The model laws are amended from time to time. Amendments to the model laws do not automatically apply in a jurisdiction. For amendments to the model WHS Act and model WHS Regulations to have effect in a jurisdiction, they must be enacted in that jurisdiction. If you want to know what amendments have been enacted in a particular jurisdiction, you can check the WHS legislation on the relevant official legislation database. For example, to check the Commonwealth WHS Act and Regulations and associated amending instruments, please refer to the Federal Register of Legislation.