noun, noun or participle which takes 'suru', intransitive verb
perfect attendance; full attendance
Refers to attending every scheduled day or event without any absences. Often used in school or workplace contexts.
彼は一年間皆勤した。
He had perfect attendance for a year.
皆勤賞をもらった。
I received a perfect attendance award.
精勤 emphasizes diligent attendance or working hard without absence, while 皆勤 simply means attending every day without absence.
Compound of 皆 (all, everyone) and 勤 (work, attend). The exact historical derivation is uncertain, but the meaning is transparent from its components.