QFT.
Depending on the range of hearing loss, this legal action could fall under the ADA as a reasonable accommodation. As someone who has lived with partial deafness for most of his life (now corrected thanks to a great surgeon) I can tell you from experience that it's stigmatic. If you're not a fully deaf signer, partial deafness is "just an annoyance" in others' eyes and puts you at the same status as the mostly-deaf grandpa you have to yell at to pass the peas but who then hands you the car keys instead. It's nice to be able to hear all of what's going on around me now (for the most part; it's much harder to tune out people who need to ****), but the years leading up to it were frustrating as hell.