Secretly recording a conversation at work: is it allowed and does it count as evidence?

Can you secretly record a conversation with your boss or colleague to use as evidence later? The short answer is: yes, in principle it is not prohibited to record a conversation in which you yourself are participating, even without the other person's knowledge. However, actually using that recording in a court case is more complex and requires a delicate balancing of interests by the judge.

In employment law, we increasingly see employees or employers reaching for their smartphones to record discussions. The intent is usually to use the recording in a future dispute. Yet the legal path is littered with pitfalls, ranging from criminal penalties to violations of the General Data Protection Regulation (GDPR). Below we guide you through this legal minefield.

1. The recording itself: when is it punishable?

There is a persistent misconception that secretly recording a conversation is always illegal. This is not true, but there is a crucial condition: participation.

Participant vs. third party

The law makes a strict distinction between someone participating in the conversation and an outsider.

• You participate yourself: As long as you yourself are a participant in the conversation (physical, telephone or online), recording it is in principle not prohibited. The other interlocutor does not even have to know about it.
• You are not participating (eavesdropping): If you are not a participant and yet record a conversation (for example, by leaving your phone in a room to eavesdrop on colleagues), you are committing a crime. This is a violation of article 314bis of the Criminal Code.
  • Notice: The penalties are not minus: prison terms of six months to two years and fines of up to 10,000 euros.

Interesting nuance: Does a participant put his phone on speaker so that a colleague can listen in? Then legally that listening-in colleague also becomes a ‘participant’ and is not punishable if he records the conversation.

The GDPR horde

While it may be allowed under criminal law, data protection law (GDPR) presents a second barrier. A person's voice is personal data. Because recordings at work rarely fall under the ‘personal or domestic use’ exception, you must have a legal legal basis for the processing. In a professional context, it is often difficult to find such a legal basis without consent. Thus, a recording may be criminally legal, but may be a violation of the GDPR which can lead to sanctions from the Data Protection Authority.

2. Using the recording as evidence

You have a recording. Can you now just put it on the table in court? There is a paradox here: just because a recording was created illegally (for example, due to a GDPR violation) does not mean it cannot be used as evidence.

Judges apply the so-called ‘Antigone test’ here. Evidence is excluded only if specific, strict conditions are not met (also read our earlier blog).

Condition 1: no fraudulent intent

You may not use the recording with the intention of harming someone or taking an unlawful advantage of them (for example, blackmail, defamation on social media or harassment). However, if you use the recording purely to prove a fact in a dispute (for example, discrimination or an urgent reason for dismissal), this does not fall under this prohibition. Even if you somewhat ‘provoked’ the conversation to uncover the truth, the judge may be lenient if there was no other way to provide the evidence.

Condition 2: recording reliability.

The judge must be certain that the recording is authentic.

• The technology must be conclusive.
• Selective excerpts or transcriptions without the original audio are often distrusted because they can distort the context.
• Recordings in which the other party is framed via manipulative questions may be considered unreliable.

Condition 3: right to a fair trial

The use of the recording must not violate the right of defense. In practice, this is rarely a problem: as long as the opposing party in the proceedings has the opportunity to listen to and challenge the recording, the process is fair.

3. Privacy expectation: office vs. cafeteria

A crucial element in the court's assessment is the reasonable expectation of privacy. Not every conversation at work is equally confidential.

• Low privacy expectation: Conversations that are purely businesslike, in a non-confidential atmosphere (such as in the workplace), enjoy less protection. Indeed, case law sometimes states that the privacy expectation in business conversations between employer and employee is virtually non-existent.
• High privacy expectation: A conversation in a locked office, the restrooms or during a break in the cafeteria has a higher level of privacy than a conversation in the parking lot where anyone can pass by.

The judge will weigh interests: does the right to privacy outweigh the interest in finding the truth? If there are serious facts (such as dismissal for cause) and there is “evidentiary need” (no other evidence available), the evidence will often be admitted.

4. Specific situation: professional secrecy

What about conversations with confidants, prevention advisors (PAPSY) or occupational physicians?

• The professional: They are bound by professional secrecy. They may not record and use the conversation unless strictly necessary for their own defense (for example, in disciplinary proceedings).
• The employee/client: You are not bound by professional secrecy. If you record a conversation with the confidant, you are not violating professional confidentiality. You may use this evidence to defend yourself.

Frequently Asked Questions (FAQ)

Can I record a termination interview?
Yes, as long as you yourself participate in the conversation, this is in principle not punishable. If you later want to use this to challenge a wrongful dismissal, the labor court will likely admit this evidence, especially if you are in evidentiary distress.

What if I put the recording on Facebook?
This is absolutely inadvisable. Distributing a recording via (social) media does not meet reasonable privacy expectations and can be seen as an attempt to harm (Article 314bis Criminal Code). Use the recording only within the legal proceedings.

Does this also apply to video calls (Teams/Zoom)?
Yes, the same principles apply to online conversations. Note, however, that when an employer (e.g., call centers) systematically monitors conversations, specific rules are applicable from the Electronic Communications Act.

Conclusion

Covertly recording a conversation in the workplace is a powerful but risky tool. While the recording itself is often not criminal (provided you are a participant), its admissibility in court depends on how you obtained the evidence and its necessity. The trend in case law in Belgium is that truth-telling often takes precedence over privacy, especially in serious conflicts where there is no other evidence.