It leaves one classless?

• Bunking off work
• Regular failure to turn up for work
• Habitual absence from work

WordNet Word definitions in WordNet
n. habitual absence from work

Wiktionary Word definitions in Wiktionary
n. 1 The state of being absent, especially frequently or without good reason; the practice of an absentee. (First attested in the early 19 th century.) (R:SOED5: page=9) 2 The practice of absenting one's self from the country or district where one's estate ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1829, from absentee + -ism ; originally in reference to landlords, especially in Ireland ( absentee in this sense is in Johnson's dictionary); reference to pupils or workers is from 1922.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Absenteeism \Ab`sen*tee"ism\, 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.

Wikipedia Word definitions in Wikipedia
Absenteeism is a habitual pattern of absence from a duty or obligation . Traditionally, absenteeism has been viewed as an indicator of poor individual performance, as well as a breach of an implicit contract between employee and employer; it was seen as ...

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ He said those benefits include higher productivity, lower turnover, less absenteeism and stronger loyalty from the workforce. ▪ However, employers are probably the main beneficiaries of any reduction in absenteeism . ▪ In the ...