What percent of the US workforce has been impaired on the job (due to alcohol or illegal drugs)at least once during the previous year?

Question

Quizplus · Accepted Answer

B)Alcoholism and substance abuse are problems at work. About 15% of the U.S. workforce (just over 19 million workers)"has either been hung over at work, been drinking shortly before showing up to work, or been drinking or impaired while on the job at least once during the previous year."

What Percent of the US Workforce Has Been Impaired on the Job