Anna Does Have a Case

Anna does have a case because it was obvious that she was the most qualified despite her disability. If the case was investigated, it would be clear Nancy was not the best candidate, which would imply that Anna was not hired for other reasons. Furthermore, what happened with Dave leaves the door open to assume that the disability was the only reason why for the failed employment.

Under the ADA, a qualified individual must satisfy the employers requires and be able to perform them.

If you have a disability, you must also be qualified to perform the essential functions or duties of a job, with or without reasonable accommodation, in order to be protected from job discrimination by the ADA. This means two things. First, you must satisfy the employer's requirements for the job, such as education, employment experience, skills or licenses. Second, you must be able to perform the essential functions of the job with or without reasonable accommodation. Essential functions are the fundamental job duties that you must be able to perform on your own or with the help of a reasonable accommodation. An employer cannot refuse to hire you because your disability prevents you from performing duties that are not essential to the job (ADA Law)

If a person is qualified and have a disability, the employer must provide accommodations for that individual. "An employer is required to provide a reasonable accommodation to a qualified applicant or employee with a disability unless the employer can show that the accommodation would be an undue hardship -- that is, that it would require significant difficulty or expense "(ADA Law). From there, Dave's decision was unlawful because he failed to ask Anna what accommodations would she was hired, therefore there is no proof it would be costly to him.

Unfortunately, if the expense and cost were too much of an issue for the employer to accommodate, they have the right to not to hire the disabled person, however they must prove it for legal reasons. From there, cost and expense can be a variable when considering reasonable accommodations.