Serious misconduct and gross misconduct: definition and consequences

Serious misconduct (faute grave) and gross misconduct (faute lourde) are the two most severe degrees of disciplinary fault under French employment law. Their classification carries major financial consequences for the employee: loss of the notice period, loss of severance pay, and, in the case of gross misconduct, the possibility of civil liability proceedings. These classifications are frequently invoked by employers and equally frequently challenged before the labour tribunal. The Court of Cassation’s case law is both abundant and demanding: a serious or gross misconduct finding that is insufficiently characterised exposes the employer to reclassification as a dismissal without real and serious cause.

1. Serious misconduct and gross misconduct: definitions and distinctions

1.1 – The three degrees of disciplinary fault

The Labour Code does not expressly define the different degrees of disciplinary fault, but the Court of Cassation has clarified their contours through an extensive body of case law. Three levels are distinguished:

Degree of fault Case law definition Principal consequences
Minor misconduct (faute simple) Breach of professional obligations, insufficiently serious to justify immediate departure Entitlement to notice period + entitlement to severance pay
Serious misconduct (faute grave) Breach of such gravity as to make it impossible to keep the employee in the company, even for the duration of the notice period Loss of notice period + loss of severance pay
Gross misconduct (faute lourde) Serious misconduct committed with intent to harm the employer or the company Loss of notice period + loss of severance pay + possible civil liability action

1.2 – A classification without an express statutory definition

Neither serious misconduct nor gross misconduct is defined by a specific statutory provision. It is case law that has built their definitions, through successive decisions of the Court of Cassation. This absence of a statutory definition explains the abundance of litigation: the classification depends on the facts, the circumstances, the context, and the sovereign assessment of the trial judges.

Key point

The burden of proving serious or gross misconduct falls on the employer. The employer must demonstrate that the alleged facts are real, precise, verifiable and sufficiently serious to justify the classification relied upon. In case of doubt, the labour tribunal judge reclassifies as minor misconduct, with the attendant financial consequences for the employer.

2. Serious misconduct: criteria and examples

2.1 – The case law definition of serious misconduct

Serious misconduct is misconduct that makes it impossible to keep the employee in the company during the notice period. It presupposes a breach of professional obligations of particular gravity, which justifies immediate termination of the contract without the employer being able to retain the employee even for the duration of the notice period.

The Court of Cassation systematically verifies two elements:

  • The reality of the facts: the alleged facts must be precisely established
  • Sufficient gravity: the facts must be of such gravity as to justify the employee’s immediate departure

2.2 – Examples of serious misconduct recognised by case law

Case law has recognised the following as constituting serious misconduct, depending on the circumstances:

  • Physical or verbal violence towards colleagues, clients or management
  • Moral or sexual harassment of a subordinate or colleague
  • Theft or misappropriation of property belonging to the company or colleagues
  • Disclosure of professional secrets or confidential data to third parties or competitors
  • Unfair competition engaged in during the performance of the employment contract
  • Serious and established insubordination: repeated refusal to carry out legitimate instructions
  • Abandonment of post without justification or prior authorisation
  • Falsification of documents (expense claims, reports, qualifications)
  • Being under the influence of alcohol in the workplace, particularly in roles involving safety responsibilities
  • Serious breach of a health and safety obligation exposing third parties to danger

Important note: in concreto assessment

The classification of serious misconduct is never automatic. The judges assess the facts in their context: the employee’s length of service, their disciplinary record, the intrinsic gravity of the facts, the harm caused to the company, and any mitigating circumstances. The same set of facts may constitute serious misconduct for an employee with several prior disciplinary sanctions and amount to no more than minor misconduct for an employee with an unblemished record.

2.3 – What does not constitute serious misconduct

Case law has also clarified what is insufficient to characterise serious misconduct:

  • An unintentional professional error or one resulting from an isolated instance of negligence
  • Inadequate results in the absence of clearly established misconduct
  • A disagreement with a line manager without violence or serious insubordination
  • An isolated unjustified absence, without repetition or prior warning
  • A minor breach of an ancillary contractual obligation

3. Gross misconduct: intent to harm as a constitutive element

3.1 – The definition of gross misconduct

Gross misconduct is distinguished from serious misconduct by one additional and decisive element: intent to harm the employer or the company. It is not sufficient that the facts are serious; it must be demonstrated that the employee acted with the deliberate intention of causing harm to the employer.

The Court of Cassation is very strict on this point: the intent to harm must be expressly established and cannot be inferred from the mere gravity of the facts. An employee who commits serious misconduct without intent to harm cannot be dismissed for gross misconduct.

3.2 – Examples of gross misconduct recognised by case law

Gross misconduct is established in situations where the intent to harm is manifest:

  • Deliberate sabotage of production equipment, computer files or company premises
  • Intentional disclosure of trade secrets or strategic data to a competitor, with intent to cause harm
  • Organisation of an unlawful strike with blocking of access and deliberate damage to company property
  • Misappropriation of clientele for the benefit of a competing company set up by the employee during the performance of their contract
  • Threats or acts of violence committed with the manifest intention of causing personal harm to the employer

Important note: gross misconduct is rarely established

The classification of gross misconduct is far more demanding than that of serious misconduct. It is frequently overturned by labour tribunal judges, who reclassify as serious or minor misconduct where intent to harm has not been sufficiently established. Wrongly classifying a dismissal as gross misconduct exposes the employer to additional damages for vexatious conduct.

3.3 – Gross misconduct of striking employees: a specific regime

In the context of the exercise of the right to strike, gross misconduct is subject to a particular regime. Only gross misconduct (and not serious misconduct) may justify the dismissal of a striking employee (Art. L. 2511-1 of the Labour Code). This specific protection of the right to strike means that acts committed during a strike can only be sanctioned if they characterise an intent to harm the employer.

4. Consequences of serious misconduct and gross misconduct

4.1 – Loss of the notice period

In the event of serious or gross misconduct, the employee loses their entitlement to a notice period (Art. L. 1234-1 of the Labour Code). The employer may terminate the contract immediately, without the employee being entitled either to work out their notice or to receive payment in lieu. It is this impossibility of retaining the employee in the company that fundamentally characterises serious misconduct.

4.2 – Loss of severance pay

An employee dismissed for serious or gross misconduct also loses their entitlement to the statutory severance payment (Art. L. 1234-9 of the Labour Code) and to any contractual severance payment provided for by the applicable collective agreement. This loss may represent a significant sum for employees with long service.

4.3 – Retention of entitlement to unemployment benefit

Contrary to a common misconception, an employee dismissed for serious or gross misconduct retains their entitlement to unemployment benefit paid by France Travail, subject to meeting the affiliation conditions. A dismissal for serious or gross misconduct does not result in the loss of unemployment insurance entitlement.

4.4 – The specific feature of gross misconduct: the employee’s civil liability

Gross misconduct has one particular feature not shared by serious misconduct: it may allow the employer to pursue the employee’s personal civil liability for compensation for losses caused to the company (Art. 1240 of the Civil Code). This action remains theoretically available but is rarely pursued in practice, notably due to the limited financial resources of most employees.

Key point: summary of consequences

Serious misconduct: loss of notice period + loss of severance pay + retention of unemployment benefit entitlement. Gross misconduct: same consequences + possibility of a civil liability action. In both cases, accrued paid leave remains due to the employee regardless of the classification.

4.5 – The position of accrued paid leave

Following the Court of Cassation’s ruling of 13 September 2023 and the Act of 22 April 2024, accrued and untaken paid leave remains due to the employee even on dismissal for serious or gross misconduct. The employer is required to pay the corresponding compensatory payment for untaken accrued leave upon termination of the contract.

5. The applicable disciplinary procedure

5.1 – Precautionary suspension

Where facts are liable to constitute serious or gross misconduct, the employer may decide to place the employee on precautionary suspension (mise à pied conservatoire) pending the outcome of the disciplinary procedure. This provisional measure, which suspends the contract without pay, must be immediately followed by the initiation of disciplinary proceedings. If the employer delays, the precautionary suspension may be reclassified as a disciplinary suspension.

5.2 – The invitation to the preliminary meeting

Even in cases of serious or gross misconduct, the employer must comply with the disciplinary dismissal procedure (Art. L. 1332-2 of the Labour Code):

  • Invitation by registered letter or hand delivery, with a minimum notice period of 5 working days before the meeting
  • Statement of the employee’s right to be accompanied
  • Holding of the preliminary meeting
  • Notification of dismissal no earlier than 2 working days after the meeting, and no later than 1 month after

5.3 – The limitation period for alleged misconduct

The employer has 2 months from the date of becoming aware of the facts to initiate disciplinary proceedings (Art. L. 1332-4 of the Labour Code). Once this period has expired, the facts are time-barred and can no longer found a sanction, even if they were constitutive of serious or gross misconduct.

Important note

A dismissal for serious or gross misconduct affected by a procedural irregularity (insufficient notice period, absence of a preliminary meeting, late notification) is not necessarily annulled, but exposes the employer to a compensatory award of up to 1 month’s salary for the procedural irregularity, in addition to any damages for absence of real and serious cause.

6. Challenging a finding of serious or gross misconduct

6.1 – Grounds for challenge

An employee dismissed for serious or gross misconduct has several avenues for challenging that classification before the labour tribunal:

  • Challenging the reality of the facts: the alleged facts did not occur or are inaccurate
  • Challenging the classification: the facts are real but do not characterise serious misconduct (no impossibility of continued employment) or gross misconduct (no intent to harm)
  • Invoking mitigating circumstances: length of service, absence of prior misconduct, provocation, context of harassment
  • Raising a procedural irregularity: insufficient notice, absence of an invitation to a meeting, time-barred facts
  • Invoking a discriminatory motive: where the sanction is connected to the exercise of a fundamental right

6.2 – Time limit for bringing a claim

The employee has 12 months from notification of the dismissal to bring a claim before the labour tribunal (Art. L. 1471-1 of the Labour Code). This deadline is short and requires prompt action following notification of the dismissal.

6.3 – Consequences of reclassification

Where the labour tribunal reclassifies a dismissal for serious or gross misconduct as a dismissal without real and serious cause, the employee may obtain:

  • Payment of the compensatory indemnity in lieu of notice
  • Payment of the severance indemnity (statutory or contractual)
  • Damages for dismissal without real and serious cause, in accordance with the Macron scale
  • In cases of nullity (discrimination, harassment), compensation outside the scale with a minimum floor of 6 months’ salary

7. Frequently asked questions about serious and gross misconduct


Serious misconduct is a breach of such gravity that it makes it impossible to keep the employee in the company during the notice period. Gross misconduct goes further: in addition to the gravity of the facts, it requires a deliberate intention to harm the employer or the company. That intention must be expressly established and cannot be inferred from the mere gravity of the facts. Gross misconduct is far rarer and more difficult to establish than serious misconduct. It alone enables the employer to pursue the employee’s civil liability for the losses caused.


Yes. A dismissal for serious or gross misconduct does not result in the loss of entitlement to unemployment benefit paid by France Travail. Subject to meeting the affiliation conditions (having worked at least 6 months in the preceding 24 months), an employee dismissed for serious or gross misconduct may receive the return-to-employment allowance (ARE). A dismissal for serious or gross misconduct results only in the loss of the notice period and severance pay, not in the loss of unemployment insurance entitlement.


No. Even in cases of serious or gross misconduct, the employer is required to comply with the disciplinary procedure: invitation to a preliminary meeting with a minimum notice period of 5 working days, holding of the meeting, then notification of the dismissal in compliance with the statutory time limits. Failure to hold the preliminary meeting is a procedural irregularity which, while not necessarily undermining the substantive grounds for dismissal, exposes the employer to a compensatory award of up to 1 month’s salary.


Yes, since the Act of 22 April 2024. Following the Court of Cassation’s ruling of 13 September 2023 and the subsequent legislative reform, accrued and untaken paid leave must be compensated upon termination of the contract, including on dismissal for serious or gross misconduct. The employer is therefore required to pay the compensatory indemnity for accrued untaken leave, regardless of the classification of the misconduct.


The employee has 12 months from notification of the dismissal to bring a claim before the Conseil de prud’hommes. They may challenge the reality of the facts, the classification as serious misconduct (by demonstrating that the facts did not make their continued presence in the company impossible), or invoke mitigating circumstances. If successful, reclassification as a dismissal without real and serious cause gives rise to entitlement to the notice indemnity, severance pay and damages. Prior consultation with an employment lawyer allows the prospects of success to be assessed and the necessary evidence to be prepared.

8. Your employment lawyer for serious and gross misconduct matters

The classification of serious or gross misconduct is one of the most consequential in employment law, both for the employee who is subject to it and for the employer who must demonstrate its validity. A classification that is insufficiently characterised systematically rebounds against the employer before the labour tribunal. For the employee, challenging that classification promptly and effectively may allow recovery of the notice indemnity, severance pay and substantial damages.

As specialists in employment law, Patchwork Avocats assists companies in securing their disciplinary procedures and defends employees against unjustified dismissals for serious or gross misconduct, in both advisory work and proceedings before the labour tribunal.

Are you facing a dismissal for serious or gross misconduct, or do you wish to secure a disciplinary procedure? Contact us.

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Article mis à jour le 20 August 2026