Cass. soc., June 3, 2026: any dismissal based, even in part, on pregnancy is void. A single mention in the termination letter is enough to cancel it, regardless of the other grievances.
By a judgment of June 3, 2026, the social chamber of the Court of Cassation judges that any dismissal based, even partially, on the state of pregnancy is void. A new rule, with direct consequences for employers and their HR departments.
The judgment rendered on June 3, 2026 by the social chamber of the Court of Cassation (no. 24-22.719, published in the Bulletin) settles a question that it had never had to know: when a letter of dismissal cites several grievances and one of them relates, directly or indirectly, to the employee’s pregnancy, is this reason alone sufficient to bring down the entire termination? The answer is now unambiguous: yes.
A chemist, dangerous products and a deadly pregnancy
The facts are worth recalling, because they do not spontaneously plead in favor of the employee. R&D project manager in a synthetic chemistry small business, the person concerned held a position exposing her to substances classified as likely to harm fertility or the fetus. Pregnant since June 2020, she only informed her employer at the end of October, almost four months later, even though she had in the meantime handled contraindicated compounds.
The employer dismissed her for serious misconduct. The letter articulated three criticisms, the second of which directly targeted the concealment of the pregnancy: the employee was accused of having “deliberately refused to take care” of her health and that of her fetus, thereby exposing the company to civil or even criminal liability.
The Dijon Court of Appeal validated this reasoning. To rule out the nullity, she made a subtle distinction: it was not the pregnancy that was sanctioned, but the sole fact of not having declared it, a breach of the obligation of loyalty since the position presented a risk. The construction was skillful. She is now condemned.
Declaring your pregnancy: an option, never an obligation
The starting point of the Court’s reasoning is a principle that employers too often lose sight of. Under the terms of article L. 1225-2 of the labor code, the employee is never required to reveal her pregnancy. She freely chooses the moment of the announcement. The only consequence of silence is that she cannot, as long as she has not said anything, claim the benefit of the protective measures attached to her status (job adjustment, statutory protection against termination).
No time limit applies to him, and the employer is even prohibited from seeking this information (art. L. 1225-1). The rule is rooted in the right to respect for private life and has long been enshrined by the Court of Justice: a worker cannot be dismissed because of her pregnancy, even if she has not informed her employer (CJCE, October 4, 2001, Tele Danmark).
The “contaminating pattern” gains ground in pregnancy
From this principle, the Court draws a logical but hitherto unprecedented consequence in the matter. To criticize an employee for not having declared her pregnancy is necessarily to blame her for her pregnancy itself: the omission is inseparable from the state. It is therefore impossible to qualify it as a fault “not linked to the state of pregnancy” within the meaning of article L. 1225-4.
The social chamber then establishes a general rule: any dismissal pronounced due, even in part, to the state of pregnancy is void, because it infringes the principle of equal rights between men and women guaranteed by the Preamble to the 1946 Constitution. This is the application, for the first time to the field of pregnancy, of the so-called “contaminating reason” theory, already retained for freedom of expression, the exercise of the right to strike or private life: as soon as a illicit motive appears in the letter, it is sufficient to result in nullity, without there being any need to examine the other grievances.
The scope is all the greater here as the protection is based on particularly solid constitutional and European foundations. The Court closes any possibility of “proportionality control” which would allow other valid grievances to compensate for the discriminatory reason: nullity, the only truly dissuasive sanction, is required.
What employers should remember
The practical consequences are considerable and call for immediate vigilance.
Firstly, any mention of pregnancy, the fetus, a declaration considered late or the employer’s responsibility linked to the employee’s condition must disappear from the dismissal letters. A reference, even marginal, even formulated from the angle of a reproach of loyalty, is enough to destroy the rupture, regardless of the solidity of the other grievances. Internal models must be reviewed in this sense.
Secondly, the financial stakes are high. Nullity gives right to reinstatement and, in the event of a request to this effect, to the payment of full salaries over the entire period of eviction, without deduction of replacement income received in the meantime (Soc., Jan. 29, 2020, no. 18-21.862). In the absence of reinstatement, the compensation cannot be less than six months’ salary.
Thirdly, when faced with a position exposing people to risks, the employer has one lawful tool, and only one: the obligation of preventive information on the dangers of the position for all women likely to be pregnant (art. R. 4412-89), coupled with recourse to the occupational physician, whose adjustment recommendations are imposed without the pregnancy having to be revealed. Anticipate through prevention, never sanction a posteriori: this is the line that the Court of Cassation now draws.
The case is referred to the Besançon Court of Appeal, which may, if necessary, take other grievances into account to adjust the amount of compensation but without being able to call into question the nullity of the dismissal.
Sources and references
- Court of Cassation, ch. soc., June 3, 2026, no. 24-22.719, ECLI:FR:CCASS:2026:SO00497 (published in the Bulletin) — decision commented: courdecassation.fr
- Labor Code, articles L.1225-2, L.1225-4 And L.1225-1 (Legifrance)
- Le Bouard Avocats — Labor law: lebouard-avocats.fr
- Preamble to the Constitution of October 27, 1946, paragraph 3: constitutional-consultation.fr
- Labor Code, article R.4412-89 — preventive information on the risks of the position (Légifrance)
- ECJ, October 4, 2001, Tele Danmark, aff. C-109/00: EUR-Lex
- Court of Cassation, ch. soc., January 29, 2020, no. 18-21.862 — reinstatement and remuneration without deduction of replacement income: Legifrance
- Court of Cassation, ch. soc., October 19, 2022, no. 21-15.533 — modulation of compensation with regard to other grievances: Legifrance
