Electric lighting has decreased dependence on natural light to illuminate the workplace. Humans are genetically predisposed to be day-oriented (diurnal) and depend on daylight to regulate circadian rhythms. Shift work will force workers to sleep and work at non-biological times, inducing circadian disruption with implications for workers’ safety and health. The scientific literature may be used in practice in shift work settings to improve safety, performance and health in the workplace by reducing circadian misalignment. Alertness profiles at work and degree of melatonin suppression may indicate degree of circadian disruption among workers. However, when considering lighting solutions at night, there are several factors that need consideration. Light measures based on biological effectiveness should be used rather than room illuminance giving better predictions of performance and long-term health among workers. Also, large individual differences in light sensitivity and preferences suggest not only to rely on common lighting alone but also to implement complementary individual lighting solutions at work. Lighting advice should consider shift scheduling characteristics such as speed of turnover and shift timing to guide decisions of preferred circadian phase influence. Lighting should also include the flexibility to be fit for morning, afternoon and evening work.

电灯减少了对自然光照亮工作场所的依赖。人类在遗传上倾向于白天（昼夜）并依赖日光来调节昼夜节律。轮班工作将迫使工人在非生理时间睡觉和工作，从而导致昼夜节律紊乱，从而影响工人的安全和健康。科学文献可用于轮班工作环境中的实践，通过减少昼夜节律失调来改善工作场所的安全、绩效和健康。工作中的警觉性概况和褪黑激素抑制程度可能表明工人的昼夜节律紊乱程度。然而，在考虑夜间照明解决方案时，有几个因素需要考虑。应使用基于生物有效性的光照测量而不是室内照度，以便更好地预测工人的表现和长期健康。此外，光敏感度和偏好的巨大个体差异表明，不仅要单独依靠普通照明，还要在工作中实施互补的个人照明解决方案。照明建议应考虑轮班安排特征，例如周转速度和轮班时间，以指导首选昼夜节律相位影响的决策。照明还应包括适合上午、下午和晚上工作的灵活性。光敏感度和偏好的巨大个体差异表明，不仅要单独依靠普通照明，还要在工作中实施互补的个人照明解决方案。照明建议应考虑轮班安排特征，例如周转速度和轮班时间，以指导首选昼夜节律相位影响的决策。照明还应包括适合上午、下午和晚上工作的灵活性。光敏感度和偏好的巨大个体差异表明，不仅要单独依靠普通照明，还要在工作中实施互补的个人照明解决方案。照明建议应考虑轮班安排特征，例如周转速度和轮班时间，以指导首选昼夜节律相位影响的决策。照明还应包括适合上午、下午和晚上工作的灵活性。