Worker's Liens Act 1893

Liens under subsection (1) of section 4 or under section 5 shall not, in cases other than those of workers employed by the owner or occupier, extend beyond that portion of the contract price payable by the owner or occupier under the contract for the purposes of which the work or materials are done, furnished, or manufactured and unpaid at the time when the owner or occupier shall receive notice of the lien or of its registration, whichever shall first happen, nor extend at all to cases where there is no such contract binding the owner or occupier to pay a contract price.