Absenteeism

[æbs(ə)n'tiːɪz(ə)m] or [,æbsən'tiɪzəm]

(noun.) habitual absence from work.

Typed by Hector--From WordNet

(n.) The state or practice of an absentee; esp. the practice of absenting one's self from the country or district where one's estate is situated.

Checked by Charlie