553. Subject to section 555, the provisions of this Act apply to industrial accidents and deaths which occur from the date of their coming into force.
Subject to section 555 and the first paragraph of section 576, the provisions of this Act apply to occupational diseases for which a claim is made from the date of their coming into force.
The provisions of this Act also apply to the classification and assessment made for the year 1986 and subsequent years and to the imputation made from the date of their coming into force.