In Paris, as in many cities across France, numerous companies are faced with employees who falsely claim sick leave. This fraud, which is often difficult to prove internally, can be costly for the company. In this context, hiring a corporate private investigator is an effective and legal solution for obtaining admissible evidence. But how does an investigation work? And what steps must be followed to remain within the law while protecting your interests?
Investigating a case of fraudulent sick leave in Paris: How to proceed?

Understanding What Constitutes an Abusive Sick Leave Claim
Abusive sick leave occurs when an employee misuses a doctor’s note for a purpose other than its intended one.
Example: when the employee engages in other work during the period of leave, or uses this time to engage in activities that are incompatible with their reported health condition.
For employers, this is a real challenge: beyond the direct cost, these situations create internal tensions and can harm the workplace environment.
What are the risks for the company?
Abusing sick leave can have serious consequences:
- Financial impact: The employer must continue to pay a portion of the salary, which is sometimes supplemented by Social Security.
- Organizational impact: replacement of the absent employee, increased workload for coworkers.
- Legal implications: Without evidence, the company risks facing challenges if it acts too quickly.
That is why it is essential to gather solid evidence—evidence that is admissible in court—before taking any disciplinary or legal action.
How is an investigation into an employee conducted in Paris?
A private investigator in Paris, licensed by the CNAPS (National Council for Private Security Activities), is authorized to conduct a surveillance investigation in strict compliance with the law. The process generally consists of three steps:
- Situation Analysis: Compilation of information provided by the employer (employment contract, history of absences, background).
- Discreet monitoring: observing an employee during his or her time off to verify that his or her activities are consistent with his or her reported health condition.
- Report, if requested: submission of a detailed report on the investigation.
Hiring a professional ensures that the evidence is admissible in court and prevents the company from making mistakes during surveillance.
Why hire a private investigator in Paris?
The advantage of entrusting this assignment to a licensed private investigator in Paris lies in:
- Discretion: Surveillance operations are conducted without arousing suspicion.
- Legality: The evidence collected is admissible in the competent courts.
- Speed: An investigation can be launched in just a few days.
- Effectiveness: The investigation report provides factual and indisputable evidence.
In Paris, a private investigator also has local knowledge and a network of experts (lawyers, bailiffs, experts) that strengthens the overall strategy.
What results can we expect?
In the event of proven fraud, the company may use the investigation report to:
- initiate disciplinary proceedings (warning, termination),
- appeal the decision to the Social Security medical advisor,
- seek compensation before the labor court.
These measures help protect the company from abuse and send a strong message to all employees.
To conclude this article on abusive sick leave
Dealing with fraudulent sick leave is a challenge for any Parisian business. With the help of a private investigator, it is possible to take swift, legal, and effective action. If you find yourself in such a situation, the Aquila Group offers the services of its licensed investigators to defend your interests and secure your evidence.
Free of charge and without obligation
Ask for a quote
Free of charge and without obligation
Ask for a quote
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