There is no impediment to an employee's right to resign union membership at any time. However, notwithstanding any other provision of law to the contrary regarding authorization and deduction of dues or other payments to a labor organization, the exclusive representative and an educational employee may agree to reasonable limits on the right of the employee to revoke such authorization, including a period of irrevocability that exceeds one year. An authorization that is irrevocable for one year, which may be automatically renewed for successive annual periods in accordance with the terms of the authorization, and that contains at least an annual 10-day period of time during which the educational employee may revoke the authorization, shall be deemed reasonable. This Section shall apply to all claims that allege that an educational employer or employee organization has improperly deducted or collected dues from an employee without regard to whether the claims or the facts upon which they are based occurred before, on, or after December 20, 2019 (the effective date of Public Act 101-620) and shall apply retroactively to the maximum extent permitted by law.
Nothing in this subsection prevents an employee from continuing to authorize payroll deductions when no longer represented by the exclusive representative that would receive those deductions.
Should the individual educational employee who has signed a dues deduction authorization card either be removed from an educational employer's payroll or otherwise placed on any type of involuntary or voluntary leave of absence, whether paid or unpaid, the employee's dues deduction shall be continued upon that employee's return to the payroll in a bargaining unit position represented by the same exclusive representative or restoration to active duty from such a leave of absence.
115 ILCS 5/11.1