What is a non-compete?
A non-compete is a contractual promise not to engage in a competing business for a defined period and within a defined area. In an acquisition, it is the seller's promise not to turn around and rebuild the very business they just sold; in employment, it is a key employee's promise not to join or start a competitor after leaving.
In M&A, the non-compete protects the value the buyer paid for. A buyer purchasing a company is largely buying its customers, know-how, and goodwill — assets that walk out the door if the founder can immediately launch a rival. The covenant locks that value in place for long enough for the buyer to integrate and retain it.
Enforceability is the defining issue. Courts and statutes vary widely on whether and how far non-competes can be enforced, and the rules differ sharply between the deal context and the pure employment context — a non-compete tied to the sale of a business is generally treated far more favorably than one imposed on an ordinary employee.
How a non-compete is structured
A defensible non-compete is bounded on three dimensions, each scoped no broader than needed to protect the legitimate interest at stake.
- Duration. The length of the restriction. Deal-related non-competes covering a seller tend to run longer than employment non-competes, because the buyer is protecting purchased goodwill rather than restraining a worker.
- Geography. The territory where competing is barred, usually tied to where the business actually operates and serves customers.
- Scope of activity. The specific lines of business or activities prohibited, defined narrowly enough to map to the actual business being protected rather than barring the person from an entire industry.
- Consideration. What the restricted party receives in exchange — the purchase price in a deal, or compensation in employment — which courts weigh in deciding reasonableness.
Overbroad covenants risk being narrowed or struck down entirely, so well-drafted ones are deliberately conservative on time, place, and activity.
Why enforceability is the whole game
A non-compete is only worth what a court will enforce, and that varies enormously by jurisdiction. Some places enforce reasonable covenants readily; others restrict or prohibit them, particularly in the employment setting, and the regulatory landscape around employee non-competes has been actively contested. The sale-of-business context is consistently treated more leniently, because both sides bargained at arm's length and the seller was paid for the restriction.
The practical takeaway is that the same words can be fully enforceable in one jurisdiction and void in another, and a covenant that is reasonable for a paid-out founder may be unenforceable against a rank-and-file employee. This is why non-competes are usually paired with non-solicit and confidentiality covenants, which tend to be more reliably enforceable and protect overlapping interests.