S.C. Code Regs. § § 71-507
During an inspection any employee shall be afforded a reasonable opportunity to consult the Safety Specialist in private. In those cases where there is no authorized employee representative, the Safety Specialist shall consult with a reasonable number of employees concerning matters of safety and health in the workplace. In other circumstances, the Safety Specialist may consult with a reasonable number of employees in each workplace and work area concerning matters of occupational safety and health to the extent necessary for the conduct of an effective investigation. Prior to, during or subsequent to any inspection of a workplace, any employee or representative of employees may notify the Commissioner or Safety Specialist of any violation of the laws, rules or regulations which they have reason to believe exists in such workplace.
S.C. Code Regs. § 71-507