I didn't tell my new employer I was hard of hearing. I did the interview one on one and so I used my risidual hearing along with lip reading. Maybe that isn't the most honest, but I know how hard it is to get hired when you tell employers up front. So I faked it. Once I got hired and went through orientation, I went to HR to requrest RTC services for my classes. They were pretty irritated, but nothing they can do now. I have a job, and they can't fire me for being hoh or I could sue them.
Of course, I don't know your situtation or how bad your hearing is, or if you can lip read or anything. I know everyone's situation is different. That's just what worked for me.