California is the most aggressive state in the country on non-compete enforceability. The rule has been the same for over a century — Business and Professions Code § 16600 declares void "every contract by which anyone is restrained from engaging in a lawful profession, trade, or business of any kind." Recent legislation has tightened the rule further, extending the ban to customer non-solicits and to agreements signed in other states.
If you live or work in California and have signed a non-compete, the default rule is that it cannot be enforced against you.
The rule, in plain terms
- § 16600 — void by default: Almost all post-employment non-compete agreements are void and unenforceable in California. The narrow exceptions (sale of business, dissolution of partnership) do not apply to most employees.
- Customer non-solicits — also void: California courts have extended § 16600 to most customer non-solicitation agreements. The 2024 Edwards v. Arthur Andersen progeny and AB 1076 (effective 2024) made this explicit — non-solicits that effectively prevent former employees from doing business with former customers are void.
- Employee non-solicits — more nuanced: Non-solicits of former co-workers are sometimes upheld if narrowly tailored. The Loral Corp. line of cases allows some restrictions, but the post-AB 1076 trend is increasingly skeptical.
- Trade secret protection — still available: Even without a non-compete, employers retain rights under the California Uniform Trade Secrets Act. Misappropriation of confidential information can be enjoined; competing in the same industry cannot.
- Out-of-state non-competes — also void: AB 1076 and SB 699 (2024) made it unlawful to enforce a non-compete against a California employee even if the contract was signed in another state.
- Notice requirement (2024): Employers who used non-competes with California employees were required to send notice by February 14, 2024 that the agreements are void. Failure to provide notice is itself unlawful.
- Remedies: § 16600.5 allows employees to recover attorney's fees and damages from employers who attempt to enforce a void non-compete.
Scripts to use
When a former employer threatens enforcement:
"Under California Business and Professions Code § 16600 and the 2024 amendments (SB 699 and AB 1076), the non-compete provision in my employment agreement is void and unenforceable. Any attempt to enforce it exposes the employer to liability for damages and attorney's fees under § 16600.5. I am asking that you withdraw the demand within 14 days."
When a new employer asks about a prior non-compete:
"I signed a non-compete with [former employer], but California § 16600 makes that agreement void as to my future California employment. I have a written notice from my prior employer confirming the agreement is void [if available], and counsel has advised me that the prior non-compete is unenforceable."
When the agreement is from an out-of-state employer:
"Under California SB 699 (effective 2024), a non-compete signed in [state] is unenforceable against me as a California employee, regardless of the choice-of-law provision. Please confirm in writing that the non-compete will not be enforced."
What to document
- The non-compete agreement itself, with the signature page
- The choice-of-law and venue provisions in the agreement
- Any notice from the former employer about the void status of the agreement (required by Feb 14, 2024)
- Your California work history (showing you are a California employee)
- Any communications from the former employer attempting to enforce the agreement
- Your offer letter or contract with the new employer, if applicable
When to escalate
If a former employer attempts to enforce a non-compete:
- Consult a California employment attorney immediately. Many take these cases on contingency or hybrid fee arrangements, and § 16600.5 makes attorney's fees recoverable from the former employer.
- The new employer may want to share counsel — the new employer can also be a target of tortious interference claims and has a parallel interest in defeating the non-compete.
- Preserve all communications. Threatening letters from a former employer's counsel are evidence supporting § 16600.5 claims.
- Do not delay your start date or modify your job duties based on the non-compete unless counsel advises. The default rule strongly favors the employee.
California's non-compete rule is the most employee-favorable in the country. A demand letter referencing § 16600 and § 16600.5 frequently resolves disputes quickly — former employers usually back down rather than face fee-shifting liability.
Educational content only — not legal advice. Employment law varies by jurisdiction and situation. Consult a qualified employment attorney for advice specific to your circumstances.