Mark & Company works with any individual, company or organization requiring a DOT, Non-DOT or DWI/DUI related Substance Abuse evaluation. We specialize in following the most recent guidelines set by all States, Department of Transportation (DOT) and company workplace drug and alcohol policies.Your company may be required to implement or be associated with an organization requiring DOT compliance. Mark & Company can help you learn signs and symptoms of substance abuse in the workplace and how to implement a program, update and maintain your requirements or document performance that will help you to become a more effective employer, manager, or supervisor owner and give you the skills to act with confidence.