Workers Compensation Act 1951

This section applies if, because of the gradual onset of a worker’s injury, it appears that the level of the worker’s average pre-incapacity weekly earnings, or average pre-incapacity weekly hours, have been affected.

The worker’s average pre-incapacity weekly earnings, or average pre-incapacity weekly hours, must be set at an amount that fairly represents the weekly amount that the worker would have been earning or working if the level had not been affected.