noun, noun or participle which takes 'suru', intransitive verb
Formal term for official duties, especially in government, military, or organizational contexts. Often used in compound phrases like 服務規程 (service regulations) or 服務時間 (duty hours).
公務員は服務規程を守らなければならない。
Public servants must observe the service regulations.
He was reprimanded for making a personal call during duty hours.