This chapter presents an empirical inquiry into how construction project features (CPFs) influence accident occurrence. It highlights the accident causal influence of CPFs and the gap in the existing literature in relation to how CPFs influence accident occurrence. This is followed by a review of accident causation models that enable a conceptual view of how CPFs influence accident occurrence. Accident causation models and theories attempt to explain how accidents occur in reality. Prominent amongst these are energy transfer models, individual/human models/theories, and systems models. Energy transfer models consider causation of accidents as the release of uncontrolled energy from a source, where the energy is then conveyed through a path to the victim. Individual/human models/theories emphasise the direct contribution of individuals to accident occurrence. Systems models highlight the role of the organisation and its systems in the occurrence of accidents. They are concerned with the underlying causes of accidents, the induced proximate causes, and the complex interactions between them.