If you are on sick leave or maternity leave
If you help a member of your family in his or her work without pay
If you are apprenticed under contract, a paid intern (TUC, SIVP..), etc.

a) Address of your workplace.
Number ____ street or lieudit [a place usually deep in the countryside, with no address but named after its function or by the landmark it is close to] name
____
County: (for Paris, Lyon, and Marseille specify city neighborhood) ____
Department (or country): _ _ ____
b) Name (or corporate name) of the establishment which employs you or which you yourself direct:
____
c) Activity of this establishment:
Be very precise. Examples: wholesale wine business, manufacturing of steel structures, highway transport of passengers, etc.
____
d) Address of this establishment, if it is different from the one declared in question 15a.
____