"For the purposes of the assessment of serious injury in accordance with subsections (16) and (19) -
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(e) where a worker relies upon paragraph (a), (b) or (c) of the definition of serious injury in subsection (37), the Authority or self-insurer shall not grant a certificate under subsection (16)(a) and a court shall not grant leave under subsection (16)(b) on the basis that the worker has established the loss of earning capacity required by paragraph (b) unless the worker establishes in addition to the requirements of paragraph (c) or (d), as the case may be, that -
(i) at the date of a decision under subsection (16)(a) or at the date of the hearing of an application under subsection (16)(b), the worker has a loss of earning capacity of 40 per centum or more, measured (except in the case of a worker referred to in section 5A(7) or a worker under the age of 26 years at the date of the injury) as set out in paragraph (f); and
(ii) the worker (including a worker referred to in section 5A(7) or a worker under the age of 26 years at the date of the injury) will after the date of the decision or of the hearing continue permanently to have a loss of earning capacity which will be productive of financial loss of 40 per centum or more;
(f) for the purposes of paragraph (e)(i), a worker's loss of earning capacity is to be measured by comparing the worker's gross income from personal exertion (expressed at an annual rate) which the worker is earning or is capable of earning in suitable employment as at that date with the gross income (expressed at an annual rate) that the worker was earning or was capable of earning from personal exertion or would have earned or would have been capable of earning from personal exertion during that part of the period within 3 years before and 3 years after the injury as most fairly reflects the worker's earning capacity had the injury not occurred;
(g) a worker does not establish the loss of earning capacity required by paragraph (b) where the worker has, or would have after rehabilitation or retraining, and taking into account the worker's capacity for suitable employment after the injury and, where applicable, the reasonableness of the worker's attempts to participate in rehabilitation or retraining, a capacity for any employment including alternative employment or further or additional employment which, if exercised, would result in the worker earning more than 60 per centum of gross income from personal exertion as determined in accordance with paragraph (f) had the injury not occurred;
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