(1) The notice referred to in sub-clause (i) of clause (a), of subsection (2) of Section 5 of the Act shall be in Form II and it shall be served—
(i) by giving or tendering to the employee ; or
(ii) if the employee is not found, by leaving such notice at his last known place of abode, or by giving or tendering the same to some adult member of his family.
(2) The signature of the person to whom the notice is given or tendered together with the date on which and hour at which it was so given or tendered shall be obtained on a duplicate copy of the notice.
(3) For the purpose of the proviso to clause (b) of sub-section (2) of Section 5 of the Act the daily average wages of an employee mentioned in that sub-section shall be calculated by dividing by twelve the total wages earned by him during any period of twelve days within a continuous period of thirty days immediately preceding the holiday concerned, such twelve days being days on which he had actually worked.