Summary of Illinois Prompt Payment requirements and laws for Illinois construction projects including free forms, FAQs, resources and more. Employers shall pay to workers on strike or layoff, no later than the next regular payday, all wages earned up to the time of such strike or layoff.O Check box 1b if you are sending a new. If you've received an invoice, click below to enter the payment portal to quickly and easily pay the unpaid tolls online using the assigned invoice number.