The state treasurer shall deposit or, on order of the manager of the industrial special indemnity fund, invest any portion of the industrial special indemnity fund not needed for immediate or currently anticipated use, in the manner and subject to all the provisions of law respecting the depositing and investing of state funds by him. Interest earned by such portion of the fund so invested shall be collected by the state treasurer and placed to the credit of the fund.
Idaho Code § 72-326