Understanding Mandatory Overtime Payment Laws in India and Pakistan for Engineering Firms

Please, could you provide me with the information on mandatory overtime payment in India and Pakistan as required by the Labour Laws governing OT for an engineering company? Your quick help is highly appreciated as I need to make a business proposal for a new venture in India and Pakistan.

Regards,
Swapneel

Dear Peer,

Thank you for taking the time to respond. I have already visited the site, but it provided me with a general overview. I am seeking detailed information on the following:

1. Consider an engineering company that needs to be established in India. Will engineers working there be eligible for overtime?
2. What will be the basis of calculation?

Additionally, do workers receive any extra perks other than overtime if they work on a holiday?

Regards,
Swapneel