Undeclared Work in France: Risks for Employees and Employers

Working without a contract, being paid "under the table" (au black), not declaring all your overtime hours... In France, undeclared work (commonly referred to as travail dissimulé or concealed employment) is a practice severely punished by law. Whether you are an employer looking to reduce your social security contributions or an employee accepting cash to make ends meet, the legal, financial, and social consequences can be catastrophic. This comprehensive guide presents the rules of French law, the sanctions faced by each party, the steps to regularise a situation, and the pitfalls to avoid.

---

What is undeclared work under French law?

Undeclared work is a form of illegal work defined by the Code du travail (French Labour Code). Contrary to popular belief, it does not only concern the total absence of declaring an employee; it encompasses several daily realities of business operations.

Concealment of activity vs. concealment of salaried employment

The Code du travail distinguishes between two main categories of concealed work under Article L. 8221-1:

• *Concealment of activity (dissimulation d'activité - Article L. 8221-3): This concerns an employer or self-employed worker who carries out production, processing, repair, or service provision activities without being registered with the Répertoire des Entreprises (SIRENE - the French business register), the Registre du Commerce et des Sociétés* (RCS - the Trade and Companies Register), or without having made the mandatory tax and social security declarations.
• *Concealment of salaried employment (dissimulation d'emploi salarié - Article L. 8221-5):* This is characterised by an employer intentionally evading the mandatory formalities related to hiring and executing the employment contract.

Legal criteria for concealed work

For an employee's work to be considered concealed, the employer must have voluntarily omitted to complete one of the following formalities:

1. *The Déclaration Préalable à l'Embauche (DPAE - Pre-Employment Declaration): This must be sent to the URSSAF* (the French body responsible for collecting social security contributions) before the employee actually starts work.

2. *The delivery of the payslip (bulletin de paie):* Or mentioning on the payslip a number of working hours lower than those actually performed (concealment of overtime).

3. Social security declarations: Failing to declare the paid wages or the related social security contributions to the collection agencies (URSSAF).

The intentional element (élément intentionnel) is essential to characterise the criminal offence. A simple material error made in good faith does not, in principle, constitute the offence of concealed work, although it must be corrected.

---

Risks and sanctions for the employer

An employer who uses concealed work faces an extremely heavy combination of criminal, civil, administrative, and financial sanctions. Inspections by the Inspection du travail (French Labour Inspectorate) or the URSSAF can lead to a company's bankruptcy.

1. Criminal sanctions

Using concealed work is a criminal offence. According to *Article L. 8224-1 of the Code du travail***, the penalties faced by natural persons (the company director) are:

• A prison sentence of up to 3 years.
• A maximum fine of 45,000 €.

If the offence is committed against multiple people, or vulnerable individuals (for example, foreign nationals without a residence/work permit), the penalties can be increased to 5 years in prison and a 75,000 € fine.

For legal entities (the company as a corporate body), the fine can rise up to 225,000 € (Article L. 8224-5), accompanied by additional penalties such as a ban on exercising the professional activity for a period of 5 years or more, and exclusion from public contracts.

2. Financial sanctions and URSSAF reassessments

The URSSAF systematically carries out a flat-rate or actual reassessment (redressement) of the evaded social security contributions.

• Flat-rate reassessment: If the actual duration of work cannot be established, the URSSAF applies a flat-rate basis equal to 25% of the annual social security ceiling (which is approximately 11,600 € per concerned employee in 2024).
• Reassessment surcharge: The contribution reassessment is automatically increased by 25% to 40% when concealed work is found, and can rise to 60% in the event of a repeat offence or if the violation involves a minor or a vulnerable person.
• Loss of exemptions: The employer retroactively loses the benefit of all social security contribution reductions and exemptions (such as the réduction Fillon - low-wage contribution relief) for all of their employees during the concerned period.

3. Administrative sanctions

The Préfet (the local state representative) can order immediate administrative sanctions:

• The temporary closure of the establishment for a maximum duration of 3 months.
• The reimbursement of public employment subsidies received by the company over the last 12 months.
• Exclusion from public subsidies for a maximum duration of 5 years.

---

Risks and consequences for the employee

Unlike the employer, the employee is generally considered by French case law to be a victim of concealed work. However, accepting to work without being declared carries major risks in the short, medium, and long term.

1. Loss of social protection and pension rights

• No coverage in the event of a workplace accident: If you get injured at your workplace while you are undeclared, the accident will not be covered under occupational accident legislation. You will not receive increased daily sickness benefits (indemnités journalières), and your medical care will not be covered at 100%.
• No unemployment benefits: Hours worked "under the table" do not generate any contributions to France Travail (formerly Pôle Emploi, the French unemployment agency). If the working relationship ends, you will not be eligible for any unemployment benefits for that period.
• Loss of pension quarters: Without a declaration, no salary is recorded on your career history statement (relevé de carrière). You lose precious quarters (trimestres) for your future retirement.

2. Absence of guarantees linked to labour law

Without a written contract or payslips, it is extremely difficult to assert your rights:

• No guarantee of salary payment (the employer can decide overnight to stop paying you).
• Non-compliance with maximum working hours and mandatory rest periods.
• No paid leave (congés payés) or severance pay.
• Instant verbal dismissal, without any legal dismissal procedure.

3. Tax penalties and reimbursement of social benefits

The employee is not immune to sanctions if they knowingly participated in the fraud or combined undeclared income with social security benefits:

• Tax reassessment: The French tax administration (administration fiscale) can recalculate the employee's income tax (Impôt sur le Revenu) for the last 3 years and apply a 40% penalty for deliberate omission, or even 80% in the case of fraudulent maneuvers.
• Reimbursement to the CAF and France Travail: If the employee combined their undeclared work with the RSA (active solidarity income), the prime d'activité (activity bonus), or unemployment benefits, they must repay the entirety of the overpayment (indus) and face prosecution for social benefit fraud.

---

Concrete and numerical examples

To better understand the financial reality of concealed work, let us analyse two typical situations.

Example 1: Reassessment of a restaurant business

The private limited company (SARL) "Le Bon Choix", managed by Pierre, employs a waiter, Marc, for 6 months at 35 hours per week, paid entirely in cash (1,500 € net per month), without any declaration. Following an inspection by the Inspection du travail, the offence is recorded.

• Regularisation of social security contributions by URSSAF: The URSSAF calculates the evaded employer and employee contributions based on the actual gross salary (approximately 2,000 € per month). For 6 months, the amount of contributions due rises to approximately 7,200 €.
• Surcharge for concealed work: A 25% penalty is applied to this amount, which is 1,800 €.
• Flat-rate indemnity for the employee: Marc takes the case to the Conseil de prud'hommes (French labour tribunal). The employer is ordered to pay him a flat-rate termination indemnity equal to 6 months of gross salary (in accordance with *Article L. 8223-1 of the Code du travail), which is 12,000 €*.
• Criminal fine: The criminal court (tribunal correctionnel) sentences Pierre to a personal fine of 5,000 €.

Total cost of the fraud for the employer: 26,000 € (excluding legal fees), for an initial savings on contributions estimated at only a few thousand euros.

Example 2: The case of Sofia, combining undeclared work and unemployment benefits

Sofia receives an unemployment allowance (ARE) of 1,200 € per month. To make ends meet, she agrees to do cleaning work for a cleaning company on an undeclared basis, paid 600 € per month in cash for 10 months.

• Detection of the fraud: The URSSAF inspects the cleaning company and finds Sofia's name on an informal hours log.
• Consequences for Sofia:
• France Travail demands the reimbursement of the unemployment benefits received. Since fully combining benefits and work is not allowed without a declaration, she must repay an overpayment estimated at 6,000 €.
• The tax office reintegrates the 6,000 € of undeclared income into her taxable income, leading to a tax reassessment with a 40% penalty for bad faith.
• Sofia loses her right to her remaining unemployment benefits due to proven fraud.

---

Practical steps: How to regularise the situation?

If you find yourself in an undeclared work situation, it is crucial to act quickly to limit the risks. Here is the step-by-step procedure.

For the employee: How to prove and report concealed work?

1. Gather evidence of the working relationship: Before taking any steps, accumulate as much physical evidence as possible proving that you work for this employer. Admissible evidence includes: professional emails, SMS or WhatsApp messages, timesheets, testimonies from clients or colleagues, photos at the workplace, or regular bank transfers marked "salary" or bearing the manager's name.

2. Send a formal notice to the employer: Send a formal letter via registered mail with acknowledgment of receipt (lettre recommandée avec accusé de réception - LRAR) to your employer, requesting them to regularise your situation (DPAE declaration, provision of payslips, and an employment contract) within a specific timeframe (usually 8 to 15 days).

3. *File a case with the Conseil de prud'hommes (CPH): If the employer refuses, you can bring the case before the CPH via summary proceedings (référé* - a fast-track procedure) or on the merits to request the reclassification of the working relationship, payment of back wages, overtime, and, in the event of termination, the flat-rate indemnity of 6 months' salary.

4. Report the situation to the control authorities: You can send a detailed written report to the Inspection du travail (via the DREETS - regional directorate for economy, employment, labour, and solidarity) and the URSSAF, attaching your evidence.

For the employer: How to regularise an employee?

1. Make a retroactive declaration: Immediately declare the employee to the URSSAF via a corrective DPAE and integrate the past wages into your next Déclarations Sociales Nominatives (DSN - monthly electronic payroll declarations).

2. Issue retroactive payslips: Calculate and pay the corresponding social security contributions.

3. *Use the right to make a mistake (droit à l'erreur), if applicable: If the omission was involuntary and this is your first offence, you can contact the URSSAF* to request an amicable regularisation without late payment penalties, subject to your complete good faith.

---

Pitfalls to avoid

• Believing that a written or verbal agreement between employer and employee protects you from the law: Even if the employee explicitly asked to be paid in cash (for example, to avoid losing their social benefits), this agreement is null and void. The employer remains solely legally responsible for the declaration and will be heavily sanctioned.
• Neglecting the preservation of physical evidence: An employee who wishes to assert their rights in court without any written proof (SMS, emails, bank statements) will see their claim rejected by the Conseil de prud'hommes. The employee's word against the employer's is not enough.
• Thinking that the auto-entrepreneur (self-employed) status protects you from the offence of concealed work: Forcing a worker to register as an auto-entrepreneur to mask an employment relationship (subordination link, imposed hours, provided equipment, single client) is classified as disguised employment (salariat déguisé). This is a heavily sanctioned form of concealed work.
• Waiting for an inspection to act: The longer you wait to regularise a black-market work situation, the more the URSSAF late payment penalties accumulate, sometimes reaching amounts that are impossible for a small business to pay.

---

FAQ (Frequently Asked Questions)

I worked without a contract for 3 months. Can I demand a permanent contract (CDI)?

Yes. Under French law, in the absence of a written employment contract, the working relationship is presumed to be a full-time Permanent Contract (Contrat à Durée Indéterminée - CDI). You can file a case with the Conseil de prud'hommes to have the existence of this CDI recognised and claim all related rights since your first day of actual work.

What is the time limit (statute of limitations) to claim undeclared wages?

The statute of limitations (prescription) for claiming back pay and the payment of overtime before the Conseil de prud'hommes is 3 years from the day the employee knew or should have known the facts. For an action related to the termination of the employment contract, the time limit is generally 12 months.

Can my employer dismiss me verbally if I ask to be declared?

A verbal dismissal is legally considered to be devoid of any real and serious cause (cause réelle et sérieuse) and entitles you to compensation. If your employer dismisses you on the spot because you demand to be declared, you can obtain damages for unfair dismissal before the Conseil de prud'hommes, in addition to the flat-rate indemnity of 6 months' salary for concealed work.

I am a foreigner without a residence/work permit, do I have the same rights in case of undeclared work?

Yes. French labour law protects all employees, including undocumented workers. If you have been subjected to concealed work, you have the right to file a case with the Conseil de prud'hommes to claim your unpaid wages and a flat-rate termination indemnity equal to a minimum of 3 months' salary (*Article L. 8252-2 of the Code du travail**). Furthermore, under certain conditions, this process can support an application for regularisation through work at the Préfecture* (local prefecture).

---

Summary

• Strict definition: Concealed work includes the absence of a pre-employment declaration (DPAE), the absence of payslips, or the concealment of overtime hours.
• Sanctions for the employer: Up to 3 years in prison, a 45,000 € fine for the director (225,000 € for the company), major URSSAF reassessments with the loss of tax exemptions, and administrative closure.
• Risks for the employee: Loss of workplace accident coverage, absence of unemployment and pension rights, and the obligation to repay social benefits (CAF, France Travail) received improperly.
• Flat-rate indemnity: In the event of the termination of an undeclared employment contract, the employee is entitled to an automatic flat-rate indemnity equal to 6 months of gross salary, regardless of their length of service in the company.
• Freedom of proof: The employee can prove the working relationship by any means (SMS, emails, testimonies, bank transfers).

Legal information for guidance only, not personalised legal advice. For your specific situation, ask your question free of charge on AvocatAI — answers based on French law, in your language.