Solving the productivity puzzle is a full-time job for many HR leaders. Trying to uncover underlying stressors in the day-to-day lives of workers, what drives them and what demoralizes them, is an ongoing process that can perplex even the most knowledgeable of mangers.

That being said, a recent report into workplace productivity may provide an answer. A lack of sleep could be impacting your employees’ wellbeing, according to research from global HR think-tank Reventure.