(1) In any proceedings
against a person for an offence under this Part, it is a defence to prove that
the person took all reasonable precautions and exercised all due diligence to
prevent the commission of the offence.
(2) The defence
provided by subsection (1) does not apply unless it is proved that the person
—
(a) took
reasonable steps to prevent or avoid the circumstances that gave rise to the
public health risk, including by putting in place any systems or safeguards
that might reasonably be expected to be provided; and
(b)
complied with the requirements of any notice or order under this Act that
related to the public health risk; and
(c) as
soon as becoming aware of the circumstances that gave rise to the public
health risk —
(i)
reported those circumstances to an appropriate
enforcement agency; and
(ii)
took all reasonable steps necessary to prevent or reduce
the public health risk.
(3) If the person is
an employer, then in addition to the things that must be proved under
subsection (2), it must also be proved that the person —
(a) had
proper systems and safeguards in place to prevent the circumstances that gave
rise to the public health risk; and
(b)
actively promoted and enforced compliance with this Act.