The Model Work Health and Safety Legislation Amendment (Offences and Penalties) 2023 includes amendments to the model WHS Act and model WHS Regulations including: 

• amending the model WHS Act to include a jurisdictional note and model penalties for the offence of industrial manslaughter 
• amending section 31 of the model WHS Act to clarify that an officer may commit a Category 1 offence under section 31 of the Act
• amending how WHS penalty provisions are expressed, increasing penalty amounts and providing for the indexation of penalty amounts
• inserting new provisions allowing for aggregation of conduct for body corporate PCBUs, and
• a technical amendment to regulations 55C and 55D (psychosocial regulations) to correct the placement of the regulation 9 note. 

The Explanatory Memorandum to the Amendment can be viewed here.