how many hours a day before have to take lunch
For every 4 hours you work you should get a 15 minute break. You have to work 6 hours for a 30 minute break and I think its 8 hours for an hour break. In a day of 8 hours duty, the lunch break will be after 4 hours and a tea has to be served or will be taken within the campus in 2 hours before that. No specifics expect in govt.