(1) An employer is liable to pay compensation under this Act if a worker of the employer suffers personal injury arising out of, or in the course of, the worker's employment.
(2) However, if the injury is caused by a disease, the injury is taken to have arisen out of, or in the course of, the worker's employment only if the employment substantially contributes to the injury.
(3) Also, an injury suffered by a worker partly or completely because the worker had any of the following pre-existing conditions is taken to have arisen out of, or in the course of, the worker's employment only if the employment substantially contributes to the injury:
(a) diseased heart valve;
(b) coronary artery disease;
(c) aortic aneurism;
(d) cerebral aneurism;
(e) any other condition prescribed by regulation for this section.
(4) Further, this section is subject to the following provisions:
(a) part 4.2A (Employment connection with ACT or State);
(b) section 34 (Injury outside Australia);
(c) part 4.8 (Exceptions to entitlements to compensation);
(d) in relation to the entitlement to weekly compensation—
(i) section 37 (What if the worker is dead?);
(ii) section 113 (Compliance by workers).