S.C. Code Ann. § 33-19-340: Responsibility for professional services.

(a) Each individual who renders professional services as an employee of a domestic or foreign professional corporation is liable for a negligent or wrongful act or omission in which he personally participates to the same extent as if he rendered the services as a sole practitioner. An employee of a domestic or foreign professional corporation is not liable, however, for the conduct of other employees of the corporation unless he is at fault in appointing, supervising, or cooperating with them.

(b) A domestic or foreign professional corporation whose employees perform professional services within the scope of their employment or of their apparent authority to act for the corporation is liable to the same extent as its employees.

(c) Except as otherwise provided by statute, the personal liability of a shareholder of a domestic or foreign professional corporation is no greater in any respect than the liability of a shareholder of a corporation incorporated under the South Carolina Business Corporation Act.