Most non-transport industries do not look for the lack of sleep or fatigue as a factor in their investigations. Unless a formal investigation is undertaken, fatigue is rarely mentioned and, if it is, it is categorised as a “contributory factor”, which often means it is given such a low priority that nothing will be done about it. This is partly a legacy of silo thinking that sleep is a non-work personal activity, which it is, but is still one that can affect work and all the relationships and decisions made at work. But it is also partly due to the enormous disruption that could result if the lack of sleep and fatigue were taken seriously and effective control measures were introduced.
The most effective control for fatigue may be human-friendly shifts and “reasonable” working hours but that might not fit the shift rosters which are required to satisfy clients. We know that night shift has higher health and physical risks than day shift so logically, get rid of night shift ….