This study provides an in-depth understanding of the causes and consequences of sleep loss and fatigue in the coral reef tourism industry. Utilizing a qualitative methodology, data were obtained from eight focus groups conducted in Far North Queensland with 42 reef tourism employees. Analysis involved identifying and inductively coding any emergent categories of the causes and consequences of sleep loss and fatigue. Findings are applied to Baum, Kralj, Robinson, and Solnet's (2016) taxonomy of tourism research to highlight where the causes of sleep loss and fatigue originate. This reflects individual, occupational and industry-level causes of sleep loss and fatigue which workers indicate have consequences for their wellbeing, and the safety and efficacy of their operations. Implications for the broader tourism industry are discussed.