Recording Law for Employers & Businesses in Missouri

Missouri’s wiretap statute treats wire/electronic communications differently from in-person oral communications. For wire communications—such as phone calls, video calls, and text messages—Missouri provides a one-party-consent exception for private citizens. Section 542.402.2(3) explicitly allows a person who is part of a wire communication to intercept it without the other party’s consent: "For a person not acting under law to intercept a wire communication where such person is a party to the communication or where one of the parties to the communication has given prior consent to such interception unless such communication is intercepted for the purpose of committing any criminal or tortious act." This means if you are part of an electronic conversation, you can legally record it without telling the other person. The statute does not require you to announce or get permission before recording as long as you are part of the conversation.

For in-person conversations, Missouri’s wiretap law is more limited. Section 542.402.1(2) criminalizes using a device to intercept an oral communication only "when such device transmits communications by radio or interferes with the transmission of such communication." This means ordinary local-storage recorders—such as standard smartglasses or wearable audio/video devices—are not covered by the prohibition. So, using a standard recorder to capture an in-person conversation where you are present is not clearly prohibited by Missouri’s wiretap law, even without consent. The private-citizen one-party-consent exception in § 542.402.2(3) applies only to wire communications, not oral communications, and there is no counterpart exception for private citizens recording oral communications.

If your recording has no audio—just video—Missouri’s wiretap statute does not apply at all. The law defines "intercept" as the "aural acquisition" of a communication, meaning it only covers audio. A silent video of a customer dispute, a workplace incident, or a public interaction is not restricted by § 542.402. However, Missouri has a separate law against invasion of privacy, § 565.252, which prohibits photographing or filming another person’s nudity or under clothing without consent in a place where there is a reasonable expectation of privacy. This is a narrow voyeurism law and would not stop you from filming a public argument or a confrontation where no nudity is involved.

Missouri’s wiretap law protects oral communications where someone has a reasonable expectation that the communication is not subject to interception. The statute defines an "oral communication" as "any communication uttered by a person exhibiting an expectation that such communication is not subject to interception under circumstances justifying such expectation." This two-part subjective-expectation-plus-objective-reasonableness test means areas like bathrooms, private offices, break rooms, and similar spaces are protected, because people in those settings expect privacy. Even in a home, Missouri law does not create a special exemption—§ 542.400 expressly includes "interception by one spouse of another spouse" as a prohibited act, confirming the law applies fully within the home. So, avoid recording in areas where people expect privacy, but this gate applies only to oral communications, not wire/electronic communications.

Recording on-duty police in public is not criminalized by Missouri’s wiretap law. However, Missouri is within the Eighth Circuit, which has not clearly established a First Amendment right to actively record police for qualified-immunity purposes. In Chestnut v. Wallace, 947 F.3d 1085 (8th Cir. 2020), the Eighth Circuit recognized a right to passively observe police, but in Molina v. City of St. Louis (Molina v. Book), 59 F.4th 334 (8th Cir. 2023), cert. denied 2024, it held that the right to actively record was not "clearly established" as of 2015, so officers who interfere with recording may still be shielded by qualified immunity. This means recording police could lead to confrontation or interference claims, even if it’s legal under state wiretap law. If an officer tells you to stop recording, it’s safer to pause or comply to avoid escalation.

If you illegally intercept a wire communication under § 542.402.1, you commit a class E felony. All four prongs of § 542.402.1 are class E felonies: intercepting wire communications, intercepting oral communications using a radio-transmitting or interfering device, using or disclosing intercepted communications, and manufacturing/intercepting with intent to sell. There is also a private right of action under § 542.418: anyone whose communication was intercepted can sue for $100 per day or $10,000 (whichever is higher), plus actual damages, punitive damages, and attorney’s fees. For invasion of privacy under § 565.252, filming nudity or under clothing without consent in a place where there is a reasonable expectation of privacy is a class A misdemeanor, and distributing such recordings or having multiple victims can make it a class E felony. While these penalties are serious, they only apply if your recording violates the specific narrow prohibitions in the statutes—not for ordinary one-party recordings.

Imagine a retail employee wearing smartglasses equipped with a camera and audio recorder. A customer becomes aggressive and raises their voice during a return dispute. The employee keeps the glasses on and records the interaction to document the incident for management. Under Missouri law, this is likely legal because the employee is part of the conversation and is using a standard recorder, not a radio-transmitting device. The recording is in a public-facing area of the store, so there’s no reasonable expectation of privacy under § 542.400(8). If the customer later claims the recording was illegal, the employee’s use of the glasses falls outside the wiretap law’s prohibitions. However, if the employee had recorded in a back office or bathroom, or used a hidden radio bug, the analysis would be different.

Missouri’s Supreme Court Advisory Committee (Office of Legal Ethics Counsel) issued Formal Opinion 123 on March 8, 2006, adopting the ABA’s permissive approach to attorney recording. The opinion states that an attorney may record a conversation to which the attorney is a party without notifying the other parties, provided the recording is legal under Missouri’s wiretap statute and the attorney does not engage in independent deceit about the fact of recording. The opinion expressly conditions this permission on three points: (1) legality—an attorney may not record if the act would be illegal under Missouri’s one-party-consent wiretap statute; (2) no independent deceit—an attorney may not lie about whether they are recording; and (3) current-client carve-out—if the conversation is with a current client, the attorney must give some notice that recording is happening or may happen, tied to Rule 4-1.4’s client-communication requirement. In short, undisclosed recording of a nonclient conversation is not itself unethical in Missouri, but a Missouri lawyer must give some notice to their own current client that recording is occurring or may occur.

Missouri currently has no enacted biometric privacy statute applicable to private entities. The state’s only biometric-specific law, § 302.170, restricts the Department of Revenue’s use of biometric data—including voice data—in driver’s-license production and creates a private right of action limited to state actors, not private companies. Three consecutive legislative sessions have seen BIPA-style bills introduced that would have imposed written-notice, written-release, retention/destruction, and anti-sale requirements on private entities and created a private right of action: SB554 (2025), HB500 (2025), and HB1970 (2026). All three died in committee without enactment. If enacted, such a law would directly regulate voice-enrollment features and attach a private right of action to violations. Until then, Missouri law imposes no Missouri-specific written-consent, notice, or retention/destruction mandate on private companies collecting voiceprints. Businesses should monitor these bills and consider adopting best practices such as transparency and consent policies.