For workplace issues and concerns About.com has a comprehensive list of resources and information. To read more and to understand how ADD/HD is protected under the American’s with Disabilities Act go here: http://add.about.com/od/addadhdintheworkplace/a/ada.htm
Legal Rights: Higher Education and the Workplace. Goes into detail about the Rehabilitation Act of 1973 (RA) and the American’s with Disabilities Act of 1990 (ADA).
This link is for if you believe you have been discriminated against by an employer, labor union or employment agency when applying for a job or while on the job because of your race, color, sex, religion, national origin, age, or disability, or believe that you have been discriminated against because of opposing a prohibited practice or participating in an equal employment opportunity matter, you may file a charge of discrimination with the U.S. Equal Employment Opportunity Commission (EEOC).
This link is about Federal Jobs Prohibiting Job Discrimination (questions and answers)