An exceptional case was when FUJIWARA no Michinaga, who served as Sadaijin and Ichinokami, resigned from the post of Ichinokami by taking the position of Sessho (regent), and he decided that the person who came in to work the earliest on the day would serve as ichinokami for the day among the seven kugyo, who were in the position between Udaijin (FUJIWARA no Akimitsu) and Dainagon (article of March 16, 1016, "Shoyuki" (Diary of FUJIWARA no Sanesuke)).
特殊なケースとして左大臣（一上）であった藤原道長が摂政就任によって一上を退く際には右大臣藤原顕光以下大納言以上の7人の公卿のうち、その日最も早く出勤した者がその日の一上職務を行うこととした例（『小右記』長和5年3月16日条）がある。