A recent study published in the Journal of Community Health revealed that around 50 percent of protective-service workers sleep less than seven hours each night. These workers collectively receive less sleep than any other occupation group studied. The second most sleep-deprived group consists of health-care support workers such as home health aides and nursing assistants. Authors of the study concluded that these findings are concerning because the individuals who are not sleeping enough have jobs that directly impact population health and safety.
See "These are the most sleep-deprived professions in America", Meera Jagannathan, Market Watch, November 12, 2019