This is not even limited to low-wage workers. A lot of GPs are "contractors" even though they work only for one employer with a provided office and set hours. The tax office has noticed in the last few years and indicated they're not happy.
Isnt that how many software developers on contract work who have 1 year contracts which are usually renewed.
Good write up of various contractor cases over the last year, here:
https://hallandwilcox.com.au/thinking/virdis-and-moffet/
"The cases also mark the ATO departure from its long-standing position regarding fee splitting arrangements in the medical field in ATO ID 2011/87, which was withdrawn on 23 August 2021 based on the decision in Moffet. Importantly, ATO ID 2011/87 reflected the ATO’s position for almost 10 years, and has been relied on by many businesses"