Some of the most common signs of substance abuse are things that aren’t there -– namely, the employee and the employee’s work ethic.
Unexplained absences and a decline in productivity might indicate an employee has a problem with substance abuse, noted Gordon Hughes, director of the employee assistance program at the U.S. Centers for Disease Control and Prevention (CDC). “The employee is probably missing Mondays or Fridays,” Hughes said. “There’s also a change in productivity. They were a good producer, they worked well, then there’s a sudden change. It may or may not be alcohol, but something is going on, and that’s a warning sign.”
via Don’t Ignore the Signs of Substance Abuse — Occupational Health & Safety.