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 ...

Working through the night can put a toll on your body and overall health. More than 9 million adults in the United States work shifts at night, according to the U.S. Census Bureau. There are many jobs ...

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 ...