(a) Each state agency shall enter into an interagency contract with the office under Chapter 771, Government Code, to pay the costs incurred by the office in administering this chapter for the benefit of that state agency.
(b) Costs payable under the contract include the cost of:
(1) services of office employees;
(2) materials; and
(3) equipment, including computer hardware and software.
(c) The costs of risk management services provided by a state agency under the interagency contract shall be allocated in the same proportion and determined in the same manner as the costs of workers' compensation.