absence permission slip
A formal document submitted to a school or workplace to obtain official permission for an absence, often for a legitimate reason such as illness or a family event.
If you submit an absence permission slip, your absence that day will be treated as an excused absence.
Standard kanji form for a formal absence permission slip.
Variant with okurigana け; both forms are used.
Compound of 公欠 (official absence) and 届 (notification, report).