I work 3 days one week, 4 days the next week. Never more than 3 days in a row. It's 12 hour shifts, which sucked at first, but I got used to it pretty quick. The free time is amazing. I took 2 days vacation this week and ended up with 9 days off in a row because of the holiday.
What field? Medical? Those scheduled seem common for medicine and fire/police.