Companies establish drug and alcohol ploicies. If you are represented by a union contact your union representative.Unions typically address this issue in their contract negotiations. Companies establish a range of different policies. They range from a second chance policy. This typically involves the employee seeking a substance abuse evaluation and complying with the recommendations. The next possibility is a suspension usually from 30-60 days which also involves a substance abuse evaluation. The final policy is termination with no possibilty to be rehired. The bottom line is if a company feels that individual is a valued employee they will work to find a way to continue employment.For additional information contact Robert W Harelson PsyD,SAP @ http://www.dot-substanceabuseevaluations.com.