When the planned duration or volume of work on a building or civil engineering project exceeds certain thresholds, the project owner must submit a prior declaration before the work begins:
1° To the administrative authority ;
2° To the professional body for health, safety and working conditions provided for by article L. 4111-6 in the building and public works sector;
3° To the social security bodies responsible for occupational risk prevention.
The text of this declaration, the content of which is specified by ministerial order, is displayed on the worksite.