Illinois Consent of a Person aged Fourteen Or Older, is a document which gives consent for a person aged fourteen or older to enter into a legal agreement. This type of consent is often used in medical, educational, financial, and other important decisions. The legal agreement must be in the best interest of the minor and must be approved by a parent or legal guardian. The consent must be signed by the minor and the parent/guardian in the presence of a notary public. There are two types of Illinois Consent of a Person aged Fourteen Or Older: a written consent and an oral consent. The written consent must be in the form of an affidavit or an attestation and must be signed by the minor, the parent/guardian, and the notary public. The oral consent must be given in the presence of two witnesses and must be signed by the minor and the parent/guardian.