2.5.3. Voluntary Standards

For general policies, voluntary standards are useful for widespread adoption of a TWH approach. In 2018, the International Organization for Standardization (ISO) finalized the voluntary standard *ISO 45001—Occupational Health and Safety*. Although the guidance does not specify requirements for responsible business practices, it enables integration of OSH management systems with other systems, including those related to worker well-being [39]. Another related policy effort well-aligned with the TWH approach is the National Standard of Canada for Psychological Health and Safety in the Workplace; this could serve as a useful template for other nations seeking to improve working conditions. Adoption of the Canadian voluntary standard, developed in 2013, has increased and the standard has served as useful guidance internationally [40].
