Do you know how to find out if you are a beneficiary on a bank account? Learn about Can You Access The Bank Accounts Of Deceased Family Members?With insights from Gierach Law Firm, LLC. Get the resources you need to help navigate someone else's financial affairs. View and download our forms below. The date of the decedent's death was. And I have attached a copy of the death certificate hereto. 4. When a beneficiary passes away, the Pension Authority needs to be informed without delay. They will then discontinue the payments. Under Illinois law and local ordinance, the Medical Examiner is both required and empowered to determine the cause and manner of death.