(1) This section applies to a component of the worker's earnings or hours attributable to overtime.
(2) The overtime is to be taken into account in working out average pre-incapacity weekly earnings or average pre-incapacity weekly hours only if—
(a) the worker worked overtime in accordance with a regular and established pattern; and
(b) the pattern was substantially uniform as to the number of hours of overtime worked; and
(c) the worker would have continued to work overtime in accordance with the established pattern if the worker had not been injured.