N.J. Stat. § 26:1A-5
There shall be within the department such divisions as the commissioner may, subject to approval by the Public Health Council, from time to time establish. Each division shall be under the supervision of a director, who shall be a person qualified by training and experience to direct the work assigned to it; and two or more divisions may be consolidated by the commissioner. The commissioner may authorize one of the division directors to act for him and in his place, as his deputy during his absence or disability. The commissioner may delegate such of his powers, as he may deem desirable for the efficient administration of the department, to be exercised under his direction and supervision by one or more of the division directors.
Each division director shall devote his entire time and attention to the performance of his duties.
N.J.S. § 26:1A-5