In addition to the primary duties of a Person Conducting a Business or Undertaking (PCBU), the WHS Act provides "additional" duties to those PCBU's that have or work in additional specific areas eg: designers, manufacturers, suppliers, importers etc. Click on the "select an option" button and chose the PCBU type that is required to comply with the "additional duties" described. For each definition, select an option from the dropdown below it Ensures the workplace environment, facilities, systems, equipment and means of entering and exiting the workplace and anything arising from the workplace are without risk to the health and safety of any person. Controllers of workplace. Manufacturers. Designers. Ensure that the plan, substance or structure is designed to be without risks to the health and safety of persons who use the plant, substance or structure for a purpose for which it was designed. Controllers of workplace. Manufacturers. Designers. Ensure that the plant, substance or structure is manufactured to be without risks to the health and safety of persons Controllers of workplace. Manufacturers. Designers