In a survey of more than 12,500 extended-hours workers, 30 percent of male workers and 41 percent of female workers reported "Chronic or Frequent" back pain, according to a report, "Ergonomics Risks, Myths, and Solutions for Extended Hours Operations," issued by Circadian Technologies.
Sixteen percent of male workers and 27 percent of female workers reported "Chronic or Frequent" wrist pain.