Absenteeism means remaining absent for the work which has been designated to an employee.
If Labour is given the work to paint the wall, he remain absent and the work is pending, the wall might be painted by some one else. The labour here is involving Absenteeism by not attending to paint the wall.
Absent Without Official Leave: A term used in the United States Military to describe a soldier or other military member who has left his or her post without permission (usually in disagreement with a particular order). This is one of many military terms that has trickled down into everyday speech among civilian populations.
Private Johnson went AWOL after he received an order to join major combat forces in Iraq.