Article R7232-16 of the French Labour Code
The declaration by the legal entity or sole trader, referred to in article L. 7232-1-1, is made to the prefect of the département where the legal entity’s main establishment is located or where the sole trader is established. It is sent by electronic means or by registered letter with acknowledgement of receipt by its legal representative. Where the legal entity or sole trader is established outside France, its declaration is…