Share on Google Plus. People who are deaf or have a hearing impairment may be protected from workplace discrimination by the Americans with Disabilities Act (ADA). The ADA applies to private employers with at least 15 employees, as well as to state and local government employers.If you are covered by the ADA, an employer may not discriminate against you based on your hearing impairment.You are also entitled to a reasonable accommodation -- changes to the job or workplace that will allow you to do your job -- as long as it doesn't create an undue hardship for your employer.he ADA applies to private employers with at least 15 employees, as well as to state and local government employers. If you are covered by the ADA, an employer may not discriminate against you based on your hearing impairment.