Are we talking working shirts or night off/out shirts ? If it was an unsafe working shirt then I'd definitely ask for another one, preferably Valentino or Trussardi.
As we know, the cumulative effect of excessive noise exposure and the tiny 'safe daily exposure' periods at some typical apron noise levels when unprotected, means that anyone with less than the optimum protection is losing part of their hearing permanently and unnecessarily for every second they are exposed.
I've often found it hard to understand why the best quallity ear protection isn't issued as standard, that a culture of blind ignorance and/or not bothering is seemingly the accepted norm on some aprons, and that people like the OP are so conspicuously left to their own devices.
Maybe as we grow older we become wiser about such things
What is 'fitting the requirements' ? I've yet to meet anyone that really knows but plenty who will point to what is provided and say that's it....Say Again?....I said That's It!