S.C. Code Ann. § 41-15-510: Employees shall not be discriminated against for filing complaints and instituting proceedings.

No person shall discharge or in any manner discriminate against any employee because such employee has filed any complaint or instituted, or caused to be instituted, any proceeding under or relating to statutes, rules or regulations regarding occupational safety and health, or testified, or is about to testify, in any such proceedings or because of the exercise by such employee on behalf of himself or others of any right afforded by such statutes, rules or regulations.