The commission shall make such expenditures as may be necessary for the adequate administration of this law, including salaries, other personal services, actual and necessary traveling and other expenses and disbursements of the members of the commission, its officers and employees, incurred while on official business, either within or without the state, office rent, the purchase and rental of vehicles, books, periodicals, office equipment and supplies, printing and binding, cost of membership in official organizations, attendance at meetings and conventions and for all other purposes concerned with subject matters cognizable within this law. All expenditures of the commission, unless otherwise provided in this law, shall be paid out of the industrial administration fund after approval by the board of examiners.