A considerable proportion of shift workers have work schedule-related insomnia and/or excessive sleepiness, a phenomenon described as shift work disorder (SWD). There is yet a lack of evidence on whether or not employees recover from symptoms of SWD between work shifts. We studied whether SWD and its subtypes are associated with insomnia and excessive sleepiness during weekly non-work days and with 24-h sleep time. Hospital employees answered a survey on SWD, insomnia and excessive sleepiness on weekly non-work days, and 24-h sleep. To identify shift workers with night shifts (n=2,900, 18% with SWD) and SWD, we linked survey responses to employers’ register on working hours. SWD included three subtypes: insomnia only (SWD-I, 4%, n=102), excessive sleepiness only (SWD-Es, 8%, n=244), and both insomnia and excessive sleepiness (SWD-IEs, 6%, n=183). Based on regression analyses, SWD was associated with excessive sleepiness on non-work days (OR: 1.42, 95% CI: 1.07–1.88) and with insomnia on non-work days (0.53, 0.31–0.91). SWD-I was associated with excessive sleepiness on non-work days (2.25, 1.31–3.87) and with shorter sleep (7–7.5 h: 1.96, 1.06–3.63; ≤6.5h: 2.39, 1.24–4.59; reference: ≥8 h). The results suggest that especially employees with SWD-I may need longer time to overcome excessive sleepiness than allowed by their roster.

相当一部分轮班工人患有与工作计划有关的失眠和/或过度嗜睡，这种现象被描述为轮班工作障碍（SWD）。关于员工是否在轮班之间是否从社署的症状中康复还缺乏证据。我们研究了SWD及其亚型是否与每周非工作日以及24小时睡眠时间的失眠和过度嗜睡有关。医院员工回答了一项关于社署，每周非工作日失眠和过度嗜睡以及24小时睡眠的调查。为了确定有夜班的轮班工人（n = 2,900，SWD为18％），我们将调查答复与雇主的工作时间登记表关联起来。社署包括三种亚型：仅失眠（SWD-1，4％，n = 102），仅过度嗜睡（SWD-Es，8％，n = 244），失眠和过度嗜睡（SWD-IEs，6％， n = 183）。根据回归分析，SWD与非工作日过度嗜睡有关（OR：1.42，95％CI：1.07-1.88）和非工作日失眠（0.53，0.31-0.91）。SWD-1与非工作日的过度嗜睡有关（2.25，1.31–3.87）和睡眠时间短（7–7.5 h：1.96，1.06-3.63;≤6.5h：2.39，1.24–4.59;参考值：≥8 H）。结果表明，特别是患有SWD-I的员工可能需要比其名册所允许的更长的时间来克服过度的困倦。