A supervisor asks: motivational implications.
In summary, to hold absenteeism to the lowest practical level: Watch attendance closely, and let your employees know you are watching; keep accurate attendance records, and again let your employees know you do so; talk with and otherwise counsel individual offenders; and apply your organization's policy faithfully, fairly, and consistently.
D000041:Absenteeism; D006268:Health Facilities; D006801:Humans; D009042:Motivation; D010559:Personnel Management / Q000379:methods*; D014481:United States