Relevant legislation can be found here:
http://www.legislation.vic.gov.au/Domino/Web_Notes/LDMS/PubLawToday.nsf/2184e627479f8392ca256da50082bf3e/6DD27AAAAA5956A7CA2574EB00016845/$FILE/08-58a001.pdf
Quote: 8 Obligations of registered health practitioner who
has conscientious objection
(1) If a woman requests a registered health
practitioner to advise on a proposed abortion, or to
perform, direct, authorise or supervise an abortion
for that woman, and the practitioner has a
conscientious objection to abortion, the
practitioner must—
(a) inform the woman that the practitioner has a
conscientious objection to abortion; and
(b) refer the woman to another registered health
practitioner in the same regulated health
profession who the practitioner knows does
not have a conscientious objection to
abortion.
(2) Subsection (1) does not apply to a practitioner
who is under a duty set out in subsection (3)
or (4).
(3) Despite any conscientious objection to abortion,
a registered medical practitioner is under a duty to
perform an abortion in an emergency where the
abortion is necessary to preserve the life of the
pregnant woman.
(4) Despite any conscientious objection to abortion,
a registered nurse is under a duty to assist a
registered medical practitioner in performing an
abortion in an emergency where the abortion is
necessary to preserve the life of the pregnant
woman.
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s. 8