also: とどけがき
noun
written report; notification; notice
A formal written document submitted to an authority, such as a government office, to report or notify something.
届け書を市役所に提出した。
I submitted the written notification to the city office.
婚姻届は役所に届け書を出す必要がある。
For a marriage registration, you need to submit a written report to the government office.
Abbreviated kanji spelling; less common but still used in official contexts.
届出 is a more general term for notification or report, often used as a noun or verb (届け出る). 届け書 specifically refers to the written document itself.
申請書 is an application form requesting permission or approval, while 届け書 is a notification document that simply reports facts without necessarily seeking permission.
Compound of 届け (とどけ, 'report, notification', from verb 届ける) + 書 (しょ, 'document'). The alternate reading とどけがき uses the kun'yomi of 書.