This global policy brief summarises the research on the decriminalisation of third parties. It sets out in detail why NSWP and its members call for the decriminalisation of third parties. It explores some of the key harms that are caused to sex workers as a result of the criminalisation of third parties. The paper concludes by reviewing available evidence, showing that the decriminalisation of third parties protects sex workers rights, enabling them to challenge abusive and exploitative working conditions and exert greater control over their working environment. A community guide is available here.