Any amounts provided to the employee or surviving spouse as temporary total disability payments, permanent total disability payments, a lump sum settlement award, or other payment under the Workers' Compensation Act or the Workers' Occupational Diseases Act shall be applied as an offset to the disability benefit paid by the Fund, whether duty or ordinary, or any widow compensation or supplemental benefit payable under this Article until a period of time has elapsed when the benefit payable equals the amount of such compensation, payment, or award. The duty disability benefit shall be offset at the rate of the amount of temporary total disability payments or permanent disability payments made under the Workers' Compensation Act or the Workers' Occupational Diseases Act.
If such amounts are not readily determinable or if an employee has not received temporary total disability payments or permanent weekly or monthly payments for the entire period of disability up to the time of the compensation, payment, or award under the Workers' Compensation Act or the Workers' Occupational Diseases Act, the disability benefit paid by the Fund shall be offset by 66 2/3% of the employee's salary on the date of disablement. The offset shall not be greater than the amount of disability benefits due from the Fund. The offset shall be applied until a period of time has elapsed when the benefit payable equals the amount of such compensation, payment, or award. This offset shall not apply to the initial days of disability when workers' compensation would not ordinarily be payable.
The amount of compensation or supplemental annuity payable to a widow shall be offset by any compensation, payment, or award until a period of time has elapsed when the benefit payable equals the amount of such compensation, payment, or award.
If an employee who has been disabled has received ordinary disability from the Fund and also receives any compensation or payment for specific loss, disability, or death under the Workers' Compensation Act or the Workers' Occupational Diseases Act, then the ordinary disability benefit must be repaid to the Fund before any other benefit under this Article may be granted or paid. If no other benefit is applied for, then the ordinary disability is offset according to the provisions of this Section.
The employee and the employer shall provide the Fund, on a timely basis, with the entry of the settlement contract lump sum petition and order settlement of any such lawsuit, including all details of the settlement.
40 ILCS 5/11-158