Article L8221-7 of the French Labour Code
Any person who publishes, disseminates or causes to be disseminated by any means an offer of service or sale or an advertisement intended to make his professional activity known to the public must: 1° When subject to compliance with the formalities mentioned in Articles L. 8221-3 and L. 8221-5: a) To mention an identification number provided for by decree in the Conseil d’Etat or, for a company in the process…