Some Ppl have the life

There is collegue in my office that works 12 hour shifts for 4 days a week, which totals his hours to 48 hours a week, the rest of them work 10 hours 5 days a week which totals to 50hours.

how is it that working a longer shift gives better hours (avoid traffic inconveniences), better renumerations (bonus 500 allowences), and less hours a week in general.

there are also break moments of 15min, lunch 1 hour, break 15 min, and 30 min break which totals to 2 hours for the 12 hour shift workers.

and for the 10 hour shifts, its 15,1hour,15...
looks like i would like to apply for a longer duration for a better life :P

P.S.
the downside of the 12 hour shifts is that i will have to work at least 1 day of the weekend and my off will be random within the week.
[which i think is beautiful as most office work like banking can be done on days like that :)]