Illinois Statutes Chapter 5. General Provisions § 365/9. Termination of authorization

(1) termination of employment or termination of payment of an annuity, as the case may be;

(2) written notice by the employee or annuitant of cancellation of such former authorization, except that an authorization to withhold for the payment of optional contributions to a retirement system through an employer pickup is irrevocable;

(3) expiration of the time during which such withholding was authorized;

(4) when the total amount authorized to be withheld has been so withheld.

Upon termination of authorization to purchase United States Savings Bonds, any amount withheld from the salary or wages of an employee for such purpose and which has not been so used shall be immediately remitted by each Office to the person from whose salary or wages such amount was withheld.