There is hereby created and made part of the division of occupational and professional licenses a public works contractors license board. It shall be the responsibility and duty of the administrator of the division of occupational and professional licenses to administer and enforce the provisions of this chapter and to serve as secretary to the board. The board shall be composed of eight (8) members, who shall be appointed by the governor. One (1) member of the board shall be a person whose primary business is that of a "heavy construction" contractor, one (1) member shall be a person whose primary business is that of a "highway construction" contractor, one (1) member shall be a person whose primary business is that of a "building construction" contractor, one (1) member shall be a person whose primary business is that of a "specialty construction" contractor, as such construction terms are defined in this chapter, one (1) member shall be a subcontractor with a license no higher than a class "A," one (1) member shall be a "construction manager," one (1) member shall be a registered professional engineer, and one (1) member shall be a member of the general public with an interest in the rights of consumers of public works contracting services. All contractor members of the board shall be contractors holding a current unrevoked license at the time of their appointment, actively engaged in the contracting business and have been so engaged for a period of not less than five (5) years preceding the date of their appointment, and who shall so continue in the contracting business during their term of office. Each member of the board next preceding his appointment shall have been a citizen and resident of the state of Idaho for at least five (5) years. The governor shall appoint a member to said board for a term of three (3) years, and no member shall be appointed to more than two (2) consecutive terms. All members shall serve at the pleasure of the governor. Each member shall hold office after the expiration of their own term until their successor has been duly appointed and qualified. Vacancies on the board for any cause shall be filled by appointment by the governor for the balance of the unexpired term. Each member of the board shall receive a certificate of appointment from the governor and, before entering upon the discharge of his duties, shall file with the secretary of state the constitutional oath of office.