(1) This section applies to a part-time employee who -

(a) works on a casual basis, and

(b) does not fall within a class of employee prescribed under subsection (7).

(2) Notwithstanding section 9(1), a part-time employee to whom this section applies may, if such less favourable treatment can be justified on objective grounds, be treated, in respect of a particular condition of employment, in a less favourable manner than a comparable full-time employee.

(3) Nothing in subsection (2) shall be construed as affecting the application of a relevant enactment, by virtue of section 8, to a part-time employee.

(4) For the purposes of this section, a part-time employee shall, at a particular time, be regarded as working on a casual basis if -

(a) at that time -

(i) he or she has been in the continuous service of the employer for a period of less than 13 weeks, and