After section 5A(2) of the Accident Compensation Act 1985 , insert —
"(2A) For the purposes of subsection (1), if during the 12 months immediately before the injury, a worker—
(a) is promoted; or
(b) is appointed to a different position—
with the result that the worker's ordinary time rate of pay is increased, any period before the promotion or appointment takes effect is to be disregarded for the purpose of calculating the worker's average weekly earnings.".