Having a hearing problem does not mean that you cannot work.
Can you Type?
Just because you can’t hear or hear that well does not mean that you cannot type. In the legal field there are plenty of jobs based on type. Typing is one of the most important skill to have in the legal industry. Being detail oriented and accuracy is another.
Legal Jobs
One of the most popular jobs in the legal field is a paralegal. If this is the route you choose, your paralegal certification is necessary. Getting certified is not that hard and it does not take that much time.
One way to look at getting a paralegal certification is, the certification will be able to go wherever you go. Which means if you choose to switch firms at some point in your career, certification and all of your experience follows you.