How many hours can you work on feild?

Depending on the work load

i can work in field for max 18 hours.

I used to work in field for about 10 hours.

 i can work for 8 hours infield daily

I can work on field from 6 to 7 Hours Daily

Five to eight hours work in the field

I used to work mor than eight hours when required, sometimes I worked a whole day although that used to be compensated later on.

I can work 8 hours a day and 7 days a week...it  depends the condition of my body but i can manage the pressure...

I can and have worked up to 26 hours on field during my experience as a field engineer with Schlumberger. 

I CAN WORK IN THE FILED BETWEEN 8 - 12 HOURS