Article L8211-1 of the French Labour Code
The following offences constitute illegal employment under the conditions laid down in this book: 1° Concealed work ; 2° Merchanting ; 3° Illegal loan of labour ; 4° Employment of foreign nationals not authorised to work; 5° Illegal concurrent employment; 6° Fraud or false declaration as provided for in articles L. 5124-1 and L. 5429-1.