As a supervisor governed by the DOT reasonable suspicion training guidelines, you are naturally going to receive a lot of scrutiny if you ever decide not confront an employee who who may be under the influence for drugs or alcohol on the job.
This portion of the alcoholic progress curve will be insightful. Can you see how the alcohol use in the beginning of the addiction progression can be quite normal. This however is the typical pattern. Reasonable suspicion training with WorkExcel.com covers these normal looking symtpso and how to make them fool you.