A PCBU must not direct or allow a worker to carry out high risk work that needs a high risk work licence unless it sees written evidence from the worker that they hold the relevant licence. Work such as operating industrial trucks and some cranes, or scaffold and rigging work, needs a licence. Schedule 3 of the WHS Regulations sets out the classes of licence and the plant involved, and Schedule 4 the competency requirements.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.