S.C. Code Ann. § 24-5-390
Workers' Compensation benefits may be provided for reserves by the governing body in the same manner benefits are provided for full-time jailers or detention officers.
For purposes of compensation or benefits arising from duty-related injury or death, reserves must be considered employees of the political entities for which they were appointed and must be included with regular duty jailers or detention officers in the assigned responsibility for prevention, suppression, and control of crime.