French Labour Law

Challenging a URSSAF Reassessment Before the Judicial Court (Social Division): Deadlines, Jurisdiction, Strategy

Written by DAIRIA Law's AI. Published before 2 October 2026, when claim-by-claim checking against official sources by a second, independent AI was introduced: this article has not been checked that way. DAIRIA Avocats takes editorial responsibility.

DAIRIA Law · Published · 3 min

Challenging a URSSAF Reassessment Before the Judicial Court (Social Division): Deadlines, Jurisdiction, Strategy

Before the judicial court (tribunal judiciaire), the first battle is not the merits: it is the deadlines and jurisdiction. File out of time or before the wrong court, and the reassessment becomes final without any argument on the merits ever being examined. From an insider’s perspective, here is how to secure the litigation.

This article is part of the file URSSAF Inspection: The Employer’s Guide. Previous step: the CRA.

The right court: the designated judicial court, social division

Social security collection litigation falls within the jurisdiction of the specially designated judicial court, social division (pôle social) (Articles L.142-1 and L.142-4 of the French Social Security Code) — not the commercial court (tribunal de commerce) nor the labour court (conseil de prud’hommes).

DAIRIA tip: always verify the competent judicial court. Filing before the wrong court results in inadmissibility and causes a loss of valuable time — sometimes the deadline itself.

The deadline: 2 months, on pain of foreclosure

The claim must be filed within a 2-month period from the notification of the CRA (amicable appeals board) decision (Article R.142-18 of the French Social Security Code), or from the implicit decision of rejection.

At each stage, the obligation to comply with deadlines applies on pain of foreclosure (forclusion — being time-barred): vigilance over deadlines is the cardinal rule. Keep proof of every filing and every notification date (Articles R.142-10 et seq. of the French Social Security Code).

Two filing scenarios

  • Scenario 1 (preferred): filing after an (explicit or implicit) CRA decision, within 2 months.
  • Scenario 2 (fallback): where the deadline on the implicit decision has lapsed, use a late explicit decision as a new document to reopen the deadline and adapt the pleadings.

Leveraging the burden of proof

DAIRIA strategy: leverage the burden of proof. Where URSSAF raises an exception (concealed employment — travail dissimulé) or issues a reassessment, it is for URSSAF to establish it. Produce clear tables contrasting URSSAF’s calculation with the actual figures: a reassessment based on a flat-rate method or a poorly substantiated extrapolation is vulnerable.

Pitfalls to avoid before the judicial court

  • filing before the wrong court;
  • letting the 2-month deadline lapse;
  • challenging only part of the reassessment without stating this clearly;
  • neglecting the schedule of exhibits (bordereau de pièces).

Beyond the judicial court, appeals continue before the Court of Appeal, then the Court of Cassation.

Frequently asked questions

What is the deadline after the CRA? 2 months (Article R.142-18 of the French Social Security Code), on pain of foreclosure.

Which court? The designated judicial court, social division (Article L.142-4 of the French Social Security Code).

Who bears the burden of proof? URSSAF must establish and give reasons for the reassessment.


Written and supervised by Guillemette Watine, attorney, former URSSAF litigation inspector, head of the URSSAF practice at DAIRIA Avocats.

See also → Reducing surcharges and penalties · Negotiating with URSSAF

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Sofiane Coly’s letter. He is a lawyer and the founder of DAIRIA Avocats. The letter is in French: French employment law and payroll, explained for employers, with the sources. Free, and published on Substack.

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