(a) The Department, for any occupation, shall have the power to make and revise or rescind such regulations, including the definition of terms, as it may deem necessary or appropriate to preserve or safeguard the minimum wage rate under this chapter, except that prior thereto the Department shall hold public hearing upon reasonable notice at which any person may be heard and shall consult with the members of an advisory board representing the interests of employers, employees and the public in equal numbers totaling not more than 9 in all. The members of the board shall serve at the pleasure of the Department and may be paid by it as compensation for their services a reasonable per diem, in accordance with such regulations as it may prescribe, for each day on which they attend a meeting of the board or for each day they spend in the work of the board and may in addition be reimbursed for their necessary and reasonable traveling expenses. Such regulations may include, but are not limited to:
(b) The Department shall have the power to make and revise or rescind such regulations as it may deem necessary or appropriate to administer or enforce this chapter, and such regulations shall, except as may be otherwise provided by the Department, take effect upon publication.