I work for the railroad...
It was the "all the livelong day" shifts that scared me away from this vocation.
I agree, when i was a conductor I was on call 24/7 365, worked 12hrs a day 7 days a week. Had no days off and if you wanted a day off, you had to call off sick. If you called off once a month you were calling off excessively. . I was "sick" twice a month.
As a Firefighter, I work 24 hour shifts, so I guess other for me.