All commission employees provided for in this chapter, and the reasonable and necessary expenses of the administration of the duties imposed on the commission by the Motor Carrier Regulatory Law of 1938, shall be paid out of the appropriations made to defray the expenses of the commission, upon requisitions and warrants in the same manner provided by law for the disbursements of appropriations for the commission. An itemized account shall be kept of all receipts and expenditures and shall be reported to the Legislature by the commission.