DocDraft Logo

Missouri Non-Disclosure Agreement Requirements

That statutory presumption has real limits: RSMo Section 431.202 and Section 431.204 both expressly decline to affect the validity of an ordinary covenant not to compete, which Missouri courts still evaluate under common-law reasonableness rather than either statute's presumption of enforceability.

Introduction

That statutory presumption has real limits: RSMo Section 431.202 and Section 431.204 both expressly decline to affect the validity of an ordinary covenant not to compete, which Missouri courts still evaluate under common-law reasonableness rather than either statute's presumption of enforceability. Within the lane the statutes do cover, since 2001 RSMo Section 431.202 has presumed a written employer-employee covenant enforceable, including one protecting confidential or trade secret business information, if it runs no more than one year, and in 2023 Senate Bill 103 added Section 431.204, extending a similar presumption to non-solicitation covenants between a business entity and an owner. Rather than voiding an overbroad covenant outright the way California's Section 16600.5 does, a Missouri court presented with an unreasonable covenant is required to modify it and enforce it as narrowed. A Missouri NDA is otherwise an ordinary, enforceable confidentiality contract, mutual or one-way, protecting trade secrets and other sensitive information shared between parties. Trade secrets themselves are protected separately under the Missouri Uniform Trade Secrets Act (RSMo Sections 417.450 to 417.467), and a misappropriation claim generally must be filed within five years of when the misappropriation was discovered or reasonably should have been, two years longer than California's three-year window. The practical effect for drafting is that a Missouri NDA combined with non-solicitation language protecting confidential information already has statutory footing, provided its duration and scope stay within what the statutes presume reasonable.

0/5000

Key Things to Know

  1. 1

    Trade secret protection runs through the Missouri Uniform Trade Secrets Act (RSMo Sections 417.450 to 417.467), separate from whatever the NDA itself says.

  2. 2

    Since 2001, RSMo Section 431.202 conclusively presumes a written employer-employee covenant enforceable, including one that protects confidential or trade secret business information, if its post-employment duration is no more than one year. In 2023, Senate Bill 103 added RSMo Section 431.204, extending a similar presumption to non-solicitation covenants between a business entity and an owner (two years for employee or owner non-solicitation, five years for customer non-solicitation), and requires a court to modify, not void, an overbroad covenant.

  3. 3

    Missouri has no general statute setting the enforceability standard for a traditional covenant not to compete itself; both 431.202 and 431.204 expressly decline to affect the validity of ordinary non-compete covenants, which remain governed by common-law reasonableness. A separate bill limiting physician non-compete agreements, the Missouri Rural Doctors Act (House Bill 2979), did not pass before the 2026 legislative session ended, so Missouri has no enacted physician-specific non-compete statute.

  4. 4

    A trade secret misappropriation claim in Missouri generally must be filed within five years of when the misappropriation was discovered or reasonably should have been discovered (RSMo Section 417.461), two years longer than California's three-year period, and a continuing misappropriation counts as a single claim rather than restarting the clock with each new use or disclosure.

  5. 5

    Missouri has no employee invention-assignment carve-out statute comparable to California's Labor Code Section 2870. If a Missouri NDA or employment agreement asks someone to assign inventions to the employer, ownership of an invention made on the employee's own time is governed by the agreement's own terms and common-law principles rather than a statutory exception.

  6. 6

    Mutual NDAs, where both sides share confidential information, and one-way NDAs, where only one side does, are both ordinary enforceable contracts in Missouri; which one fits depends on whether the exchange runs both directions, like a partnership or acquisition discussion, or one direction, like pitching an investor.

  7. 7

    A Missouri court can order injunctive relief to stop an ongoing or threatened breach of a valid NDA, in addition to any damages the disclosure caused.

Key decisions before you file

Before you file a Non-Disclosure Agreement in Missouri, a few decisions shape the document: which option to choose and what each one means. The Non-Disclosure Agreement guide walks through them.

Open the Non-Disclosure Agreement guide

Customize your Non-Disclosure Agreement Template with DocDraft

MISSOURI NON-DISCLOSURE AGREEMENT

[Party A Name] of [City], Missouri and [Party B Name] of [City], Missouri (each a "Party") enter into this Non-Disclosure Agreement as follows.

  1. Purpose. Working toward [state the reason for this Agreement, e.g. a possible deal between the Parties] may call for one Party to hand the other Confidential Information neither wants made public.

  2. Definition of Confidential Information. Business, technical, or financial information that a Party marks confidential, or that a reasonable person would understand from the circumstances of disclosure to be confidential, counts as "Confidential Information" here, including any trade secret meeting the Missouri Uniform Trade Secrets Act's definition (RSMo Section 417.453(4)): information deriving independent economic value from not being generally known or readily ascertainable, and kept secret through reasonable efforts. Information the receiving Party can show it already possessed before disclosure is excluded, as is anything it develops on its own without referencing what was shared. So is information a third party passes along without owing anyone a confidentiality duty, and so is information that later becomes public through no fault of the receiving Party.

  3. Obligations. The receiving Party will use Confidential Information solely for the purpose described in Section 1, guard it with reasonable care, and share it only with employees, agents, or advisors who genuinely need it for that purpose and are themselves bound to confidentiality terms at least as protective as this Agreement. Anyone else requires the disclosing Party's prior written consent.

  4. Scope Limitation (Missouri-Specific). RSMo Section 431.202 has, since 2001, conclusively presumed a written employer-employee covenant reasonable, including one protecting "confidential or trade secret business information" under subdivision (3)(a), provided it runs no more than one year after employment ends. Effective August 28, 2023, Senate Bill 103 added RSMo Section 431.204, extending a comparable presumption to covenants between a business entity and an owner: up to two years for non-solicitation of employees or owners, five years for non-solicitation of customers the owner actually dealt with. Unlike a state that voids an overbroad restriction outright, a Missouri court facing a covenant exceeding these bounds must modify and enforce the narrowed version under Section 431.204(4). This Agreement caps any non-solicitation or confidentiality-protective covenant bundled into it at those statutory windows, and a court finding any part broader narrows rather than strikes it, consistent with this state's approach.

  5. Federal Whistleblower Notice. Under 18 U.S.C. Section 1833(b), part of the federal Defend Trade Secrets Act, nobody faces criminal or civil liability for sharing a trade secret in confidence with a government official or an attorney solely to report a suspected legal violation, or for disclosing one in a sealed court filing. Leaving this notice out would cost the disclosing Party access to the Act's full remedies, which is why it appears here.

  6. Term. Confidentiality duties under this Agreement continue for [X years] after signing. Information meeting the statutory definition of a trade secret stays protected for as long as it qualifies as one, regardless of that stated term.

  7. Return or Destruction. The receiving Party's copies of Confidential Information get returned or destroyed, with destruction certified in writing, as soon as the disclosing Party asks or the Section 1 purpose has run its course, whichever comes first.

  8. Remedies. RSMo Section 417.455 lets a court enjoin actual or threatened misappropriation, so the non-breaching Party may seek that relief on top of damages, which RSMo Section 417.457 allows to be measured by actual loss, unjust enrichment, or a reasonable royalty, plus punitive damages for outrageous misappropriation.

  9. Governing Law. Rather than a single governing-law statute, Missouri courts weigh a contract's connections to the state under the "most significant relationship" test, and given that this Agreement is formed and performed here, the Parties agree Missouri law governs its interpretation and enforcement.

  10. Miscellaneous. Signing electronically satisfies this Agreement's signature requirement, a validity both the Missouri Uniform Electronic Transactions Act (RSMo Section 432.200 et seq.) and the federal ESIGN Act (15 U.S.C. Section 7001) confirm. If a single provision turns out unenforceable in court, the rest of this Agreement keeps binding the Parties regardless. Each Party's promises to the other serve as this Agreement's consideration, and a trade secret misappropriation claim arising from it must be brought within five years of discovery under RSMo Section 417.461, two years longer than the window many other states allow.

[Party A Signature] ____________________ Date: __________ [Party B Signature] ____________________ Date: __________

Missouri Requirements for Non-Disclosure Agreement

Definition of Confidential Information (Missouri Rev. Stat. Section 417.450 et seq., Missouri Uniform Trade Secrets Act)

Clearly defines what constitutes confidential information under Missouri law, including trade secrets as defined in the Missouri Uniform Trade Secrets Act (Section 417.453).

Federal Trade Secret Protection (18 U.S.C. Section 1836, Defend Trade Secrets Act)

Incorporates protections under the federal Defend Trade Secrets Act, which provides federal jurisdiction and remedies, including injunctive relief and damages, for trade secret misappropriation.

Exclusions from Confidential Information (Missouri Rev. Stat. Section 417.453(4)(a), Missouri Uniform Trade Secrets Act)

Section 417.453(4)(a) excludes from the statutory definition of trade secret any information that is generally known to, or readily ascertainable by proper means by, other persons who could obtain value from it. This supports the NDA's public-information exclusion specifically, not the full set of standard NDA exclusion categories, such as prior knowledge, independent development, or third-party disclosure, which rest on ordinary contract drafting practice rather than a distinct statutory source.

Obligations of Receiving Party (Missouri Rev. Stat. Section 417.453(4)(b), Missouri Uniform Trade Secrets Act)

Section 417.453(4)(b) makes efforts that are reasonable under the circumstances to maintain secrecy part of what qualifies information as a trade secret in the first place, a condition that falls on the information's owner, not a freestanding statutory duty imposed on an NDA's receiving party. The receiving party's contractual duty of reasonable care in this Agreement is what keeps disclosed trade secrets within that statutory protection, rather than being separately required by this subsection.

Remedies and Injunctive Relief (Missouri Rev. Stat. Section 417.455, Missouri Uniform Trade Secrets Act)

Specifies available remedies for breach, including injunctive relief for actual or threatened misappropriation, consistent with Missouri's trade secrets act.

Whistleblower Protections (18 U.S.C. Section 1833(b), Defend Trade Secrets Act)

Includes the required notice that an individual may not be held liable for disclosing a trade secret in confidence to a government official or attorney to report a suspected violation of law, or in a sealed court filing, as required to preserve the disclosing party's remedies under the Defend Trade Secrets Act.

Restrictive Covenant Enforceability (Missouri Rev. Stat. Section 431.202 and Section 431.204)

Section 431.202 conclusively presumes a written employer-employee covenant enforceable, including one protecting confidential or trade secret business information, if its post-employment duration is no more than one year. Section 431.204, effective August 28, 2023, extends a similar presumption to non-solicitation covenants between a business entity and an owner (two years for employee or owner non-solicitation, five years for customer non-solicitation), and requires a court to modify rather than void an overbroad covenant, giving any non-solicitation language paired with this NDA's confidentiality terms firm statutory footing.

Electronic Signatures (Missouri Rev. Stat. Section 432.200 through 432.295, Missouri Uniform Electronic Transactions Act, and 15 U.S.C. Section 7001, Electronic Signatures in Global and National Commerce Act)

Acknowledges the validity of electronic signatures under both Missouri and federal law.

Disclosure Required by Law (Missouri Supreme Court Rule 56.01)

Rule 56.01 is Missouri's general civil discovery rule, and its protective-order provisions let a party seek terms protecting trade secrets or confidential research, development, or commercial information from unrestricted disclosure in litigation. It governs the discovery process generally rather than creating a freestanding notice-to-the-disclosing-party requirement; the NDA's own procedure for responding to a subpoena or court order is a contractual term that operates alongside, not from, this rule.

Modification (Missouri Rev. Stat. Section 432.010, Statute of Frauds)

Section 432.010 requires an agreement not to be performed within one year to be in writing and signed by the party to be charged. Missouri courts have extended that requirement to material modifications of a contract that itself falls within the statute, which supports requiring written, signed modifications here, though this is judicial application of the statute's writing requirement rather than a provision that addresses modification by its own terms.

Waiver (Missouri Common Law on Waiver of Contractual Rights)

Clarifies that failure to enforce any provision does not constitute a waiver of future enforcement, consistent with Missouri common-law principles governing waiver of contractual rights.

Compliance with Economic Espionage Act (18 U.S.C. Sections 1831 through 1839, Economic Espionage Act)

Acknowledges federal criminal penalties for theft of trade secrets, including imprisonment and fines, providing additional deterrence against misappropriation.

Reasonable Restrictions (Missouri Rev. Stat. Section 416.031, and Section 431.202/431.204)

Section 416.031 is Missouri's general antitrust restraint-of-trade prohibition, which Section 431.202 and Section 431.204 create defined exceptions to for confidentiality-protective and non-solicitation covenants meeting their duration presumptions (one year under 431.202; two or five years under 431.204). Citing 416.031 alone states the general rule restrictions must not violate without the specific presumption structure that actually determines whether this NDA's non-solicitation language, if any, is reasonable in scope and duration under current Missouri law.

Frequently Asked Questions

A Non-Disclosure Agreement in Missouri is an ordinary contract in which one or both parties agree to keep specified information confidential. It can be mutual, where both sides share confidential information, or one-way, where only one side does. Trade secrets shared under the agreement are also separately protected by the Missouri Uniform Trade Secrets Act (RSMo Sections 417.450 to 417.467) regardless of what the NDA itself says.

It can, and Missouri gives that kind of clause firmer statutory footing than many states. RSMo Section 431.202 conclusively presumes a written employer-employee covenant enforceable, including one protecting confidential or trade secret business information, if it lasts no more than one year. RSMo Section 431.204, added in 2023, extends a similar presumption to non-solicitation covenants between a business entity and an owner. Neither statute governs a traditional covenant not to compete, which is still evaluated under Missouri's common-law reasonableness standard, and if a covenant is overbroad, a Missouri court modifies it rather than voiding it outright.

Senate Bill 103, effective August 28, 2023, added RSMo Section 431.204. It presumes a covenant between a business entity and an owner enforceable and not a restraint of trade if it limits non-solicitation of the entity's employees or owners to two years, or non-solicitation of customers the owner dealt with to five years, and it requires a court to modify an overbroad covenant rather than void it. It can matter for an NDA used in a business sale or ownership change where confidentiality terms are paired with non-solicitation language.

A trade secret misappropriation claim under the Missouri Uniform Trade Secrets Act generally must be brought within five years after the misappropriation is discovered, or after it reasonably should have been discovered with reasonable diligence (RSMo Section 417.461), two years longer than California's three-year period. A separate breach-of-contract claim over the NDA itself follows Missouri's ordinary written-contract limitations period.

Missouri has no statute like California's Labor Code Section 2870 that automatically excludes an employee's own-time inventions from an assignment clause. Whether a Missouri NDA or employment agreement can reach an invention an employee developed on their own time depends on the contract's own terms and common-law principles, not a statutory carve-out, so the actual language of the assignment clause matters more in Missouri than in states with such a statute.

It depends on whether confidential information will flow in both directions or only one. A mutual NDA fits a two-way exchange, such as a merger, partnership, or joint-venture discussion where both sides disclose sensitive information. A one-way NDA fits a one-directional exchange, such as pitching a business plan to a Missouri investor who is not sharing anything confidential back. Both forms are equally enforceable in Missouri; the choice is about which structure matches the actual relationship.

No. A Missouri NDA is an ordinary contract, not a formal instrument like a will or power of attorney, so it does not require notarization or witnesses to be valid. It only needs the standard elements of a valid contract: an offer, acceptance, and consideration, along with signatures from the parties being bound.

The non-breaching party can seek injunctive relief to stop an ongoing or threatened disclosure, along with damages caused by the breach. If the disclosed information also qualifies as a trade secret, the Missouri Uniform Trade Secrets Act provides an additional, independent basis for relief, including damages for actual loss and unjust enrichment, and punitive damages if the misappropriation was outrageous, separate from whatever remedies the NDA itself specifies.