No member of the commission or of any committee established by the commission that may include nonmembers of the commission shall receive a salary. Except for ex officio government members, the members may receive an amount not to exceed reasonable and necessary traveling expenses and meal allowances, as established by the commission, for each day spent in actual attendance at, or in traveling to and from, meetings of the commission or committees of the commission, or on special assignment for the commission, as approved by the commission.