2—(1) The second condition is that—N.I.
(a)the claimant has in respect of the last two complete tax years before the beginning of the relevant benefit year either paid or been credited with Class 1 or Class 2 contributions or been credited with earnings, and
(b)the earnings factor derived as mentioned in sub-paragraph (2) must be not less in each of those years than the year's lower earnings limit multiplied by 50.
(2) The earnings factor referred to in sub-paragraph (1)(b) is the aggregate of the claimant's earnings factors derived—
(a)from so much of his earnings as did not exceed the upper earnings limit for the year and upon which primary Class 1 contributions have been paid or treated as paid or from earnings credited, and
(b)from Class 2 contributions.
(3) Where primary Class 1 contributions have been paid or treated as paid on any part of a person's earnings, sub-paragraph (2)(a) shall have effect as if such contributions had been paid or treated as paid on so much of the earnings as did not exceed the upper earnings limit for the year.