The legislation
14 As it stood at the time of Ms Scott's original application for DSP, on 28 January 1993, s 94 of the Social Security Act provided relevantly:
"(1) A person is qualified for disability support pension if:
(a) the person has a physical, intellectual or psychiatric impairment; and
(b) the person's impairment is of 20% or more under the Impairment
Tables; and
(c) the person has a continuing inability to work; and
(d) the person has turned 16; and
(e) the person either:
(i) is an Australian resident at the time when the person first
satisfies paragraph (c); or
(ii) has 10 years qualifying Australian residence; or
(iii) is born outside Australia and, at the time when the person first
satisfies paragraph (c) the person:
(A) is not an Australian resident; and
(B) is a dependent child of an Australian resident;
and the person becomes an Australian resident while a dependent child of an Australian resident."
The term "Impairment Tables" was defined in s 23(1) to mean the tables in Sch 1B. Those tables were extensive and it is unnecessary, for the purposes of this proceeding, to go to them in detail. Section 94 contained definitions, and conditions with respect to the applicability of, terms used in subs (1), namely "continuing inability to work", "educational or vocational training" and "work". Those provisions are not relevant to the present case.
15 Section 100(3) gave certain entitlements to a person who, although not qualified for a DSP on the day on which the claim was lodged, became qualified during a three-month period starting immediately after the day on which the claim was lodged. The provisional commencement day for such a person was the day of qualification, instead of the day of lodging the claim, which was the usual rule under s 100(1).
16 Section 106 provided as follows:
"(1) A person who wants to be granted a disability support pension must
make a proper claim for that pension.
(2) For the purposes of subsection (1), where:
(a) a claim for disability support pension is made by or on behalf of a
person; and
(b) at the time the claim is made, the claim cannot be granted because the
person is not qualified for that pension;
the claim is, subject to subsection 100 (3), to be taken not to have been made."
17 Section 107 provided that, to be a proper claim, a claim must be made in writing and be in accordance with a form approved by the Secretary. Section 108 provided that, to be a proper claim, a claim must be lodged at an office of the DSS or at a place approved, or with a person approved, for the purpose by the Secretary. Section 113 provided that the Secretary must, in accordance with the Social Security Act, determine the claim. By s 114, the Secretary was required to determine that the claim be granted if the Secretary were satisfied
that the person was qualified for a DSP and the pension was payable. Section 116(1) provided:
"The Secretary must direct that a claimant for disability support pension be examined by a medical practitioner or practitioners unless:
(a) it is manifest that:
(i) the claimant has a physical, intellectual or psychiatric
impairment of 20% or more under the Impairment
Tables; and
(ii) the claimant has a continuing inability to work; or
(b) it is manifest that the claimant is permanently blind; or
(c) the claimant's rate of disability support pension, if granted,
would be nil; or
(d) the claimant does not satisfy the requirements of paragraph 94
(1) (d) or section 109 (age requirements) or paragraph 94 (1)
(f) or section 110 (residence requirements)."
18 Section 116(3) required the medical practitioner who had examined the claimant because of a direction under subs (1) to give a certificate stating the practitioner's opinion as to whether the claimant had an impairment or was permanently blind and, if so, the effect of the impairment on the claimant's ability to work. By subs (4), the medical practitioner, if required to do so by the Secretary, must include in the certificate the practitioner's opinion as to the percentage of the person's impairment (if any) under the Impairment Tables. By s 118, a DSP became payable to a person on the first day on which the person was qualified for the pension and no provision of the Act made the pension not payable to the person.
19 On 30 June 1995, when Ms Scott applied for special benefit, s 729 of the Social Security Act provided, so far as is relevant to this proceeding:
"(1) A person is qualified for a special benefit for a period if the Secretary
determines, in accordance with subsection (2), that a special benefit
should be granted to the person for the period.
(2) The Secretary may, in his or her discretion, determine that a special
benefit should be granted to a person for a period if:
(a) no social security pension is payable to the person during the period;
and
(b) no other social security benefit is payable to the person for the
period".
Other provisions of the section excluded persons with certain entitlements, either wholly or in certain circumstances. They are not relevant to the present proceeding. A definition of the phrase "social security pension" appeared in s 23(1). It contained a list of eleven pensions, supplements or allowances, including, in par (b) of the definition, "a disability support pension". The definition of "social security benefit", also in s 23(1), contained a list of allowances.
20 Section 733 of the Social Security Act imposed an assets test before special benefit was payable. The level of assets at which special benefit ceased to be payable depended upon whether the person was not a member of a couple, partnered with a partner getting neither pension nor benefit, or partnered with a partner getting pension or benefit.
21 Section 740(1) provided that a person wanting to be granted a special benefit must make a proper claim for that benefit. By s 741, to be a proper claim, a claim was required to be made in writing and to be in accordance with a form approved by the Secretary. Section 742(1) provided that, to be a proper claim, a claim was required to be lodged at an office of the DSS, at a place approved for the purpose by the Secretary, or with a person approved for the purpose by the Secretary. Section 743 provided that the Secretary must, in accordance with the Social Security Act, determine the claim. Section 744 provided that the Secretary was to determine that the claim was to be granted if the Secretary was satisfied that the person was qualified for a special benefit and the benefit was payable. By s 746, the rate of a person's special benefit was the fortnightly rate determined by the Secretary "in his or her discretion", but was not to exceed the rate at which job search allowance, youth training allowance or newstart allowance would be payable to a person if the person were qualified for such an allowance and that allowance were payable to the person. By s 748, special benefit became payable to a person on the first day on which the person was qualified for the benefit and no provision of the Social Security Act made the benefit not payable to the person.
22 Most of the decision-making powers contained in the Social Security Act were conferred on "the Secretary". Section 23(1) defined "Secretary" to mean, in most cases, and in all cases relevant to the present proceeding, the Secretary to the DSS. By s 1299, the Secretary was empowered, by signed instrument, to delegate to an officer all or any of the powers of the Secretary under the Social Security Act, with some exceptions not material to the present proceeding. The term"officer" was defined in s 23(1) to mean "a person performing duties, or exercising powers or functions under or in relation to this Act".
23 Chapter 6 of the Social Security Act dealt with review of decisions. Section 1239(1)(a) empowered the Secretary to review a decision of an officer under the Social Security Act if satisfied that there was sufficient reason to review the decision. By subs (3), this power could be exercised even if an application had been made to the SSAT or the AAT for review of the decision. By s 1239(4), the Secretary was empowered to affirm the decision, vary the decision, or set the decision aside and substitute a new decision.
24 Section 1240 entitled a person affected by a decision of an officer under the Social Security Act to apply to the Secretary for review of the decision. If such an application were made, the review was conducted by the Secretary or an Authorised Review Officer. By s 1243, in the case of an application for review of a decision, the Secretary or the Authorised Review Officer was required to affirm the decision, vary the decision, or set the decision aside and substitute a new decision. By s 1301(1), the Secretary was empowered to authorise an officer to perform duties as an Authorised Review Officer for the purposes of the Act.
25 Part 6.2 of the Social Security Act made provision for review of decisions by the SSAT. The entitlement to apply for a review was limited by s 1247(1) to cases in which a decision had been reviewed by the Secretary or an Authorised Review Officer and had been affirmed, varied or set aside. If a decision had been reviewed by the SSAT and had been affirmed, varied or set aside, application could be made to the AAT, pursuant to s 1283. Section 1338(1), provided that a member of the SSAT had, in the performance of his or her duties as a member, the same protection and immunity as a member of the AAT. Section 60(1) of the Administrative Appeals Tribunal Act 1975 (Cth) ("the AAT Act") provided that a member of the AAT had, in the performance of his or her duties as a member, the same protection and immunity as a justice of the High Court.
26 Finally, reference should be made to s 1296 of the Social Security Act, which provides:
"In administering this Act, the Secretary is to have regard to:
(a) the desirability of achieving the following results:
(i) the ready availability to members of the public of advice and
information services relating to income support;
(ii) the ready availability of publications containing clear
statements about income support entitlements and procedural
requirements;
(iii) the delivery of services under the Act in a fair, courteous,
prompt and cost-efficient manner;
(iv) a process of monitoring and evaluating delivery of programs
with an emphasis on the impact of programs on social security
recipients;
(v) the establishment of procedures to ensure that abuses of the
social security system are minimised; and
(b) the special needs of disadvantaged groups in the community; and
(c) the need to be responsive to Aboriginality and to cultural and
linguistic diversity; and
(d) the importance of the systems of review of decisions under the Act;
and
(e) the need to apply government policy, in accordance with the law and
with due regard to relevant decisions of the Administrative Appeals
Tribunal and the Social Security Appeals Tribunal."