Why is there a problem??? If you want to exist and operate in the "normal" world, you cannot expect everyone to make special arrangements and have special consideration for you, particularly when you are not making the best efforts you can to mitigate the problem yourself.
They didn't have to employ the HOH person, they could have saved themselves a whole bag of problems by not doing so....so anyone who DOES employ ANYONE with any form of disability knows and accepts that there will be more work required at times from themselves and the rest of their staff to ensure that the job can be done properly....
but I don't see why anyone who has any form of disability should just expect everyone else to make all the allowances and excuses for them, BECAUSE they have a disability.
I employ someone who has "learning difficulties". It takes him ages to do something new in the routine...and he drives us mad sometimes when you have told him/shown him for the umpteenth time....but we also know that sooner or later it WILL click in and he will be ok after that.
At the end of the day, it applies to all aspect of, in our case, deafness. If you want to exist wholly and soley within the deaf community, whether HOH or profoundly/totally deaf, then thats up to you. If you want to embrace both hearing and non hearing culture then it is as much your responsibility to make the effort as it is for the hearing community to be sympathetic to your difficulties......and both communities will have people whose tolerance levels of the other "side" is less than it might be!