Submitting a SIPSI declaration may seem straightforward, but many employers make avoidable mistakes that can lead to fines, delays, or on site compliance issues in France. Understanding these common errors in advance helps ensure a smooth posting process and reduces legal risk.
Submitting the Declaration Too Late
One of the most frequent mistakes is submitting the SIPSI declaration after the work has already started in France. French labour law is very strict on timing. The declaration must be completed before the first day of work, not on the same day and not after the worker has arrived on site.
Even if all other information is correct, a late submission is treated as non compliance and can trigger penalties during an inspection.
Providing Incorrect Posting Dates
Incorrect start or end dates are another common issue. Some employers enter estimated dates instead of confirmed ones or forget to update the declaration when the assignment is extended or shortened.
If the worker is present in France outside the declared period, the posting is considered undeclared for those extra days. Always ensure the dates accurately reflect the real working period in France.
Choosing the Wrong Type of Posting
SIPSI requires employers to select the correct posting scenario, such as service provision, intra group posting, or temporary agency work. Selecting the wrong category can raise red flags during an inspection and lead to questions about the legality of the posting.
Each posting type carries specific obligations, so it is essential to assess the situation carefully before submitting the declaration.
Missing or Incorrect Representative in France
In most cases, appointing a representative in France is mandatory. A common mistake is leaving this section incomplete or appointing someone who is not actually available or authorized to act during the posting.
Inspectors expect the representative to respond quickly and provide documents on request. If the representative cannot be reached or lacks the required documents, the employer may still face sanctions.
Incomplete or Inaccurate Worker Information
Errors in worker details such as names, dates of birth, job titles, or nationalities are more serious than many employers realize. These details are often cross checked during inspections.
Each posted worker must be declared individually, and the information must match official identity and employment documents. Copying data from old declarations without verification is a frequent source of mistakes.
Forgetting Social Security Documentation
For postings within the European Union, failing to obtain or keep an A1 certificate is a major compliance gap. Some employers assume that SIPSI alone is sufficient, but SIPSI does not replace social security obligations.
If an inspector requests proof of social security coverage and it is missing, the employer may face financial and administrative consequences.
Ignoring Sector Specific Requirements
Certain sectors, especially construction, have additional obligations beyond SIPSI. A common mistake is assuming that the SIPSI declaration alone covers all requirements.
In construction, for example, posted workers may need a Carte BTP. Failing to complete this separate process can result in fines even if the SIPSI declaration itself is correct.
Not Keeping Proof of the Declaration on Site
After submitting the SIPSI declaration, some employers forget to download or share the receipt with the client or site manager. During inspections, authorities often ask for immediate proof that the declaration was submitted.
If the receipt cannot be produced quickly, it may be treated as if no declaration was made, even if it exists in the system.
Failing to Update the Declaration When Circumstances Change
Changes to the assignment, such as adding new workers, changing work locations, or extending the duration, usually require a new or updated declaration. A common mistake is assuming that one declaration covers all future changes.
Each material change should be reflected accurately in SIPSI to avoid discrepancies during inspections.
Assuming Exemptions Apply Automatically
Some employers incorrectly assume they are exempt from SIPSI obligations without verifying their situation. Exemptions are limited and depend on specific conditions.
Relying on assumptions instead of official guidance can lead to unintentional non compliance and penalties.
Final Thoughts
Most SIPSI related issues arise not from complex legal problems, but from simple administrative oversights. Careful preparation, accurate information, and timely submission are the keys to avoiding problems.
Employers who regularly post workers to France should establish a clear internal checklist or seek professional support to ensure every SIPSI declaration is complete, accurate, and compliant from the start.