54. The Commission determines the retained compensation cost for every accident and disease contemplated in section 51 by applying the following formula:
100% of the compensation cost up to a
maximum of 50% of the maximum
retained compensation cost = yearly insurable earnings + 50% of the
compensation cost that is greater than
50% and less than or equal to 100% of
the maximum yearly insurable earnings
+ 25% of the compensation cost that is
greater than 100% and less than or equal
to 150% of the maximum yearly
insurable earnings
For the purposes of the first paragraph and of section 55, the maximum yearly insurable earnings are those determined for the year during which the accident occurred or the disease was reported.