Aims to examine police shift work exposure and the association of such exposure with adverse health outcomes such as disease, stress and depression. The impact of shift work on biomarkers of 
subclinical cardiovascular and metabolic diseases were examined; along with the interaction of objective measures of shift work and sleep quality on stress and subclinical disease biomarkers and work injuries. Standardised measures of psychological well-being, including stress, depression, 
anxiety, and post traumatic stress disorder (PTSD) were also investigated.