(g) Regular members of a volunteer sheriff's reserve, which may be established by resolution of the county board of supervisors, to assist the sheriff in the performance of the sheriff's official duties. A roster of the current members shall monthly be certified to the clerk of the board of supervisors by the sheriff and shall not exceed the maximum number authorized by the board. Certified members of an authorized volunteer sheriff's reserve shall be deemed to be employees of the county for the purpose of coverage under the Arizona workers' compensation laws and occupational disease disability laws and shall be entitled to receive the benefits of these laws for any compensable injuries or disabling conditions that arise out of and occur in the course of the performance of duties authorized and directed by the sheriff. Compensation benefits and premium payments shall be based upon the salary received by a regular full-time deputy sheriff of the county involved for the first month of regular patrol duty as an officer for each certified member of a volunteer sheriff's reserve. This subdivision shall not be construed to provide compensation coverage for any member of a sheriff's posse who is not a certified member of an authorized volunteer sheriff's reserve except as a participant in a search and rescue mission or a search and rescue training mission.