10 ILCS 5/13-2.5
Any person who is appointed as an election judge under Section 13-1 or 13-2 may, after giving his or her employer at least 20 days' written notice, be absent from his or her place of work for the purpose of serving as an election judge. An employer may not penalize an employee for that absence other than a deduction in salary for the time the employee was absent from his or her place of employment. An employer may not require an employee to use earned vacation time or any form of paid leave time to serve as an election judge.
This Section does not apply to an employer with fewer than 25 employees. An employer with more than 25 employees shall not be required to permit more than 10% of the employees to be absent under this Section on the same election day.
10 ILCS 5/13-2.5