(1)In the case of a contributory allowance, the amount payable in respect of a claimant shall be calculated by—
(a)taking such amount as may be prescribed,
(b)if in his case the conditions of entitlement to the support component or the work-related activity component are satisfied, adding the amount of that component, and
(c)making prescribed deductions in respect of any payments to which section 3 applies.
(2)The conditions of entitlement to the support component are—
(a)that the assessment phase has ended,
(b)that the claimant has limited capability for work-related activity, and
(c)that such other conditions as may be prescribed are satisfied.
(3)The conditions of entitlement to the work-related activity component are—
(a)that the assessment phase has ended,
(b)that the claimant does not have limited capability for work-related activity, and
(c)that such other conditions as may be prescribed are satisfied.
(4)Regulations may—
(a)prescribe circumstances in which paragraph (a) of subsection (2) or (3) is not to apply;
(b)prescribe circumstances in which entitlement under subsection (2) or (3) is to be backdated;
(c)make provision about the amount of the component under subsection (2) or (3).
(5)For the purposes of this Part, a person has limited capability for work-related activity if—
(a)his capability for work-related activity is limited by his physical or mental condition, and
(b)the limitation is such that it is not reasonable to require him to undertake such activity.