The legislation
4 The liability of the Commonwealth to pay pension to a veteran is established, for the purposes of this case, by s 13(1)(b) and (d) of the VE Act, in a case where a veteran is incapacitated from a war-caused disease. By s 14(1), a veteran may make a claim for a pension. By s 15(1), a veteran who is in receipt of a pension may apply for an increase in the rate of the pension on the ground that the veteran's incapacity has increased since the rate of the pension was assessed or last assessed. Section 19 deals with the manner in which the Commission is to determine claims and applications. Section 22 prescribes the general rate of pension and the extreme disablement adjustment. Section 23 prescribes the intermediate rate of pension. Section 24 deals with the circumstances in which the special rate of pension is applicable, and prescribes that rate. Relevantly for the present case, it provides as follows:
(1) This section applies to a veteran if:
(aa) the veteran has made a claim under section 14 for a pension, or an application under section 15 for an increase in the rate of the pension that he or she is receiving; and
(aab) the veteran had not yet turned 65 when the claim or application was made; and
(a) either:
(i) the degree of incapacity of the veteran from war-caused injury or war-caused disease, or both, is determined under section 21A to be at least 70% or has been so determined by a determination that is in force; or
(ii) the veteran is, because he or she has suffered or is suffering from pulmonary tuberculosis, receiving or entitled to receive a pension at the general rate; and
(b) the veteran is totally and permanently incapacitated, that is to say, the veteran's incapacity from war-caused injury or war-caused disease, or both, is of such a nature as, of itself alone, to render the veteran incapable of undertaking remunerative work for periods aggregating more than 8 hours per week; and
(c) the veteran is, by reason of incapacity from that war-caused injury or war-caused disease, or both, alone, prevented from continuing to undertake remunerative work that the veteran was undertaking and is, by reason thereof, suffering a loss of salary or wages, or of earnings on his or her own account, that the veteran would not be suffering if the veteran were free of that incapacity...
(2) For the purpose of paragraph (1)(c):
(a) a veteran who is incapacitated from war-caused injury or war- caused disease, or both, shall not be taken to be suffering a loss of salary or wages, or of earnings on his or her own account, by reason of that incapacity if:
(i) the veteran has ceased to engage in remunerative work for reasons other than his or her incapacity from that war- caused injury or war-caused disease, or both; or
(ii) the veteran is incapacitated, or prevented, from engaging in remunerative work for some other reason; and
(b) where a veteran, not being a veteran who has attained the age of 65 years, who has not been engaged in remunerative work satisfies the Commission that he or she has been genuinely seeking to engage in remunerative work, that he or she would, but for that incapacity, be continuing so to seek to engage in remunerative work and that that incapacity is the substantial cause of his or her inability to obtain remunerative work in which to engage, the veteran shall be treated as having been prevented by reason of that incapacity from continuing to undertake remunerative work that the veteran was undertaking.
5 Section 119(1) of the VE Act, so far as relevant to the arguments advanced in the present case, provides:
In considering, hearing or determining, and in making a decision in relation to:
(a) a claim or application...
the Commission:
(f) is not bound to act in a formal manner and is not bound by any rules of evidence, but may inform itself on any matter in such manner as it thinks just;
(g) shall act according to substantial justice and the substantial merits of the case, without regard to legal form and technicalities; and
(h) without limiting the generality of the foregoing, shall take into account any difficulties that, for any reason, lie in the way of ascertaining the existence of any fact, matter, cause or circumstance, including any reason attributable to:
(i) the effects of the passage of time, including the effect of the passage of time on the availability of witnesses; and
(ii) the absence of, or a deficiency in, relevant official records, including an absence or deficiency resulting from the fact that an occurrence that happened during the service of a veteran, or of a member of the Defence Force or of a Peacekeeping Force, as defined by subsection 68(1), was not reported to the appropriate authorities.