S.C. Code Ann. § 1-11-730
(A) If a person began employment eligible for coverage under the state health and dental plans on or before May 1, 2008, the following eligibility provisions govern that person's participation in state health and dental plans as a retiree:
(B) If a person began employment eligible for coverage under the state health and dental plans after May 1, 2008, the following eligibility provisions govern that person's participation in state health and dental plans as a retiree:
(3) A retired state employee or a retired employee of a public school district who retires under a state retirement system and who is eligible for state health and dental plan coverage under the provisions of item (1) or (2) of this subsection, is eligible for trust fund paid premiums as follows: