“…In a randomised trial in an NHS hospital, a 48 hour week rota (compliant with the European Working Time Directive) was associated with a 33% fall in medical errors, a rise in total daily sleep time, a substantial recovery sleep after the evening shift, and more frequent naps in the hours preceding the start of the night shifts compared with a standard rota of 56 hours a week 4. The “intervention” rota also limited consecutive night shifts to three nights maximum and shift duration to 12 hours maximum.…”