Circumstances in which persons are or are not to be treated as engaged or regularly and substantially engaged in caring for severely disabled persons
4.—(1) A person shall be treated as engaged and as regularly and substantially engaged in caring for a severely disabled person on every day in a week if, and shall not be treated as engaged or regularly and substantially engaged in caring for a severely disabled person on any day in a week unless, as at that week he is, or is likely to be, engaged and regularly engaged for at least 35 hours a week in caring for that severely disabled person.
(2) A week in respect of which a person fails to satisfy the requirements of paragraph (1) of this regulation shall be treated as a week in respect of which that person satisfies those requirements if he establishes—
(a)that he has only temporarily ceased to satisfy them; and
(b)that (disregarding the provisions of this sub-paragraph) he has satisfied them for at least 14 weeks in the period of 26 weeks ending with that week and would have satisfied them for at least 22 weeks in that period but for the fact that either he or the severely disabled person for whom he has been caring was undergoing medical or other treatment as an in-patient in a hospital or similar institution.