(1) Compensation is payable under this Part in respect of a heart attack injury or a stroke injury to a worker only:
(a) for a heart attack or stroke injury that arose in the course of, or was caused by, a disease – if the worker's employment materially contributed to the injury or disease; or
(b) for a heart attack or stroke injury that did not arise in the course of a disease and was not caused by a disease – if the worker's employment materially contributed to the injury.
(2) In determining, for subsection (1), whether the worker's employment materially contributed to the injury or disease:
(a) the following must be taken into account:
(i) the duration of the worker's employment with the employer or employers who were the worker's employers at the time of the injury or the onset of the disease;
(ii) the nature of the work performed;
(iii) the particular tasks of the employment;
(iv) the probability of the injury or disease occurring if that employment had not taken place;
(v) the existence of any hereditary risks;
(vi) the lifestyle of the worker;
(vii) the activities of the worker outside the workplace; and
(b) the material contribution of the worker's employment to the injury or disease is to be determined in accordance with section 4(8).
(3) In this section:
"heart attack injury" means an injury to the heart, or a blood vessel supplying blood to, or associated with, the heart, that consists of, is caused by, results in or is associated with any of the following:
(a) a heart attack;
(b) a myocardial infarction;
(c) a myocardial ischaemia;
(d) angina, whether unstable or otherwise;
(e) fibrillation, whether atrial, ventricular or otherwise;
(f) an arrhythmia of the heart;
(g) tachycardia, whether ventricular, supra ventricular or otherwise;
(h) harm or damage to the blood vessel or associated plaque;
(i) an impairment, disturbance or alteration of blood, or blood circulation, within the blood vessel;
(j) an occlusion of the blood vessel, whether the occlusion is total or partial;
(k) a rupture of the blood vessel, including a rupture of an aneurism of the blood vessel;
(l) a haemorrhage from the blood vessel;
(m) an aortic dissection;
(n) any consequential physical harm or damage, including harm or damage to the brain;
(o) any consequential mental harm or damage.
"stroke injury" means an injury to the brain, or a blood vessel supplying blood to, or associated with, the brain, that consists of, is caused by, results in or is associated with any of the following:
(a) a stroke;
(b) a cerebral infarction;
(c) a cerebral ischaemia;
(d) a rupture of the blood vessel, including a rupture of an aneurism of the blood vessel;
(e) a subarachnoid haemorrhage;
(f) a haemorrhage from the blood vessel;
(g) harm or damage to the blood vessel or associated plaque;
(h) an impairment, disturbance or alteration of blood, or blood circulation, within the blood vessel;
(i) an occlusion of the blood vessel, whether the occlusion is total or partial;
(j) any consequential physical harm or damage, including neurological harm or damage;
(k) any consequential mental harm or damage.