.

Sellers rarely flag this exposure on their own, because from the seller's side it looks like ordinary business as usual — long-serving staff, informal arrangements, a handshake understanding about bonuses. From a buyer's side, each of those employees represents a potential future cost. This article explains what to look for and why it matters.

Why Employee Contracts Deserve Early Attention

Termination costs in Ontario come from two separate sources: the statutory minimums set by the Employment Standards Act, 2000 (ESA), and — separately — the common-law right to reasonable notice that applies unless a written contract validly limits it. A business with long-tenured employees and no enforceable termination clauses can be sitting on significant, unbooked liability that never shows up on a balance sheet.

This matters most for employees who would be expensive to let go: long service, senior roles, and no properly drafted contract capping their entitlement. Reviewing contracts early — ideally before you sign a letter of intent — lets you price that risk into the deal instead of discovering it after closing.

What to Review in Each Employment Contract

Work through the target's HR file employee by employee, not just by policy. A checklist for each key employee:

Statutory Minimums vs. Common-Law Notice: Two Different Exposures

Buyers sometimes assume ESA compliance is the whole story. It is not — it is the floor, not the ceiling.

ESA statutory minimumsCommon-law reasonable notice
SourceEmployment Standards Act, 2000Court-developed principles
Applies whenAlmost always, as a minimumWhere no valid, enforceable contract limits it
CeilingFixed by statuteNo fixed cap — assessed case by case
Key driversLength of service, employer sizeAge, position, length of service, availability of comparable work

The ESA also has a distinct statutory severance pay entitlement (on top of termination pay) that generally applies only where an employee has at least five years of service and the employer meets a size threshold — a global payroll of $2.5 million or more, or having severed 50 or more employees within a six-month period due to a permanent business closure (figures as of mid-2026 — verify the current thresholds before relying on them). Where a written contract does not validly displace common-law notice, an employee's real exposure on termination can run well beyond the ESA numbers alone.

Share Sale or Asset Sale? The Structure Changes the Exposure

The legal structure of the deal changes who is on the hook:

Turning the Review Into a Number You Can Negotiate

Once you know which employees carry the highest exposure — long service, senior compensation, no enforceable termination clause — you have leverage. Buyers commonly respond by adjusting the purchase price, negotiating a holdback tied to employment claims, or asking the seller for specific representations, warranties, and indemnities covering pre-closing employment liabilities. There is no standard formula for this adjustment; it depends entirely on the specific employees and contracts involved, which is exactly why this review should happen with a lawyer before you are locked into price and terms.

Frequently asked questions

Do I have to keep the seller's employees after I buy the business?

It depends on the deal structure. In a share sale, employment continues automatically because the employer entity does not change. In an asset sale, you generally are not required by statute to hire any specific employee, though continuity rules can apply to anyone you do hire from the seller's workforce.

If there's no written contract at all, does that help the buyer?

Not necessarily. Without an enforceable written termination clause, an employee typically falls back to common-law reasonable notice, which can be higher than the ESA minimums a written contract might have validly capped. A missing contract is often a red flag, not a shortcut.

Can I renegotiate an employee's terms after closing?

Employment terms can generally be changed going forward with proper notice or agreement, but you cannot retroactively reduce entitlements an employee has already accrued, and unilateral changes can themselves create legal risk. This needs case-by-case employment law advice.

Does a non-compete signed by the departing owner still hold up?

It depends on how it was signed and by whom. Since a 2021 legislative change, general employee non-competes are largely unenforceable in Ontario, with narrow exceptions — including where a seller becomes an employee of the purchaser as part of the sale. Whether a specific clause fits an exception needs individual review.

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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