9am-6pm(flexible working hours)
Depends upon work. One is generally advised to work during day light. One can't drive at night between 11pm-6.00 am next morning, to ensure that people take good rest at night. More stress was given on better planning and execution to minimise time on travel.
For field team: Not defined, depending on situation one has to prepare for long hours from 14-18 hours. You will be asked not use celphone during driving but same time managers gives lot of assignments to accoplish that is practically impossible.