37-67-103. Exemptions. The following are exempt from licensure under this chapter:

(1) the practice of any other legally recognized professions or trades;

(2) the mere execution of work by a contractor, as distinguished from its planning or design or the supervision of the construction of work as a lead supervisor or superintendent;

(3) the work of an employee or a subordinate of a person holding a license under this chapter or an employee of a person practicing lawfully under this chapter if the work does not include final engineering or land surveying designs or decisions and is done under the direct supervision of a person holding a license under this chapter or a person practicing lawfully under this chapter;

(4) the practice of professional engineering by licensed architects when the practice is purely incidental to their practice of architecture.