Non-Compete Agreements in Missouri: Are They Enforceable?

Federal law does not regulate non-compete agreements directly. The Federal Trade Commission (FTC) has proposed rules restricting non-compete clauses, but these rules have faced legal challenges and do not yet apply nationwide with uniform enforceability. The proposed FTC rule would ban most non-competes for workers earning below certain thresholds and limit non-competes for others, but as of now, non-compete enforceability remains primarily a matter of state law.

At the federal level, non-competes are analyzed under general contract law principles and may implicate antitrust concerns if they substantially restrict commerce or competition. Federal courts, when hearing cases involving non-competes in diversity jurisdiction, apply the non-compete law of the state whose law governs the employment agreement. There is no federal minimum standard, and employers cannot rely on federal law alone to enforce a non-compete; they must meet the state-specific requirements of the state whose law applies to the employment relationship.

Missouri Revised Statutes § 431.065 governs the enforceability of non-compete agreements and other restrictive covenants. Missouri's law is moderately employer-friendly but requires strict compliance with a three-part reasonableness test, making it neither as permissive as some states nor as restrictive as states like California or North Dakota that ban non-competes outright.

Under § 431.065, a non-compete is enforceable only if it: (1) protects a legitimate business interest of the employer, such as trade secrets, confidential business information, or substantial relationships with prospective or existing customers; (2) is reasonable in temporal, geographic, and occupational scope; and (3) does not impose undue hardship on the employee or harm the public interest. Missouri courts do not require separate consideration beyond continued employment if the non-compete is signed at the time of hire, but they do require it if the non-compete is imposed after employment has begun.

Missouri's two-year limitation is a meaningful constraint: any non-compete exceeding two years is presumed unreasonable unless the employer establishes exceptional circumstances. Geographic scope must be limited to areas where the employer actually conducts or has concrete plans to conduct business. Occupational scope must be limited to the employer's actual line of business or activities closely related to it. Unlike federal law, which does not address non-competes, Missouri state law imposes this explicit durational cap and requires courts to balance employer protection against employee mobility rights.

Employers covered include any entity with a legitimate business interest, regardless of size. There is no employee count threshold or industry carve-out in Missouri law. However, some Missouri courts have suggested that non-competes may be disfavored when applied to lower-wage employees, though this principle is not statutory.

Remedies available to an employer who successfully enforces a non-compete include injunctive relief (a court order barring the employee from competing) and monetary damages for breach. Employees challenging an overbroad non-compete may seek reformation—a court may modify the agreement to make it reasonable rather than striking it entirely, though the trend in recent Missouri decisions is to enforce agreements as written or void them, not to reform them.

Missouri law provides several important exceptions and limitations to non-compete enforceability. Non-competes that extend beyond two years are presumed unreasonable unless the employer presents exceptional circumstances justifying a longer period; this is a significant hurdle and rarely successful in practice. Overbroad geographic restrictions—such as restricting an employee from working in counties or states where the employer has no actual business presence—render the non-compete unenforceable. Similarly, occupational scope limitations that extend to fields unrelated to the employer's actual business or the employee's role are struck down.

Missouri recognizes an at-will employment exception: an employer cannot enforce a non-compete against an employee if the employer terminates the employee without cause, though this principle is not codified and remains subject to case-by-case interpretation. Some Missouri courts have held that if an employer fires an employee without good reason, the non-compete may not be enforced because the employee did not breach the employment relationship. Additionally, non-competes that impose undue hardship—such as rendering an employee unable to earn a living in their profession—may be voided. Courts consider factors like the employee's specialized skills, the availability of alternative employment, and whether the restriction is necessary to protect the employer's legitimate interests.

Minority shareholders and independent contractors may receive different treatment. Missouri courts have suggested more lenient enforcement for non-competes involving minority shareholders because shareholder agreements are evaluated under different reasonableness standards than employee non-competes. Public policy exceptions apply: a non-compete that harms public health or safety (for example, by preventing a healthcare worker from serving a region) may not be enforced despite nominal compliance with the two-year rule. Non-competes that violate antitrust principles or constitute tortious interference with prospective business relations may also be unenforceable on public policy grounds.

Step 1: Document Everything. Retain a copy of the signed non-compete agreement with the date of execution and any modifications. Keep records of your duties, client relationships, trade secrets you accessed, and confidential information you learned. Document the geographic territory where the employer actually operated, the occupational scope of your role, and the business purpose of the non-compete. Take screenshots of the employee handbook, any email communications about restrictions, and the employment offer letter if it referenced a non-compete. Document your salary, job title, and length of employment, as courts may consider these factors when assessing whether the non-compete is reasonable or imposes undue hardship.

Step 2: Assess Internal Options and Seek Employer Consent. Review the non-compete carefully to understand its specific restrictions: duration, geography, occupational scope, and any carve-outs or exceptions. Consider whether the new position you wish to accept actually violates the agreement or merely appears to. Contact your former employer's legal or human resources department in writing, explaining your new role and requesting a written release, modification, or waiver of the non-compete. Some employers will consent to modifications or agree that the new position does not breach the agreement. Obtain any such consent in writing. If the employer is unresponsive or refuses, do not assume the non-compete is unenforceable; proceed to Step 3.

Step 3: File a Declaratory Judgment Action or Consult Counsel Before Breaching. Do not simply begin competing and wait for the employer to sue; this exposes you to injunctive relief and damages. Instead, consult a Missouri employment attorney who can advise whether the non-compete is likely unenforceable based on the reasonableness test (excessive duration, overbroad geography, unreasonable occupational scope). If your attorney believes the agreement is challengeable, you may file a declaratory judgment action in Missouri state court asking the court to find the non-compete unenforceable before you accept the new position. This shifts the burden to the employer and gives you judicial clarity. File in the circuit court (state trial court) of the county where you worked or where the employer is located. Provide the court with the signed agreement, evidence of the employer's actual business scope, your job duties, and arguments that the restrictions are unreasonable. Include the court filing fee (typically $200–$300) and serve the former employer with a copy of the complaint.

Step 4: Expect the Employer's Response and Discovery. If you file a declaratory judgment action, the former employer will likely file an answer and may counterclaim for breach or seek a preliminary injunction to stop you from competing immediately. The court may grant a temporary restraining order (TRO) lasting 14 days while the case proceeds, or a preliminary injunction preventing competition until trial if the employer shows likelihood of success and irreparable harm. Participate in discovery: respond to written interrogatories, requests for production of documents, and depositions under oath. The employer will ask for documents proving you had access to trade secrets, details of clients you serviced, and evidence of any solicitation of customers post-termination. Provide truthful, complete answers; withholding discoverable materials can result in sanctions or adverse inferences. Discovery typically lasts 3–6 months in non-compete cases.

Step 5: Prepare for Motion Practice and Trial. Before trial, file a motion for summary judgment if the law clearly favors you (for example, if the non-compete exceeds two years with no exceptional circumstances or if it restricts competition in geographic areas where the employer never operated). The employer may file a competing summary judgment motion. The court will rule on these motions within 60–120 days. If neither party wins on summary judgment, the case proceeds to trial before a judge (non-compete cases are typically decided by bench trial, not jury). At trial, present evidence that the non-compete is unreasonable, including testimony from industry experts if necessary, evidence of the employer's actual business scope, and argument that the restrictions cause you undue hardship. The judge will issue a written decision within 30–60 days of trial. If you prevail, the non-compete is declared unenforceable and you are free to compete. If you lose, you may appeal to the Missouri Court of Appeals within 30 days of judgment.

Step 6: Consult an Attorney and Evaluate Your Options. Before accepting a position that may violate a non-compete, hire a Missouri employment law attorney to review the agreement. Expect attorney fees of $2,000–$5,000 for a review and initial strategy consultation, or $10,000–$50,000+ for a full declaratory judgment action depending on complexity. If the non-compete appears unenforceable, your attorney may advise you to accept the new position and monitor for litigation. If enforcement seems likely, your attorney may negotiate a settlement or modification with the employer. Some attorneys work on contingency for employees bringing declaratory judgment actions, though this is less common. Do not delay; once you breach, the employer's damages claim accrues and the statute of limitations for a breach of contract claim begins running (typically four years in Missouri).