A reduction of the compensation payable to an employee for occupational hearing loss shall not be made because the employee's ability to communicate may be improved by the use of a hearing aid. An employer who is liable for occupational hearing loss of an employee is required to provide the employee with a hearing aid for each affected ear unless it will not materially improve the employee's ability to communicate.
Iowa Code § 85B.12
98 Acts, ch 1160, §10