(a) There is created the position of commissioner of corrections. The commissioner shall be the chief administrative officer of the department. Subject to the general policy established by the board, the commissioner shall supervise, direct, account for, organize, plan, administer, and execute the functions vested in the department by this title.

(b) The commissioner shall be appointed by and shall serve at the pleasure of the board. Beginning July 1, 1999, the salary of the commissioner shall be set by the Governor and the expenses and allowances of the commissioner shall be as set by statute.