The Court of Cassation admits clandestine recording as proof in matters of moral harassment, under strict conditions. A major turning point for employees and HR.
Can you record your employer in secret to prove moral harassment?
Yes, but not under all conditions. The Court of Cassation accepts that a clandestine recording can be used as evidence when it is essential to the employee’s defense and proportionate to the aim pursued.
- A recording made without the employer’s knowledge may be admissible before the industrial tribunal.
- This proof must be essential to allow the employee to exercise his right to proof.
- The infringement of the rights of the other party must remain strictly proportionate.
- A professional exchange, relating to professional facts, is more easily accepted than a conversation relating to private life.
- An employee who reports moral harassment cannot be dismissed for this reason, unless bad faith is demonstrated.
Can your employer be registered secretly? The Court of Cassation has just responded
Can an employee record a professional exchange without the knowledge of his employer to prove moral harassment? The answer from the Court of Cassation is now very clear: yes, under certain conditions. In a judgment of June 10, 2026, the social chamber admitted the admissibility of a clandestine recording made during a videoconference interview with an investigator mandated by the company. A decision with serious consequences for HR departments, managers and employees faced with situations of suffering at work.
A Zoom recording made without the investigator’s knowledge
The case begins in February 2021. A subsidiary director denounces acts of moral harassment that she believes she is experiencing from a subordinate, who is also elected to the social and economic committee. The employer reacts by appointing an external firm to conduct an internal investigation.
During an interview conducted by videoconference on Zoom with the investigator, the employee had the content of the conversation noted by a bailiff, without informing her interlocutor. In other words, the exchange is documented without the knowledge of the person mandated by the company.
The investigation report, however, concludes that the facts of moral harassment “do not appear to be proven”. A few months later, the employee was fired. She then took the matter to industrial tribunal and won her case. The case goes back to the Court of Cassation, which validates the analysis of the trial judges.
Clandestine evidence can be admitted before the judge
For a long time, unfair or illicitly obtained evidence was viewed with great suspicion before civil and social courts. But the case law has evolved.
Since the plenary meeting of December 22, 2023, the Court of Cassation has accepted that evidence obtained or produced unfairly may be admissible, subject to strict control. The judge must verify two elements: the proof must be essential to the exercise of the right to proof, and the infringement of the rights of the other party must be proportionate to the aim sought.
In this case, the social chamber applies this reasoning to the moral harassment dispute. She considers that the clandestine recording could be produced in court, because it was necessary for the employee’s defense.
Why the Court of Cassation validates the registration
Two elements were decisive.
First, the employer completely contested the reality of the harassment complained of. In this context, the recording allowed the employee to demonstrate her good faith and to place the facts in their professional environment. The proof was therefore not only useful, it was indispensable.
Then, the recorded conversation focused exclusively on professional matters. It was part of an internal investigation carried out by the employer and did not affect the private lives of the people concerned. The harm resulting from the recording was therefore considered proportionate.
The decision does not mean that any employee can freely register their employer, manager or colleagues. It means that, in a dispute where proof is difficult to provide, particularly in matters of moral harassment, the judge can admit clandestine evidence if it constitutes the only serious means of defending one’s rights.
Reporting moral harassment protects the employee
The other major contribution of the judgment concerns the dismissal occurred after the report.
In labor law, an employee who reports acts of moral harassment benefits from specific protection. He cannot be sanctioned or dismissed for reporting such facts, except in bad faith. And bad faith cannot be presumed.
It does not result from the simple fact that the harassment is not ultimately recognized. Nor does it result from an internal investigation concluding that there was no proven harassment. To characterize bad faith, it must be demonstrated that the employee knew that the facts reported were false.
In this case, the investigation report itself noted managerial difficulties, in particular a lack of sanction in the face of certain behaviors of verbal violence and insubordination. The employee could therefore legitimately believe that she was the victim of moral harassment. His report was not false.
A serious alert for employers
This decision sends a strong signal to businesses. HR interviews, internal investigation meetings, managerial discussions or sensitive videoconferences can no longer be approached as legally neutral spaces.
Any remarks made in a professional context can, in certain circumstances, be included in the legal debate, even if they were recorded without the knowledge of the interlocutor. Employers must therefore be extra careful in conducting internal investigations, drafting reports and managing disciplinary consequences.
The temptation to dismiss an employee shortly after a report of moral harassment also exposes the company to a significant risk. If the dismissal letter refers, directly or indirectly, to the denunciation, the termination can be canceled.
A decision that changes the culture of proof in business
The judgment of June 10, 2026 confirms a fundamental trend: labor law is entering a new culture of proof. Oral exchanges, videoconferences, informal interviews and internal investigations can now become decisive evidence before the judge.
For employees, this decision serves as a reminder that a report of moral harassment should not be dismissed simply because it is difficult to prove. For employers, it requires much more rigorous management of internal alerts.
The issue is no longer just whether harassment has been established. It is also to know how the company reacted, how it investigated, and whether it took the risk of sanctioning the person who dared to speak out.
FAQ: clandestine recording, moral harassment and dismissal
Can an employee register his employer without notifying him?
Yes, such a recording can be admitted in court, but only under conditions. The judge checks in particular whether this proof was essential to the employee’s defense and whether the infringement of the rights of the employer or registered persons remains proportionate.
Is a clandestine recording always admissible before the industrial tribunal?
No. Admissibility is never automatic. The judge carries out a review on a case-by-case basis. If the recording concerns private life, if it is not necessary for the dispute or if there are other less intrusive means of proof, it can be excluded.
Does reporting moral harassment protect against dismissal?
Yes, the employee who reports acts of moral harassment benefits from protection. He cannot be sanctioned or dismissed for this report, unless the employer proves bad faith, that is to say that the employee knew that the facts reported were false.
Is an unfavorable internal investigation enough to prove the employee’s bad faith?
No. The fact that an internal investigation concluded that there was no proven moral harassment is not enough to characterize bad faith. An employee can make a mistake in his assessment without having deliberately lied.
What should HR do after a report of moral harassment?
HR must handle the report with caution, objectivity and traceability. It is essential to carry out a serious investigation, to avoid any measure that could appear as a sanction for reporting, and to ensure that the dismissal letter does not refer, even indirectly, to the employee’s alert.
Sources
- Court of Cassation, Social Chamber, June 10, 2026, No. 24-20.871, judgment relating to the admissibility of a clandestine recording as evidence in a moral harassment dispute:
- https://www.legifrance.gouv.fr/juri/id/JURITEXT000054293571
- La Tribune de l’Hôtellerie, “Moral harassment: why reporting protects and why clandestine recording is now proof”, June 22, 2026:
- https://latribunedelhotellerie.com/registration-insu-emploi-preuve-harcelement-moral-cassation-2026/
- Le Bouard Avocats, “Moral harassment at work: labor law”:
- https://www.avocats-lebouard.fr/news/harcelement-moral-au-travail-droit-du-travail
- Le Bouard Avocats, “Unfair evidence accepted at the industrial tribunal: new case law”:
- https://www.lebouard-avocats.fr/post/preuves-deloyales-acceptees-prudhomme-nouvelle-jurisprudence
- Labor Code, article L. 1152-1 relating to the definition of moral harassment:
- https://www.legifrance.gouv.fr/codes/article_lc/LEGIARTI000006900818
- Labor Code, article L. 1152-2 relating to the protection of employees who have suffered, refused to undergo or reported acts of moral harassment:
- https://www.legifrance.gouv.fr/codes/article_lc/LEGIARTI000006900819
- Labor Code, article L. 1152-3 relating to the nullity of sanctions or dismissals pronounced in disregard of the protections linked to moral harassment:
- https://www.legifrance.gouv.fr/codes/article_lc/LEGIARTI000006900820
- Labor Code, article L. 1154-1 relating to the probationary regime applicable to harassment:
- https://www.legifrance.gouv.fr/codes/article_lc/LEGIARTI000006900849
