Australian Capital Territory Consolidated Regulations Australian Capital Territory Consolidated RegulationsIt is a defence to a prosecution for an offence against section 22C if, at the
time the offence is alleged to have been committed, a doctor had certified in
writing that in the doctor's opinion it was undesirable, on medical grounds or
because of physical characteristics, for the defendant to wear the ear
protection devices provided for the defendant and the certificate had not been
revoked.