La. Stat. tit. 37 § 12
Subject to such executive direction and control as is vested in the governor by the constitution and by this Chapter, the director has the management of the department and, subject to the provisions of this Chapter, shall exercise all the functions of the department through the department organization in carrying out the provisions of law with respect to such functions, except those functions which are specifically assigned to any board of the department under the provisions of this Chapter.
The record and administrative work, the examining, and the field inspection and enforcement work shall be centralized in the separate divisions provided.
Any act performed by any employee of the department under the authority of the director thereof is an act of the department and of the director.
La. R.S. § 37:12