The Americans with Disabilities Act (ADA) is a federal law that prohibits discrimination on the basis of disability. Title I of the ADA makes it unlawful for any employer to discriminate in any aspect of employment against a qualified applicant or employee because of a disability. The ADA covers employers with 15 or more employees, including state and local governments.
The U.S. Equal Employment Opportunity Commission has published a guide that explains how the ADA applies to job applicants and employees with intellectual disabilities. The guide covers:
The guide is available for free at
http://www.eeoc.gov/facts/intellectual_disabilities.html