I'm looking for information about jobs that people who are hard of hearing have?

Without knowing the prefered method of communication it's hard to say... but I guess they could do loads of jobs, they just need to consider what part communication plays in the job and can they do it. I once knew a deaf teacher, she taught in a school for deaf children. mind you, I find that with this era of political correctness, some deaf people don't like the word deaf, they prefer 'hearing impaired' or something similar.