The WHS Act requires that a person who conducts a business or undertaking (PCBU) ensures the health and safety of workers engaged by the PCBU while the workers are at work in the business or undertaking, so far as is reasonably practicable. The PCBU is required to manage risks by:
eliminating risks to health and safety so far as is reasonably practicable
if elimination is not reasonably practicable, minimising the risks so far as is reasonably practicable.