About 30% of American workers reporting six or fewer hours sleeping per day, and the number of workers who are not getting enough sleep is growing according to the recent NIOSH study and blog.
Various factors including work demand, shift work, and social burden can affect sleep deprivation and sleep quality, and the sleep issue of workers can affect not only the workplace but also community.
You can find various study results in the recent NIOSH blog posting. (https://blogs.cdc.gov/niosh-science-blog/2012/03/08/sleep-and-work/). That posting also includes several guides for employers and workers to address this issue.
The article mentioned is below.
NIOSH science blog; Sleep and Work
Posted on March 8, 2012
Claire Caruso, PhD, RN, and Roger R Rosa, PhD