N.C. Gen. Stat. § 55B-8: Rendition of professional services.

A professional service corporation may render professional services only through its officers, employees and agents who are duly licensed to render such professional services; provided, however, this provision shall not be interpreted to include in the term "employee," as used herein, clerks, secretaries, bookkeepers, technicians and other assistants who are not considered by law to be rendering professional services to the public. (1969, c. 718, s. 8.)