The Illinois Wage Deduction Packet is a document used by employers in the state of Illinois to comply with wage deduction laws. It is required in order for employers to legally withhold certain amounts of wages from their employees' paychecks. There are two types of Illinois Wage Deduction Packets: one for income tax deductions and one for child support deductions. The packet includes all the necessary forms and instructions for employers to properly withhold taxes, child support, and other authorized deductions from employee wages. In addition, the packet also includes information on the different types of deductions allowed under Illinois law. The packet is available for free from the Illinois Department of Employment Security website.