S.C. Code Ann. § 20-7-1220
(A) If a parent is required by a court order to provide health coverage for a child and the parent is eligible for family health coverage through an employer in this State, notice and a copy of the order must be sent to the employer. The notice and copy of the order may be sent by first class mail. The notice must explain all of the employer's legal obligations under this part of Subarticle 6. In cases enforced by the Child Support Enforcement Division of the Department of Social Services, the division shall use the National Medical Support Notice promulgated by the federal Office of Child Support Enforcement. Upon receipt of notice and the order, the employer shall:
(2) if the parent is enrolled but fails to make application to obtain coverage for the child, enroll the child under family coverage upon application of:
(3) continue coverage of the child unless the employer: