Discrimination against persons with disability, etc.
A person discriminates against another person in any circumstances relevant for the purposes of any provision of this Ordinance if-
(a) on the ground of that other person's disability he treats him less favourably than he treats or would treat a person without a disability;
(b) he applies to that other person a requirement or condition which he applies or would apply equally to a person without a disability but-
(i) which is such that the proportion of persons with a disability who can comply with it is considerably smaller than the proportion of persons without a disability who can comply with it;
(ii) which he cannot show to be justifiable irrespective of the disability or absence of the disability of the person to whom it is applied; and
(iii) which is to that person's detriment because he cannot comply with it; or
(c) on the ground of the disability of an associate of that other person he treats him less favourably than he treats or would treat a person without such a disability.