(1) Where in any proceedings facts are established by or on behalf of a complainant from which it may be presumed that there has been discrimination in relation to him or her, it is for the respondent to prove the contrary.

(2) This section is without prejudice to any other enactment or rule of law in relation to the burden of proof in any proceedings which may be more favourable to a complainant.

(3) Where, in any proceedings arising from a reference of a matter by the Authority to the Director under section 85(1), facts are established by or on behalf of the Authority from which it may be presumed that an action or a failure mentioned in a paragraph of that provision has occurred, it is for the respondent to prove the contrary.

(4) In this section "discrimination" includes -

(a) indirect discrimination,

(b) victimisation,

(c) harassment or sexual harassment,

(d) the inclusion in a collective agreement to which section 9 applies of a provision which, by virtue of that section, is null and void.