The workbook, Fundamentals of Total Worker Health® Approaches: Essential Elements for Advancing Worker Safety, Health, and Well-being,[20] prioritizes a hazard-free work environment for all workers and applies a modern prevention approach—consistent with traditional occupational safety and health prevention principles—that recognizes that job-related factors can have an important impact on the well-being of workers, their families, and their communities.[26] Fundamentals of Total Worker Health Approaches: Essential Elements for Advancing Worker Safety, Health, and Well-Being builds upon the work of experts in the previous publication, Essential Elements of Effective Workplace Programs, with more recent research, resources, and recommendations that reflect the evolution and progression of TWH itself as a concept. The Fundamentals of TWH Approaches workbook focuses on five Defining Elements of TWH: