I kind of doubt a hearing-orientated job will usually go out of their ways to do these things, especially an owner of one. That's just the way it works with hearing jobs.. If you go too gung-ho or rambo about unequal disabilities or whatever, it could end up costing you the employment which is no good.
I know what you mean Peps, I mean really. Back in college for my last degree, there were times the teacher or TA would decide to announce things instead of write them or make a note. The room was pretty big, big university lecture movie theater style for over 300+ students etc.
They would announce "oh, and no class next lecture". Or, "we'll change the test to next week. "
If I didn't hear it, I didn't know it. I then had to rely on keeping up with my friends to know, but once I did go to class expecting an exam only to find out there wasn't one.
At my last job, I was really lucky that everything relied on PDA docs and text/SMS messaging.