Illinois Waiver of Service, Entry of Appearance and Consent is a document that allows a party to a civil lawsuit to waive their right to be formally served notice of the lawsuit, and instead enter an appearance and consent to the court's jurisdiction. This document is commonly used when a party wishes to avoid the expense and time of having someone serve them with the paperwork, or when the other party is unable to locate them. There are two main types of Illinois Waiver of Service, Entry of Appearance and Consent: voluntary and involuntary. Voluntary waiver is when the party voluntarily waives their right to be served, while an involuntary waiver is when the court allows them to waive their right to be served due to extenuating circumstances.