(aa) where no hospitalization is necessary,—
(i) of fourteen days in the aggregate in each calendar
year if the employee has been employed for less than
two years;
(ii) of eighteen days in the aggregate in each calendar
year if the employee has been employed for two
years or more but less than five years;
(iii) of twenty-two days in the aggregate in each calendar
year if the employee has been employed for five
years or more; or
(bb) of sixty days in the aggregate in each calendar year if
hospitalization is necessary, as may be certified by such
registered medical practitioner or medical officer: