1. The rules concerning the contribution collected in respect of the participation of employers in the construction effort are defined in articles L. 313-1, and L. 313-4 to L. 313-6 of the Construction and Housing Code.
2. The rules concerning the contribution collected in respect of the participation of agricultural employers in the construction effort are defined in articles L. 716-2 to L. 716-5 of the French Rural and Maritime Fishing Code.