S.C. Code Ann. § 9-1-1540
Upon the application of a member in service or of his employer, a member in service on or after July 1, 1970, who has had five or more years of earned service or a contributing member who is disabled as a result of an injury arising out of and in the course of the performance of his duties regardless of length of membership on or after July 1, 1985, may be retired by the board not less than thirty days and not more than nine months next following the date of filing the application on a disability retirement allowance if the system, after a medical examination of the member, certifies that the member is mentally or physically incapacitated for the further performance of duty, that the incapacity is likely to be permanent, and that the member should be retired. For purposes of this section, a member is considered to be in service on the date the application is filed if the member is not retired and the last day the member was employed by a covered employer in the system occurred not more than ninety days prior to the date of filing.
The South Carolina Retirement System may contract with the Department of Vocational Rehabilitation to evaluate the medical evidence submitted with the disability application relative to the job being performed and make recommendations to the medical board. The system may approve a disability retirement subject to the member participating in vocational rehabilitation with the Department of Vocational Rehabilitation. Upon determination by the department that a member retired on disability is able to reenter the job market and work is available, the retirement system may adjust the benefit paid by the system in accordance with Sections 9-1-1580, 9-1-1590, 9-9-60, and 9-11-90.