Contesting an administrative third-party attachment (saisie administrative à tiers détenteur) levied to recover a claim owed to a public health establishment means first bringing a challenge before the administration. The second civil chamber extends that requirement to every possible subject matter of challenge: the formal regularity of the attachment, the obligation to pay, the amount of the debt in light of the payments made, and whether the sum claimed is due. An enforcement judge (juge de l'exécution) seised without that prior claim will declare the challenge inadmissible.
Key points
- A challenge to an administrative third-party attachment concerning a claim owed to a public health establishment must first be addressed to the administration to which the accounting officer conducting the recovery proceedings belongs.
- That mandatory step applies to the formal regularity of the instrument as much as to the obligation to pay, the amount of the debt in light of the payments made and whether the sum claimed is due.
- A debtor asserting that it has already paid does not escape the prior claim: that argument relates to recovery, not to the merits of the claim.
- Without that prior claim, applications to set aside the attachments, to release them, to reduce them and to obtain restitution of the sums collected are declared inadmissible.
- Challenges relating to recovery cannot call into question the merits of the claim, which must be disputed by another route.
Three attachments challenged without a prior claim
The second civil chamber dismisses the appeal to the Cour de cassation (France's highest civil court): the challenge should have been addressed to the administration before any application to the enforcement judge (Civ. 2e, 2 July 2026, No. 23-18.085). A public accounting officer responsible for recovery on behalf of a public health establishment levied three administrative third-party attachments against a commercial company. According to the appeal decision, that company stood in for public-sector employers in paying health establishments for care connected with the work accidents and occupational illnesses of their staff. The company challenged the three attachments before the enforcement judge.
The company argued that the sums claimed had already been paid and that they were not due. The enforcement judge declared inadmissible its applications to set aside the attachments, to release them, to reduce them and to obtain restitution of the sums collected. The decision under appeal (CA Paris, 17 May 2023, No. 22/09759) upheld that finding of inadmissibility, for want of a prior administrative claim.
Before the Cour de cassation, the company argued that a prior claim was required only where the regularity of the enforcement instrument was at stake. The second civil chamber rejects that reading of Article L. 1617-5 of the French General Code of Local Authorities together with Article L. 281 of the French Tax Procedure Code (free translation):
It follows from those provisions read together that a challenge to an administrative third-party attachment issued by the public accounting officer with a view to recovering public claims based on revenue collection orders issued by a public health establishment must be the subject of a challenge addressed to the administration before the enforcement judge is seised, whether the subject matter of the challenge concerns the formal regularity of the attachment, or the obligation to pay, the amount of the debt in light of the payments made or whether it is due.
The lower court judges had characterised the challenges based on payment, on the amount of the debt and on whether it was due as challenges to the regularity of the attachments, and not to the merits of the claim. The Court draws from this the inadmissibility of the applications, "for want of any prior administrative claim brought by [the debtor company]".
How can an administrative third-party attachment be challenged?
The challenge unfolds in two successive stages: a claim addressed to the administration, then, if it is rejected, an application to the enforcement judge. Article L. 281 of the French Tax Procedure Code, cited by the decision, designates as recipient the administration to which the accounting officer conducting the recovery proceedings belongs. That provision reserves to the enforcement judge appeals against administrative decisions concerning the non-tax claims of local authorities, local public bodies and public health establishments.
The subject matter of the challenge changes nothing in that sequence. A debtor producing bank statements to show a payment already made, or arguing that the sum is not due, is on the ground of recovery. It must therefore write to the administration before issuing a writ of summons (assignation). An enforcement judge seised directly will not examine the substance of the dispute: it will find that no prior claim was brought and will declare the applications inadmissible, including the application for restitution of the sums already seized.
One limit stems from the very subject matter of the claim. According to the provision reproduced in the decision, challenges relating to recovery cannot call into question the merits of the claim. A debtor wishing to dispute the very existence of the debt – for example because it takes the view that the loss falls outside its cover – does not come within that route, but within the jurisdiction of the court empowered to assess the claim itself.
What is the scope for claims owed to public hospitals?
The decision under review closes the gap that the appeal sought to open between formal regularity and the obligation to pay. No distinction remains, for administrative third-party attachments issued for the benefit of a public health establishment, between the two categories of challenge listed in Article L. 281 of the French Tax Procedure Code. As the case law stands at 2 July 2026, a prior administrative claim conditions access to the enforcement judge in both cases.
Before the court of appeal, the public accounting officer argued that the case law relied on by the company was no longer applicable following amendments to the legislation. The appeal decision also notes that the letters notifying the attachments expressly stated the need for a prior claim to the public accounting officer where the enforcement instrument was challenged. In practice, those statements in the instrument are the first point of reference for the debtor whose assets have been attached.
Two questions fall outside the scope of the decision under review. The first is which court hears a dispute on the merits of a public claim, which recovery proceedings do not allow to be challenged. The second is the outcome of the dispute on the merits: the decision penalises the absence of a prior step, without ruling on the reality of the payments alleged or on the extent of the cover invoked.
What steps should be taken as soon as an attachment is served?
The timetable for reacting begins as soon as the instrument is received, before any thought is given to the merits of the dispute. The characterisation of the argument – regularity of the instrument, payment already made, amount, whether the sum is due – dispenses with no prior step. The first move is to read the statements in the notification, which indicate the authority to be approached depending on the subject matter of the challenge. The second is to send a written claim to that authority, keeping proof of despatch and of its date.
Compliance with time limits deserves particular attention. According to the appeal decision, the enforcement judge had noted that the court may be seised only within two months of the public accounting officer's reply, or within two months of the expiry of the period allowed for that reply. The provisions reproduced in that decision also confine an action directly challenging the merits of an assessed and liquidated claim to a period of two months from receipt of the enforcement title or, failing that, from the first step taken under that title or from the service of an enforcement instrument.
Points to check before applying to the court
- Identify the issuer of the revenue collection order and check whether it is a public health establishment, a situation that triggers the prior claim requirement.
- Re-read the statements in the notice of attachment, which designate the authority to which the challenge must be addressed depending on its subject matter.
- Address the claim to the administration to which the pursuing accounting officer belongs, before any writ of summons, whatever the argument relied on.
- Document the payments already made and link them to the orders concerned, since that argument relates to recovery.
- Monitor the time limits for applying to the enforcement judge after the public accounting officer's reply or the expiry of the period for reply.
Frequently Asked Questions
Is a prior administrative claim needed if I say I have already paid the sum demanded by a public hospital?
Yes, that step remains mandatory. For an administrative third-party attachment based on a revenue collection order issued by a public health establishment, the decision of 2 July 2026 requires the challenge to be addressed to the administration before any application to the enforcement judge, including where the debtor relies on a payment already made, on the amount of the debt or on the sum not being due. Without that step, the challenge is declared inadmissible.
To whom must a challenge to an administrative third-party attachment be addressed?
The challenge is addressed to the administration to which the public accounting officer conducting the recovery proceedings belongs, according to the provision cited in the decision under review. Where the claim is held by a State public body, one of its public interest groupings or an independent public authority with its own accounting officer, it goes to the relevant authorising officer. Appeals against the administrative decision then fall to the enforcement judge for non-tax claims of public health establishments.
What is the risk for a company that applies directly to the enforcement judge?
It risks having all of its applications declared inadmissible. In the case decided on 2 July 2026, the applications to set aside the attachments, to release them, to reduce them and to obtain restitution of the sums collected were all held inadmissible for want of a prior administrative claim. The judge then examines neither the payments alleged nor whether the sums are due. The costs of the proceedings remain with the debtor that acted without that step.
How should a challenge to a public claim believed to be already settled be organised?
The process starts by identifying precisely what is being challenged, then following the order of steps set out in the document received. In practice it is prudent to write without delay to the designated authority, to keep proof of despatch and of its date, and to link each payment relied on to the corresponding order. Recovery disputes often involve short time limits, which makes a swift reaction decisive.
What evidence is needed to show that a payment was actually made?
In principle, a party claiming to have discharged its debt must prove it. A bank statement on its own may prove insufficient if it does not link the transfer to the invoice or order relied on. Matching the payment reference, its amount, its date and the claim concerned strengthens the case considerably. Keeping transfer advices and written exchanges with the creditor makes that reconstruction easier.