The organization aligns its procurement processes with its contractors so that hazards are identified and the OH&S risks are assessed and controlled where they come from three sources: contractor activities and operations that affect the organization; the organization's own activities and operations that affect contractor workers; and contractor activities and operations that affect other interested parties at the workplace. It makes sure contractors and their workers satisfy what its OH&S management system requires, and its procurement processes set and apply OH&S criteria for choosing contractors.
This control maps to 11 controls across 6 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.