The Reasonable Notice Exposure a Buyer Inherits in an Ontario Share Purchase

Buyers thinking about a share purchase often focus on the obvious inherited risks — unpaid taxes, pending lawsuits, undisclosed contracts. One risk that gets less attention, but can be just as significant, is quieter and slower-building: the accumulated reasonable notice exposure tied to every long-serving employee of the target corporation. It doesn't show up as a line item on a balance sheet, but it is very real, and it comes with the shares whether the buyer thought about it or not.

This article explains where that exposure comes from, why it is structurally different in a share purchase than in an asset purchase, and what buyers actually do about it.

Why a Share Purchase Doesn't Reset Anything

In a share purchase, the buyer acquires the shares of the corporation — not the underlying employment relationships, because those relationships were never disturbed in the first place. The corporation that has always employed the staff keeps employing them; only its ownership changes. There is no new hiring event, no new start date, and no legal "clean slate" created by the transaction.

That matters enormously for reasonable notice. At common law, an employee's entitlement to notice (or pay in lieu) if their employment is ever terminated without cause is generally assessed based on factors including their length of service, age, position, and the availability of comparable employment — and length of service, in particular, simply keeps accumulating for as long as the employment relationship continues uninterrupted. Because a share sale doesn't interrupt that relationship at all, every year an employee has worked for the corporation — before the sale and after — counts toward that assessment.

Contrast: How an Asset Sale Is Different

In an asset purchase, the buyer is typically a different legal entity, and hiring the seller's employees is a new decision, not an automatic continuation. Ontario's employment standards legislation does provide a statutory continuity-of-service rule where a buyer hires the seller's employees as part of a going-concern sale — but that rule is aimed at statutory minimums (vacation, statutory notice, and similar entitlements), not at common-law reasonable notice. A purchaser in an asset deal does not automatically inherit the seller's common-law notice exposure just because certain statutory minimums carry over.

A share purchase offers no equivalent buffer. Because the employer entity itself never changes, there is nothing to reset — the full common-law notice profile of every employee, including anyone who has worked there for decades, simply continues to sit with the corporation the buyer now owns.

Why Long-Tenured Employees Are the Real Risk

The exposure is not evenly distributed across a workforce. A newer employee's potential notice entitlement is comparatively modest. A long-serving employee — particularly someone in a senior or specialized role who might reasonably be expected to have a harder time finding comparable work — represents a much larger, and much less visible, contingent liability. None of this shows up anywhere on a financial statement; it only becomes concrete if and when that employee's job actually ends without cause.

This is exactly why a target company's staff roster and average tenure are worth reviewing carefully as part of due diligence in a share deal, not treated as a footnote to the financials.

How Buyers Manage This Risk in Practice

1. Due diligence on the workforce itself — reviewing employment contracts, tenure, compensation, and any existing termination or severance arrangements for key and long-serving employees.
2. Representations and warranties — having the seller specifically represent the accuracy of employment records and confirm there are no undisclosed issues affecting the workforce.
3. Indemnities — allocating financial responsibility back to the seller for notice or severance claims tied to pre-closing conduct or circumstances, subject to the negotiated caps and time limits in the agreement.
4. Price adjustment — reflecting known or estimated future notice exposure in the purchase price itself, rather than only in post-closing contractual protections.
5. Employment contract review going forward — for some key employees, buyers use the transaction as an opportunity to put updated, clearly drafted employment agreements in place (with proper consideration for any new terms), which can help manage risk on a go-forward basis without erasing what has already accrued.

None of these tools eliminate the underlying exposure — they allocate and manage it. The exposure itself is a structural feature of buying a corporation with employees, not a drafting mistake to be fixed.

Frequently asked questions