The americans with disabilities act (ada) of 1990 forbids employers from refusing employment or a promotion to someone with a psychological disorder when the person's condition does not prevent performance of the job's essential functions, it is a federal law that gives protection of civil rights to individuals with disabilities. The ADA guarantees equal employment opportunity to disabled people, in public housing, transportation, and housing, has given the mandate that any entity open to the public must be accessible to people with disabilities, , discrimination in housing is strictly prohibited, ADA regulates many situations of people with disabilities, and helps them to be always included in the system and society.