Well, I don't know the answer to your question. At all my interviews I do not let the interviewer know that I wear ha's. I wait until I get hired. And then those I work with, I tell them that I need them to look at me when they talk and if they get no response from me, then I didn't hear them. Most people are accomodating. If they let me go because of my hearing, then yes, I can sue because as you know that is discrimination.