noun
absentee rate; absence rate
Used in workplace, school, or organizational contexts to refer to the proportion of people absent.
今月の欠勤率は先月より高かった。
This month's absentee rate was higher than last month's.
会社は欠勤率を下げるために新しい制度を導入した。
The company introduced a new system to reduce the absentee rate.
出席率 is the attendance rate, the opposite of 欠勤率.
Compound of 欠勤 (absence from work) + 率 (rate).