Dear Aman,
What is your designation? What about you? Do you get paid weekly off or unpaid weekly off? Would you mind to quote example wherein you have seen salary deduction takes place of a regular employee for weekly off?
It appears to me that your query stems out of your preponderance. It appears that you look down upon a section of society who are economically weak. Paid weekly off is workers' legal right and not employer's noblesse oblige.
These HR forums are for asking queries. Nevertheless, in the course of asking queries there is limit to what extent you should exhibit your ignorance. Unfortunately, you have exercised your choice through your query.
Thanks,
Dinesh Divekar