Article L111-8 of the French Code of civil enforcement procedures
With the exception of proportional recovery or collection fees, which may be partially charged to creditors under conditions laid down by decree of the Conseil d’Etat, the costs of enforcement are to be borne by the debtor, unless it is clear that they were not necessary at the time they were incurred. Disputes are settled by the judge. The costs of collection undertaken without an enforceable title shall be borne…