Workers Compensation Act 1987

If an injury consists in the aggravation, acceleration, exacerbation or deterioration of a disease—

the injury shall, for the purposes of this Act, be deemed to have happened—

at the time of the worker’s death or incapacity, or

if death or incapacity has not resulted from the injury—at the time the worker makes a claim for compensation with respect to the injury, and

compensation is payable by the employer who last employed the worker in employment that was a substantial contributing factor to the aggravation, acceleration, exacerbation or deterioration.

Any employers who, during the 12 months preceding a worker’s death or incapacity or the date of the claim (as the case requires), employed the worker in any such employment shall be liable to make to the employer by whom compensation is payable such contributions as, in default of agreement, may be determined by the Commission.

The Commission is to determine the contributions that a particular employer is liable to make on the basis of the following formula, or on such other basis as the Commission considers just and equitable in the special circumstances of the case—

In this section, a reference to an injury includes a reference to a permanent impairment for which compensation is payable under Division 4 of Part 3.

This section does not apply to an injury to which section 17 applies.