Australia Model Code of Practice: Managing Psychosocial Hazards at Work 5.1b: 5.1 Select reasonably practicable controls and weigh cost properly

For each possible control decide whether it is reasonably practicable, considering all relevant matters: the likelihood of the hazard or risk occurring, the degree of harm that might result, the availability and suitability of ways to eliminate or minimise it, what the person knows or ought reasonably to know about the hazard and the ways of controlling it, and, only after assessing the risk and the options, the cost, including whether cost is grossly disproportionate to the risk. The greater the risk the more must be done, often using more than one control, and the aim is to keep lowering likelihood and degree of harm until further steps are not reasonably practicable. Where a control is grossly disproportionate in cost the PCBU must still use a cheaper way to minimise the risk. Reasonable practicability is judged objectively, not by capacity to pay, and a price or service target cannot override the duty.