Australia does not have one law on sex work. It has eight, and they disagree with each other.
Cross a state border and the rules change completely. What counts as a legal, regulated occupation in one city can still carry a criminal charge a few hundred kilometres away. For a country that thinks of itself as fairly uniform, sex work is the sharpest reminder of how much a state line can matter.
The story starts in New South Wales. In 1995, the Disorderly Houses Amendment Act took brothels out of the criminal statutes and folded them into ordinary planning and health rules. Street-based work had already been largely decriminalised in 1979. NSW did not license the industry or build a special regulator to police it. It treated sex work, for the most part, as work. Nearly thirty years on, it is still the model that public health researchers and human rights bodies reach for when they argue for reform.
What decriminalisation actually changed
The NSW approach gave researchers a long run of data, and the findings are consistent. Kirby Institute surveillance in the state has repeatedly recorded very high condom use and very low rates of HIV among sex workers, among the best figures anywhere. Where the work itself is not a crime, people carry condoms without worrying they will be treated as evidence, test regularly, and report violence to police.
Amnesty International drew on this kind of evidence when it adopted a global policy in 2016 backing decriminalisation as the approach that best protects sex workers from abuse. The Lancet has published modelling estimating that decriminalisation could avert between a third and a half of new HIV infections among sex workers and their clients over a decade.
The mechanism is not complicated. If reporting an assault means confessing to a crime, most people stay quiet. Remove the crime and the silence lifts. That is the practical gap between decriminalisation and every model that keeps one foot in the criminal law.
The rest of the country catches up, slowly
For years, New South Wales stood alone. Then the map began to move.
Victoria passed the Sex Work Decriminalisation Act 2022 and brought it in over two stages. The first, on 10 May 2022, decriminalised street-based and independent work and pulled sex workers under the same anti-discrimination protections as any other worker. The second, on 1 December 2023, repealed the old Sex Work Act 1994 and swapped brothel licensing for standard business regulation. The licensing system it replaced had been criticised for years for splitting the industry into a small licensed tier and a much larger criminalised one.
Queensland went further and faster. The Criminal Code (Decriminalising Sex Work) and Other Legislation Amendment Act 2024 passed on 2 May 2024 and commenced on 2 August 2024. It abolished the Prostitution Licensing Authority, scrapped the requirement for larger operators to hold a licence, and stopped local councils writing their own rules to push the industry out. New offences were added for coercion and for involving children, but the everyday work stopped being a criminal matter.
Queensland is the live example, because the change is so recent. In Brisbane, advertising and services that once sat in a legal grey zone now operate in plain sight, and local Brisbane escorts directories sit online next to any other lawful business. The move from a licensing regime to ordinary business regulation is the same change New South Wales made in the 1990s, arriving three decades later.
Where the map still stops
Then there is the other half of the country.
In Western Australia, selling sex is not itself a crime, but a ring of surrounding offences remains on the books, and repeated attempts at reform have stalled. South Australia has some of the oldest sex work laws in the nation. The Summary Offences Act 1953 still criminalises soliciting and procurement, filed under offences against decency and morality. Bill after bill to change this has been introduced and voted down, the most recent attempts failing by only a few members.
The patchwork has real consequences. A worker operating lawfully in Brisbane or Sydney can be committing an offence doing the same thing in Adelaide or Perth. The safety gains that the evidence ties to decriminalisation simply do not reach the states that have kept the criminal law in place.
What reform did not fix
Decriminalisation is not the finish line, and the people who campaigned for it are usually the first to say so.
Taking away criminal penalties does not take away stigma. Migrant workers, who often have the most to lose from any contact with authorities, remain among the most exposed. Even in Queensland, the 2024 reforms left loose ends: old charges and convictions are not wiped automatically, and some related rules were held over for a later bill. Changing a statute is quicker than changing how an industry is treated by banks, landlords, platforms and the public.
The honest reading is that Australia has proved something and is still only half done. The evidence that decriminalisation improves safety and health is about as settled as social policy evidence gets, and three of the most populous states have now acted on it. The rest have not. Until they do, where you happen to be standing when you go to work still decides whether the law sees a worker or a criminal.
