American Disabilities Act (ADA): The legislation passed in the year 1990 which prohibits discrimination against people with disabilities. Below this Act, discrimination against a disabled person is unlawful in transportation, employment, public accommodations, communications and government actions. The law prohibits state and local governments, employment agencies, private employers and labor unions from discriminating against the disabled. Employers are needed to make reasonable accommodations in order for disabled person to carry out their job function.