report of absence (from work); absentee notice
A formal written notice submitted to an employer or school to report an absence, typically in advance or as soon as possible. Often a standardized form.
I submitted a report of absence to my company because I wasn't feeling well.
Please submit your absentee notice by the day before.
遅刻届 is a notice for being late, whereas 欠勤届 is for a full-day absence.
Standard spelling. 欠勤 (absence) + 届 (report/notice).
Variant with okurigana け. Both spellings are used, but 欠勤届 is more common in official contexts.
Compound of 欠勤 (absence from work) + 届 (report, notice). The okurigana variant 欠勤届け reflects the verb 届ける (to deliver, to report).