Definition

Key-person risk

Key-person risk is the risk that a business’s results depend heavily on one individual — an owner, a licensed tradesperson, a single salesperson holding the client relationships — so that person leaving would measurably hurt revenue or operations. Buyers respond with a lower multiple, a longer transition, or a retention agreement.

Reviewed

Every small business concentrates some knowledge in a few heads, but key-person risk becomes a deal issue when one person’s absence would be hard to replace on any reasonable timeline. It looks different in every business: a restaurant built around one chef, a trades company where only the owner holds the licence, an agency where a single account manager holds every client relationship.

Where it commonly hides

  • A licence, certification or bond held personally rather than by the corporation
  • Supplier or customer relationships that were never put in writing
  • Pricing logic, a proprietary process or a real vendor contact that lives only in one person’s head
  • A family member working below market wages who is not staying after closing

How it gets priced or managed

A buyer cannot remove key-person risk before closing, but a seller can shrink it — cross-training a second employee, moving a licence to the corporation where the regulator allows it, putting supplier terms in writing. Where the risk can’t be removed, it usually shows up as a longer transition period, an earn-out, or a retention agreement that keeps the key person incentivized to stay.

Sources

This definition is checked against primary sources. Links were last confirmed on the dates shown.

  1. 01
    Treadstone LawLegal commentary
    Key-Person Dependency
    treadstonelaw.ca·Checked Aug 14, 2026
  2. 02
    Treadstone LawLegal commentary
    Key Employee Retention Agreements
    treadstonelaw.ca·Checked Aug 14, 2026
  3. 03
    Canada Revenue AgencyGovernment
    Selling a business
    canada.ca·Checked Aug 14, 2026

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