S.C. Code Ann. § 40-63-80
The board by regulation may require continuing education of every person licensed under the provisions of this chapter and the payment of an annual license renewal fee. Upon the payment of the fee and the fulfillment of requirements for continuing education, the license of any person licensed under the provisions of this chapter must be renewed by the board.
Any licensee who allows his license to lapse by failing to renew the license as provided in this section may be reinstated by the board upon satisfactory explanation by the licensee of his failure to renew his license and upon payment of a reinstatement fee and the current renewal fee to be determined by regulation promulgated by the board. If a license has lapsed for more than one year, the board may impose further educational requirements for reinstatement.
Any person practicing as a social worker during the time his license has lapsed is an illegal practitioner and is subject to penalties provided for in Section 40-63-50.