The content analysis identified 8 main categories: (a) society, (b) organization, (c) project management, (d) supervision,(e) contractor, (f) site condition, (g) work group, and (h) individual characteristics. The review highlighted the importance of more distal factors, e.g., society and organization, and project management, that may contribute to reducing the likelihood of unsafe behaviors and accidents through the promotion of site
condition and individual features (as proximal factors).