Ignorance is not bliss when it comes to your contractor's WHS practices
An area of workplace health & safety that is often overlooked is contractor management - and who is responsible for what.
But just because the segredation of responsibilties is not always obvious, doesn't mean you can turn a blind eye to the subject.
And whilst it's not all about what the legislation says, understanding the legalese is certainly a good place to start.
Under the Work Health Safety Act 2011, a Person Conducting a Business or Undertaking (PCBU) is primarily responsible for ensuring that the contractors’ employees are not exposed to health and safety risks at their place of work. Contractors are considered “workers” of the PCBU.
For more information on why you're only as safe as your contractors take a read of the attached article from Australian consultancy, GrowEQ. Very clear and concise.