Dictionary / Vocabulary / 無断欠勤
むだんけっきん
absence from work without permission
彼は無断欠勤した。
He was absent without leave.
校長は彼に無断欠勤の理由をただした。
The principal called him to account for being absent without an excuse.
メアリーが無断欠勤なんて、ありえないよ。きっとあの子の身に何かあったんだよ。
It's completely out of character for Mary to take a day off without permission. She must have had something happen to her.