There have been some recent court cases, sponsored by the unions, seeking to include full time benefits to subbies, but it's all a bit hand-wavy and, on the whole, people working with an ABN are not yet equivalent to full time employees.
Refer to the Casual Employment Information Statement (CEIS)[1] and due-to-be-released-on-6-December-2023 Fixed Term Contract Information Statement (FTCIS)[2].
I don't think we have much protection for these types of labour hirec(as we'd call them in Aus) arrangements