Absenteeism (noun)

1. The act of staying away from work or school without good reason or permission.
2. Frequent or habitual absence from work or school.

Origin:

From the french absentéisme, from absenté ("absent") + -isme ("-is.m")

Examples:

1. The company had to deal with high levels of absenteeism among its employees.
2. The absenteeism rate among students in the school was alarmingly high.
3. His absenteeism from the meetings caused delays in the project completion.
4. The union blamed the company's poor management for the high rate of absenteeism.
5. The school implemented a strict policy to reduce absenteeism among students.