If you see more than one of these signs in your employee, there is a chance he or she is using drugs.

-Changes in attendance (i.e.missing work, tardiness)
-Changes in job performance
-Changes in overall attitude or personality
-Sudden outbreaks of anger
-Changes (deterioration) of physical appearance or grooming
-Money or equipment missing from workplace
-Complaints from co-workers or customers about employee's attitude or behavior
-Missing work deadlines
-Shying away from responsibility