Hello,
Generally, Earned Leave/Sick Leave can be either prefixed or suffixed to any Holiday or Weekly off, and only the number of actual leave availed shall be counted for availing purposes.
However, no leave can be both prefixed and suffixed to a Holiday/Weekly Off. In case any leave is both prefixed and suffixed to a Holiday/Weekly Off, the number of leaves availed shall be counted from the 1st absence (leave) to the last absence, including the Holiday(s)/Week Off(s) for availing purposes.
In your case, if both weekly offs fall in between the leave period of 15 days, then they should be counted. For example, if an employee takes leave from 7 July 2007 to 16 July 2007 and the Weekly Off is Sunday, then the Leave Days (10 days) will include both 8th & 15th July.
Leave rules differ from company to company.
As per the explanation given for Subsection 1 of Section 79 of the Factories Act, 1948:
The leave admissible under this subsection shall be exclusive of all Holidays, whether occurring during or at either end of the period of leave.
Thanks & Regards,
Anuj