Dear madam,
For working hours ,rest interval, and OT you are governed by the State Shops and Eastmt Act.
The daily maximum working hours excluding lunch recess are prescribed are 8 hours and weekly hours are 48 hours.
Daily/weekly hours if exceeded, will rank for OT at double the rate.
Weekly off of one day after 6 days of work is compulsory. Depending on the requirements of the business, you may arrange staggered off but no arrangement should result into an employee working continuously for more than 10 days without an off.
If you have worked for 9 hours daily for six days, it will entail OT hour payment for number of hours worked in excess of 8/48 hours.
For more details , pl refer to the Shops Act of your state.
Regards,
Vinayak Nagarkar
HR- Consultant