With consent of the minor's parent, guardian, or custodian, no specific age limitations or restrictions are imposed for:
- (1) home chores and other work done for parent or guardian;
- (2) any casual work not determined harmful by the division;
- (3) agricultural work including the operation of power-driven farm machinery in the production of agricultural products; or
- (4) work for which a specific, written authorization has been made by the division.