It is essential to adhere to working hours as per local state and establishment act.
So kindly check up the local enactment and fix working hours.
27th December 2018 From India, Pune
As per standard working hours either in Factories or any establishments it is 48 hours in a week, i.e, 8 hours x 6 days = 48 hours.
In your establishment it is 9 to 6, which is inclusive of intervals and lunch. Please check, it could be 8 hours excluding intervals of lunch etc.,.
29th December 2018 From India, Hyderabad