Prevent fatigue as far as reasonably possible through good work design. Example controls: for hours and shifts, monitor actual hours against the roster, provide enough workers, time and resources, ensure regular breaks to rest, eat and rehydrate, roster sleepovers so workers wake rested, use forward rotating rosters (day-evening-night), schedule hazardous high-concentration work outside the low body clock period of 2 am to 6 am and give shift and night workers consecutive days off allowing at least two full nights' rest including some weekends; for tasks and environment, rotate workers through demanding tasks, plan tasks and equipment to remove unnecessary work, keep the workplace lit, safe and secure, put safeguards on hazardous concentration tasks, select low noise and vibration equipment and provide suitable rest areas; and for individuals, design rosters that fit work and personal commitments, have a clear fatigue policy and monitoring procedures, support new and returning workers, give information on managing fatigue such as transitions onto night shift and give notice of shifts, especially long, irregular or night shifts. A hospital's safe hours policy after a medication error with a nurse who had worked over 240 hours in a month adopted forward rotation, a night shift cap, minimum days off and breaks between shifts, escalation for replacement staff and monitoring of hours and fatigue.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.