Leave Calculation In UAE ?

Dear All,
We want to clarify our HR policies and procedures among which leave calculation... 30 calendar days says the law. Ok.... but then...Do you include Fridays and Saturdays ? Do you convert these days into working days ? How do count the leave when someone for instance takes 1 week leave, from Thursday evening to Sunday morning ( Friday and Saturday are off) . What are your companies policies ?
Same question if you grant days without pay... How do you calculate the salary deduction ?
Thank you for your help....

Dear valued HR,
Greetings from Dhaka, Bangladesh.
As far as I am concerned, there are some laws which are unchanged in any country. These are unchangeable laws from HR. Let me share with what I know..
1) Any day off has to be calculated as regular pay day. Total salary / 30 days. ie. day offs are paid holiday / working days.
2) You simply count the total leave. If day offs are involved within the leave, they are also counted as leave. Say, Thursday evening to Sunday and Friday-Saturday are day off, than the total leave starts from Friday to Sunday= 3 days. Joining date: Monday! :)