820 ILCS 305/4a-8

(a) The Board on behalf of the Commission shall have the right and obligation to obtain reimbursement from an insolvent self-insurer for compensation obligations in the amount of the insolvent self-insurer's workers' compensation and occupational disease obligations assumed by the Board on behalf of the Commission and paid from the Fund by the Commission as directed by the Board, including but not limited to claims for all benefits and reasonable administrative and legal costs. Any such amounts obtained pursuant to this subsection shall be deposited by the Commission into the Fund. The amount of the claims for reimbursements of reasonable administrative and legal costs shall be subject to the approval of the Chairman. (b) The Board on behalf of the Commission shall have the right and obligation to obtain from the security deposit of any insolvent self-insurer, its excess insurance carrier and from any other guarantor the amount of the insolvent self-insurer's workers' compensation and occupational disease obligations assumed by the Board on behalf of the Commission and paid from the Fund by the Commission as directed by the Board, including reasonable administrative and legal costs. Any such amounts obtained pursuant to this subsection shall be deposited by the Commission into the Fund. Reimbursement of reasonable administrative and legal costs shall be subject to the approval of the Chairman. The Board on behalf of the Commission shall be a party in interest in any action or proceeding to obtain the security deposit of an insolvent self-insurer for the payment of its compensation obligations, and in any action or proceeding under the insolvent self-insurer's excess insurance policy and in any other action or proceeding to enforce an agreement of any security deposit, excess insurance carrier and from any other guarantor to satisfy such obligations. (Source: P.A. 84-1097.)