It provides evidence for the necessity of decriminalisation of sex work, the involvement of sex workers in developing policy, and the empowerment and self-determination of sex work communities as a fundamental part of the fight against HIV. This resource is based on the WHO, UNFPA, UNAIDS and NSWP 2012 recommendations on HIV and Sex Work. A 24-page Smart Guide to the SWIT is also available. The full name of the SWIT is Implementing Comprehensive HIV/STI Programmes with Sex Workers: Practical Approaches from Collaborative Interventions. It was produced in collaboration with sex worker-led organisations by WHO, UNFPA, UNAIDS, NSWP, The World Bank and UNDP. In 2015, NSWP reflected on the development and impact of the SWIT in the SWIT Case Study.