A notification or report filed with authorities (a variant form of '届け出'); can refer to the act of filing or to doing something by means of a notification.
住所変更は窓口での手続きではなく、市役所への届け出で済みます。
A change of address can be handled by notifying the city office, rather than through a window procedure.
アルバイトの勤務時間変更は書面の届け出で受け付けます。
Changes to part-time work hours are accepted via a written notification.