5. For the purposes of section 5 of the Act, treatment is always to be taken to be justified if an employer requires from a disabled person the same rate of contribution to an occupational pension scheme as he requires from his other employees (or from any class of his employees which includes the disabled person but which is not defined by reference to any disability), notwithstanding that the disabled person is not eligible under that scheme, for a reason related to his disability, to receive a benefit or to receive a benefit at the same rate as a comparable person to whom that reason does not apply.