2.—(1) A person who is not incapable of work of which he can reasonably be expected to do under a particular contract of service may be deemed to be incapable of work of such a kind by reason of some specific disease or bodily or mental disablement for any day on which either—
(a)(i)he is under medical care in respect of a disease or disablement as aforesaid,
(ii)it is stated by a registered medical practitioner that for precautionary or convalescent reasons consequential on such disease or disablement he should abstain from work, or from work of such a kind, and
(iii)he does not work under that contract of service, or
(b)he is excluded from work, or from work of such a kind, on the certificate of a Medical Officer for Environmental Health and is under medical observation by reason of his being a carrier, or having been in contact with a case, of infectious disease.
(2) A person who at the commencement of any day is, or thereafter on that day becomes, incapable of work of such a kind by reason of some specific disease or bodily or mental disablement, and
(a)on that day, under that contract of service, does no work, or no work except during a shift which ends on that day having begun on the previous day; and
(b)does no work under that contract of service during a shift which begins on that day and ends on the next,
shall be deemed to be incapable of work of such a kind by reason of that disease or bodily or mental disablement throughout that day.