Some good information on the employee/employer relationship regarding hearing loss and employment. I beleive you can ask for an accomodation for your issue that pertains to work only.
Is an employer required to purchase a prescribed hearing device (e.g., hearing aid or cochlear implant) as a reasonable accommodation?
An employer is not required to provide an accommodation that is primarily for personal use. Reasonable accommodation applies to modifications that specifically assist an individual in performing the duties of a particular job. Equipment or devices that assist a person in daily activities on and off the job are considered personal items that an employer is not required to provide. However, in some cases, equipment that otherwise would be considered “personal” may be required as an accommodation if it is specifically designed or required to meet job-related rather than personal needs (EEOC, 2002).
When an employee does not own or benefit from a hearing aid, an employer may be required to provide a reasonable accommodation(s) that will enable effective communication, barring undue hardship.
Just one example. For you active hearing protection may be the answer.
Active Hearing Protection:Active hearing protectors use electronics to amplify signals, voices, and warning signals while suppressing harmful noise levels. Hearing protection products have a Noise Reduction Rating (NRR), which is the measure, in decibels, of how well a hearing protector reduces noise; the higher the number, the greater the noise reduction. For example, a rating of NRR 31 provides greater noise reduction than NRR 24.