(a) A regular full-time employee of a private business entity who is engaged in erecting, constructing, enlarging, altering, repairing, rehabilitating, or maintaining an improvement to real property in accordance with plans or specifications that have an engineer's seal is exempt from this chapter.
(b) This exemption includes the use of a job title or personnel classification by the employee if the employee does not use the title or classification in connection with an offer to the public to perform engineering services.