S.C. Code Ann. § 8-11-17

In conformance with the authorization for use of alternative scheduling strategies for employees of state agencies and institutions pursuant to Section 8-11-15, a state agency or institution specifically may use flexible scheduling of the minimum full-time workweek hours for an employee, including hours before eight-thirty a.m. and after five p.m., so long as the implementation of flex-time does not impair the ability of the agency or institution to meet its needs and service delivery requirements.