California Noncompete Law

The noncompete clause prohibits a contract restricting someone’s ability to compete with a business, accept new employment opportunities in a similar line of work, or establish a competing company.

 

Author: Brad Nakase, Attorney

Email  |  Call (800) 484-4610

Definition.

One may be in breach of a non-compete covenant if he or she signed a written agreement not to compete and subsequently either (1) used a former employer’s trade secrets or customer lists to the former employer’s detriment; or (2) operated a business within the same, or within a specified, time and geographical area as a similar business that he or she sold to another. (See Dowell v. Biosense Webster, Inc. (2009) 179 Cal.App.4th 564.)

Element 1: Valid Existing Contract

In a breach of contract action, the plaintiff must plead the existence of a contract and its terms that establish the obligation at issue. The complaint must indicate on its face whether the contract is written, oral, or implied by conduct. If the action is based on an alleged breach of a written contract, the terms must be set out verbatim in the body of the complaint, or a copy of the written contract must be attached to the complaint and incorporated by reference. (Daniels v. Select Portfolio Servicing, Inc. (2016) 246 Cal.App.4th 1150; FPI Dev., Inc. v. Nakashima (1991) 231 Cal.App.3d 367, 383; Otworth v. Southern Pac. Transp. Co. (1985) 166 Cal.App.3d 452, 458-59.)

“The terms of a contract are reasonably certain if they provide a basis for determining the existence of a breach and for giving an appropriate remedy. Where a contract is so uncertain and indefinite that the intention of the parties in material particulars cannot be ascertained, the contract is void and unenforceable.” (Moncada v. West Coast Quartz Corp. (2013) 221 Cal.App.4th 768, 777.)

A contract is an agreement to do or not to do a certain thing and gives rise to an obligation or legal duty that is enforceable in an action at law. (AMCO Ins. Co. v. All Solutions Ins. Agency, LLC (2016) 224 Cal.App.4th 883; Schaefer v. Williams (1993) 15 Cal.App.4th 1243, 1246 [no contract existed because political candidate did not promise anyone that he would abide by code of Fair Campaign Practices].)

Stating the substance and legal effect of the contract in the complaint is sufficient, but attaching a copy of a written contract to the complaint is advisable. (Miles v. Deutsche Bank National Trust Co. (2015) 236 Cal.App.4th 394.)

A severable contract is one that is susceptible of division in two or more parts. The failure to prove breach of contract for one part of a severable contract does not bar plaintiff’s right to recovery for breach of another part of the severable contract. (Armstrong Petroleum Corp. v. Tri-Valley Oil & Gas Co. (2004) 116 Cal.App.4th 1375.)

Element 2: Valid Non-Compete Covenant

The non-compete covenant in the contract must be enforceable under California law. (See Cal. Bus. & Prof. Code, §§16600-16607.)

        Reasonable and Clear

At common law, a restraint against competition was valid to the extent it reasonably provided for the protection of a valid interest of the buyer from the seller; such rule of reasonableness in connection with the sale of business has been codified under Business and Professions Code section 16601. (Monogram Indus., Inc. v. Sar Indus., Inc. (1976) 64 Cal.App.3d 692, 698 [Business & Professions Code section 16601 permits enforcement of a covenant prohibiting the seller from operating a business in the area where the old business is located, so long as the buyer operates the business in that area].)

Courts measure the reasonableness of covenants that tend to restrain trade by using a number of factors, including:

    • Appropriateness of the restraint in advancing the interest to be protected;

    • Availability of less harmful alternatives;

    • Nature of interest interfered with which covenant interfered;

    • Intent of parties or tendency of restraint to create monopoly; and

    • Social or economic justification for any monopoly if it does result.

(Quidel Corp. v. Superior Court of San Diego Cnty. (2020) 57 Cal.App.5th 155.)

The non-compete provision must be certain enough to be enforceable. (Drzewiecki v. H&R Block, Inc. (1972) 24 Cal.App.3d 695, 700, 704-05.)

The non-compete provision need not set forth a definite termination date if it clearly provides for a year to year term. (Centeno v. Roseville Community Hosp. (1979) 107 Cal.App.3d 62, 68.)

        Personal Restraint

Covenants that are designed simply to prevent competition are per se unenforceable. (Metro Traffic Control, Inc. v. Shadow Traffic Network (1994) 22 Cal.App.4th 853, 860.)

A contract provision may be void as a partial restraint on one’s right to engage in business. (Morris v. Harris (1954) 127 Cal.App.2d 476, 476-77 [void provision tried to make janitor liable for liquidated damages if, within a fixed period, he solicited for himself or accepted for himself without solicitation, any clients needing janitorial services].)

Restraining an individual from seeking employment elsewhere violates public policy and constitutes an unreasonable burden on the employee. (Cerberonics, Inc. v. Unemployment Ins. Appeals Bd. (1984) 152 Cal.App.3d 172, 177.)

A covenant restricting at-will employees from providing traffic reporting services to any television or radio station for one year after termination was unenforceable. (Metro Traffic Control, Inc. v. Shadow Traffic Network (1994) 22 Cal.App.4th 853, 859-61 [restriction severely restricted employees’ mobility and betterment].)

Anti-solicitation covenants are void as unlawful business restraints except where enforcement is necessary to protect trade secrets. (Moss, Adams & Co. v. Shilling (1986) 179 Cal.App.3d 124, 130.)

An employee’s agreement not to use his employer’s confidential customer list to solicit customers for himself for one year after termination of employment did not prevent the employee from conducting the same or any other business for himself, and hence, was not void as having an unlawful object. (Gordon v. Wasserman (1957) 153 Cal.App.2d 328, 330.)

In determining that it would not rewrite an illegal covenant not to compete by construing it as merely barring misappropriation of confidential customer lists and trade secrets, the court reasoned that to do so would undermine Business and Professions Code section 16600. (Kolani v. Amitai Gluska (1998) 64 Cal.App.4th 402.)

A reasonable agreement not to use a confidential customer list is valid and enforceable. (Weissensee v. Chronicle Publ’g (1976) 59 Cal.App.3d 723, 731; see also John F. Matull & Assoc. v. Cloutier (1987) 194 Cal.App.3d 1049, 1054.)

Non-competition agreements may be appropriate to protect trade secrets. (Muggill v. Reuben H. Donnelley Corp. (1965) 62 Cal.2d 239, 242.)

The duration of a restrictive agreement is not determinative of its enforceability. Enforceability depends upon its reasonableness, evaluated in terms of employer, employee, and public. (Loral Corp. v. Moyes (1985) 174 Cal.App.3d 268, 279.)

Any party who successfully challenges an unlawful restrictive covenant is entitled to injunctive relief and is entitled to recover three times the amount of the actual damages, if any, and shall be awarded reasonable attorney’s fees together with the costs of suit. (Cal. Bus. & Prof. Code, § 17082.)

        Sale of Business

In the sale of a business, a covenant not to compete will be enforced to the extent that it is reasonable and necessary to protect the buyer’s interest in terms of time, activity, and territory. (Monogram Indus., Inc. v. Sar Indus., Inc. (1976) 64 Cal.App.3d 692, 698-700.)

Covenants arising out of the sale of a business are more liberally enforced than those arising out of the employer-employee relationship. (Monogram Indus., Inc. v. Sar Indus., Inc. (1976) 64 Cal.App.3d 692, 697-98.)

Element 3: Breach

The plaintiff must show that the defendant breached the non-compete covenant. (Loral Corp. v. Robert Moyes (1985) 174 Cal.App.3d 268, 276; Monogram Indus., Inc. v. Sar Indus., Inc. (1976) 64 Cal.App.3d 692, 697, 698.)

The plaintiff must show that the contract was, in fact, breached and that the defendant’s conduct was the cause of the breach. (Loral Corp. v. Robert Moyes (1985) 174 Cal.App.3d 268, 275-76; Monogram Indus., Inc. v. SAR Indus., Inc. (1976) 64 Cal.App.3d 692, 700-01.)

A franchisor who granted a franchisee the exclusive right to use the franchisor’s trademark, trade dress, and a particular location (rather than any exclusive territory or market area) did not violate the franchise agreement by placing competing company stores in the market area. (Eichman v. Fotomat Corp. (9th Cir. 1989) 880 F.2d 149, 167-68.)

Element 4: Resulting Damage

Implicit in the element of damage is that the defendant’s breach caused the plaintiff’s damage. (Troyk v. Farmers Group, Inc. (2009) 171 Cal.App.4th 1305, 1352.)

Any breach, total or partial, which causes a measurable injury, gives the injured party a right to compensatory damages. (Brawley v. J.C. Interiors, Inc. (2008) 161 Cal.App.4th 1126.)

An essential element of breach of contract claims is that a defendant’s alleged misconduct was the cause in fact of the plaintiff’s damage. The causation analysis involves two elements. One is cause in fact. An act is a cause in fact if it is a necessary antecedent of an event. The second element is proximate cause. Proximate cause is ordinarily concerned, not with the fact of causation, but with the various considerations of policy that limit an actor’s responsibility for the consequences of his conduct. (Tribeca Companies, LLC v. First American Title Ins. Co. (2015) 239 Cal.App.4th 1088, 1102-1103.)

Remedies

Compensatory Damages

The measure of damages for breach of contract is the amount which will compensate plaintiff for all detriment proximately caused by the breach or which, in the ordinary course of things, would be likely to result from the breach. (Cal. Civ. Code, § 3300.)

Lost Profits

Future profits can be recovered to extent they can be estimated with reasonable certainty. (Sanchez-Corea v. Bank of America (1985) 38 Cal.3d 892, 907-08; Fisher v. Hampton (1975) 44 Cal.App.3d 741, 747. Lost profits are recoverable to extent they are natural and direct consequence of breach. (Brandon & Tibbs v. George Kevorkian Accountancy Corp. (1990) 226 Cal.App.3d 442, 457, 277; Postal Instant Press v. Sealy (1996) 43 Cal.App.4th 1704, 1709 [franchisee’s failure to make timely royalty payments to franchisor was not a “natural and direct” consequence of the breach because franchisor chose to terminate contract, thus losing entitlement of future royalty payments].)

Equitable Relief

Specific Performance

Specific performance is granted only when money damages are inadequate. (Palo Alto-       Menlo Park Yellow Cab Co. v. Santa Clara County Transit Dist. (1976) 65 Cal.App.3d   121, 132-33.)

 Injunction (Very Limited Availability)

Injunctive relief is largely within discretion of trial court, considering inadequacy of damages to plaintiff, as well as harm to defendant. (Smith v. Mendonsa (1952) 108    Cal.App.2d 540, 543-44.)


Statute of Limitations

Generally, the limitations period is four years for written contracts (Cal. Civ. Proc. Code, §337, subd. (a).) A contract cause of action does not accrue until the contract has been breached. (Spear v. Cal. State Automobile Assn. (1992) 2 Cal.4th 1035, 1042.) The discovery rule may be applied to breaches of contract which can be, and are, committed in secret and, moreover, where the harm flowing from those breaches will not be reasonably discoverable by plaintiffs until a future time. (Gryczman v. 4550 Pico Partners, Ltd. (2003) 107 Cal.App.4th 1, 4-5.)

Affirmative Defenses

Unlawful Restriction of Trade or Business

California Business and Profession Code section 16600 states “except as provided in this chapter, every contract by which anyone is restrained from engaging in a lawful profession, trade, or business of any kinds is to that extend void.” (Cal. Bus. & Prof. Code, §16600.) There are only three statutory exceptions to this prohibition on noncompete agreements: One who sells the goodwill of a business, or all of one’s ownership interest in a business entity (which includes partnerships or corporations), or substantially all of its operating assets and goodwill, to a buyer who will carry on the business may agree with the buyer not to carry on a similar business within a specified geographic area, if the business will be carried on by the buyer (§ 16601); upon dissolution of a partnership or dissociation of a partner, such partner may agree not to carry on a similar business within a specified geographic area, if the business will be carried on by remaining partners or anyone deriving title to the business or its goodwill (§ 16602); and a member of a limited liability company may agree not to carry on a similar business within a specified geographic area, so long as other members or anyone deriving title to the business or its goodwill carries on a like business (§ 16602.5) (Dowell v. Biosense Webster, Inc. (2009) 179 Cal.App.4th 564, 547.)

Have a quick question? We answered nearly 2000 FAQs.

See all blogs: Business | Corporate | Employment

Most recent blogs:

Open A Restaurant Checklist - California Licenses and Permits (2026)

Open A Restaurant Checklist: California Licenses and Permits (2026)

This California restaurant opening checklist covers permits, health inspections, labor rules, and 2026 wage changes affecting new food businesses. It helps owners avoid shutdowns, control costs, and build a compliant restaurant brand in one of the nation’s toughest markets.
Unruh Act Definition - California Website Accessibility Law

Unruh Act Definition: California Website Accessibility Law

California’s Unruh Civil Rights Act can trigger $4,000 statutory damages per access barrier on inaccessible websites. See how it ties to ADA claims, why intent doesn’t matter, and steps to meet WCAG 2.1 AA.
Merger and Acquisition Due Diligence Checklist

Merger & Acquisition M&A Due Diligence Checklist

M&A due diligence checklist covering financials, contracts, IP, cybersecurity, tax, and regulatory risks before signing a merger or acquisition. Includes who leads diligence, what documents to request, red flags to spot, and how findings shape negotiations and integration.
Who Has More Right - A Trustee Or The Beneficiary

Who Has More Rights a Trustee Or The Beneficiary?

This article explains trustee and beneficiary roles, comparing rights, duties, and limits within trusts and living trusts. It covers fiduciary duties, removal options, shared roles, and tips for choosing and supervising trustees.

Can you change the name of your LLC?

Change your LLC name by filing a Certificate of Amendment and updating records with the state, IRS, and FinCEN. Update bank accounts, permits, contracts, vendors, and marketing materials, or use a DBA for a faster public-name switch.
Liquidated Damages Clause - What Is It, And Is It Enforceable

Liquidated Damages Clause: What Is It, And Is It Enforceable?

Liquidated damages clauses set a preset breach amount, so California contracts can limit fights and settle faster when losses are uncertain. Courts enforce them only when the figure is reasonable, triggers are spelled out, and the clause compensates rather than punishes.
Restaurant Surcharge California - New Rules and Menu Disclosure Requirements

Restaurant Surcharge California: New Rules and Menu Disclosure Requirements

California restaurant surcharge rules cover SB 1524, backlash over surprise fees, and required menu disclosures for service charges. From July 1, 2025, fees must be shown wherever prices appear, including online menus, or restaurants risk costly lawsuits.
Restaurant Service Charge California- SB 478 Rules for Junk Fees, Automatic Gratuities, and Menu Pricing

Restaurant Service Charge California: SB 478 Rules for Junk Fees, Automatic Gratuities, and Menu Pricing

Get up to speed on California SB 478, junk fees, restaurant service charges, and new menu pricing rules. See how automatic gratuities and mandatory fees must be advertised to comply, reducing hidden costs and lawsuit risks.
Elements of Libel Definitions, Proof, and Legal Standards

Elements of Libel: Definitions, Proof, and Legal Standards

Libel involves proving false published statements that harm reputation, with specific legal elements and defenses recognized under California law. This guide outlines definitions, proof requirements, statutory rules, and court interpretations shaping successful or failed libel claims.
SB 478 California Law Bans Hidden Fees in Advertising

SB 478: California Law Bans Hidden Fees in Advertising

California SB 478 bans hidden fees in advertising, requiring upfront disclosure of all mandatory costs for products and services. The law, effective July 1, 2024, applies to most businesses serving California customers, with limited exceptions for taxes and shipping.
Compliance Strategy- A Practical Guide to Building, Automating, and Managing Regulatory Requirements

Compliance Strategy: A Practical Guide to Building, Automating, and Managing Regulatory Requirements

A compliance strategy strengthens risk management, improves efficiency, and supports regulatory requirements through clear policies, audits, and staff training. Tools like Sprinto, Secureframe, and Vanta automate monitoring, evidence gathering, and vendor management for stronger compliance programs.
How to Hire a Lawyer in California Step-by-Step Instructions

How to Hire a Lawyer in California: Step-by-Step Instructions

Hiring the right lawyer in California involves knowing your needs, checking qualifications, and reviewing fees before making decisions. This article outlines attorney types, fee structures, deadlines, and key questions to ask before signing any agreement.
What Are the 5 Elements of Defamation in California

What Are the 5 Elements of Defamation in California?

Defamation claims in California require five legal elements including falsehood, public exposure, identification, harm, and the defendant’s fault. Real examples highlight how reputations, jobs, and legal outcomes are affected when defamatory statements meet these conditions under state law.
Comprehensive Guide to California Employment Law - Rights, Rules, and 2025 Updates for Employers and Employees

Comprehensive Guide to California Employment Law: Rights, Rules, and 2025 Updates for Employers and Employees

California’s 2025 employment law updates address at-will status, contracts, workplace leave, wage rules, and discrimination protections. This overview covers employer duties and employee rights on sick leave, terminations, drug policies, family care, and work conditions.
LLC versus Corporation

LLC versus Corporation: Key Differences, Tax Impacts, Ownership Structures, and Management Considerations

Choosing between an LLC and a corporation affects ownership, taxes, management responsibilities, and liability protections for your business structure. Compare differences in formal requirements, legal treatment, and funding opportunities to select the best option.
Best Free Payroll Software for Small Businesses and Startups in 2025

Best Free Payroll Software for Small Businesses and Startups in 2025

Find the best free payroll software options for small businesses and startups in 2025 with essential tools and flexible features. Compare user-friendly platforms offering global payments, tax calculations, employee portals, and cloud access at no cost.
What services does a California business lawyer provide

What Services Does a California Business Lawyer Provide?

A California business lawyer helps protect your company by providing legal guidance on structure, taxation, contracts, and compliance. Their services ensure you avoid costly mistakes and navigate disputes, allowing you to focus on growth.
Where can I find a business lawyer

Where Can I Find a Business Lawyer?

Find a skilled business lawyer to navigate legal matters like contracts, trademarks, and liability issues. Protect your company with expert legal advice and support.
What are the requirements for a business contract termination letter

What Are the Requirements for a Business Contract Termination Letter?

A contract termination letter must clearly state the reason for termination, reference the original contract, and follow required notice procedures. Ensuring proper documentation and adherence to contract terms helps prevent legal disputes and wrongful termination claims.
Are verbal contracts binding in California

Are Verbal Contracts Binding in California?

A verbal contract can be legally binding in California, but proving its terms in court is often difficult. Written agreements provide stronger legal protection, reducing risks of disputes and misunderstandings.
Where Can I Find a Business Lawyer Near Me

Where Can I Find a Business Lawyer Near Me?

Find a business lawyer by seeking referrals, researching credentials, and ensuring they specialize in your industry’s legal needs. Schedule consultations to assess their expertise, compatibility, and pricing structure before making a final decision.
What Is the Statement of Information and When Is It Required

What Is the Statement of Information and When Is It Required?

A Statement of Information is a required filing for California corporations and LLCs, providing key business and leadership details. Filing deadlines vary, requiring annual or biennial submissions to maintain compliance and avoid penalties.
What is indemnity and how does it apply to insurance contracts

What Is Indemnity and How Does It Apply to Insurance Contracts?

Indemnity protects individuals and businesses from financial loss by ensuring compensation for damages under legal agreements, including insurance contracts. Various indemnity policies cover liability, property damage, and professional risks, with terms defining coverage limits and exclusions.
What is gross profit and how is it calculated in financial statements

What Is Gross Profit and How Is It Calculated in Financial Statements?

Gross profit represents the revenue remaining after deducting the cost of goods sold, helping businesses assess production efficiency and pricing strategies. Calculating gross profit involves subtracting direct expenses from revenue, providing insights into cost control and financial performance.
What is gross income and how does it differ from net income

What Is Gross Income and How Does It Differ From Net Income?

Gross income includes all earnings before deductions, while net income is what remains after taxes and expenses. Understanding these figures helps determine tax obligations, loan eligibility, and overall financial health.
What is beneficial ownership information and why is it important for compliance

What Is Beneficial Ownership Information and Why Is It Important for Compliance

Beneficial ownership information helps prevent financial crimes by increasing transparency in corporate structures. Businesses should stay informed on reporting requirements to avoid penalties and ensure compliance with evolving regulations.
What is arbitration and how does it resolve disputes

What Is Arbitration and How Does It Resolve Disputes?

Arbitration resolves disputes by allowing a neutral third party to make binding decisions, offering privacy and efficiency over traditional litigation. Businesses and individuals prefer arbitration for its speed, cost savings, and adaptability, ensuring enforceable outcomes across various legal frameworks.
What is a corporation and how does it differ from an LLC

What Is a Corporation, and How Does It Differ From an LLC?

A corporation is a separate legal entity owned by shareholders, while an LLC offers flexible management and pass-through taxation. Corporations require stricter compliance and structured oversight, whereas LLCs provide fewer formalities and adaptable ownership structures.
How Do You Incorporate a Business, and What Are the Benefits

How Do You Incorporate a Business, and What Are the Benefits?

Incorporating a business creates a separate legal entity, protecting personal assets and offering potential tax advantages. This process enhances credibility, simplifies ownership transfer, and provides growth opportunities while requiring compliance with specific regulations.

Free Consultation