The standard workday runs from 9 a.m. to 5 p.m. Those who work other hours are engaged in “shift work”—starting before 7 a.m., ending after 6 p.m., and especially working overnight or a mixture of ...

Tradesmen working in high-risk environments are regularly exposing themselves to labor-intensive and dangerous tasks. Now add in doing this work at 3:00 a.m. when the rest of the world is asleep. That ...

Train and bus drivers, doctors and carers, employees in companies where machines run around the clock: In many industries, people work in shifts. Some start early in the morning, or at midday. Others ...