This is my two cents, and then I'm done with this one.
First of all, how do you even define what is barrier free? You want to put “barrier free” in legislation, but we don't know what that means, because that definition is always changing, right?
The proper place for that to be is in the regulations. If somebody has, as James mentioned, an allergy to perfume, or a problem with wireless, and they have the electromagnetic piece, these things haven't even come to the table yet.
If you're putting in a statement that head office must be barrier free, what does that mean?