An Illinois Petition for Letters of Administration is a legal document that is used to request the appointment of an administrator for a deceased person’s estate. This petition is typically filed with the probate court when the deceased left no will or there is no designated executor, or when the executor is unable or unwilling to act. A Petition for Letters of Administration grants legal authority to the administrator to manage the estate assets and settle debts. There are two types of Illinois Petition for Letters of Administration: General Letters of Administration, which allows the administrator to manage all the estate assets, and Special Letters of Administration, which authorizes the administrator to manage a specific asset or group of assets.