As opposed to Chojo (full-time working pattern), a part-time and shift working pattern was called Banjo, and officials taking this working pattern were called Bunban (shiftwork).
常勤形態を取る長上に対して、非常勤の交替勤務の形態を番上と呼び、この形態で勤務していた官人を分番と呼んだ。