In this episode host Mark Reggers and guest Jackii Shepherd, Safe Work Australia’s Director of Occupational Hygiene Policy and Team Manager for their Workplace Exposure Standards Review continue where they left off and resume their discussion on the exposure standards review process. Under the model work health and safety laws, a workplace exposure standard is an airborne concentration of a chemical that a worker cannot be exposed above in the workplace to protect them from harm. However, because science and technology are always evolving, so too does our understanding of chemicals, the way we use them and their impacts on health; as a result, a review process is essential.