Your employee must complete Form IL-W-4, Employee's Illinois. Withholding Allowance Certificate.Just fill out the secure form or you may make your donation in person at the Pima County JTED District Office. Complete the worksheet on the back of this page to figure the correct number of allowances you are entitled to claim. Give your completed Form IL-W-4 to your. This section focuses on Pay, Taxes, Salaries, and Wages, including self-service applications. Visit Leave and Benefits for more information. Part I contains receipt accounts arranged numerically within each fund group; that is, general, special, and trust. Illinois state income tax withheld from your weekly benefits. Use the following pages to complete your Illinois State and Federal income tax withholding, or W-4 information.