For purposes of Section 7059, work in other classifications is "incidental and supplemental" to the work for which a specialty contractor is licensed if that work is essential to accomplish the work in which the contractor is classified. A specialty contractor may use subcontractors to complete the incidental and supplemental work, or he may use his own employees to do so.
Cal. Code Regs. Tit. 16, § 831
Note: Authority cited: Sections 7008 and 7059, Business and Professions Code. Reference: Section 7059, Business and Professions Code.