Section 20: Exclusion of discrimination on account of religion, race, etc.

No person shall be required to satisfy requirements as to any of the following matters, that is to say, race (including ethnic grouping), sex, place of birth or of family origin, or religious or political persuasion, as a condition to becoming or continuing to be a student at the Centre, the holder of any appointment or employment at the Centre or a member of any body established by virtue of this Act; and no person shall be subjected to any disadvantage or accorded any advantage in relation to the Centre, by reference to any of those matters:
Provided that nothing in this section shall be construed as preventing the Centre from imposing any disability or restriction on any of the aforementioned persons, where such person wilfully refuses or fails, on grounds of religious belief to undertake any duty generally and uniformly imposed on all such persons or any group of them which duty, having regard to its nature and the special circumstances pertaining thereto, is in the opinion of the Centre reasonably justifiable in the national interest.