The aim is to assess the efficacy of a multi-component intervention on STI prevention and condom use in female entertainment workers and men frequenting EEs in Singapore, using a quasi-experimental design. The hypothesis is that a comprehensive sexual health promotion program which incorporates behavioural (STI/HIV education, condom use and condom negotiation skills), biomedical (STI screening and treatment services) and structural components (free access to condoms) to female entertainment workers as well as behavioural (sexual well-being and safe sex edutainment) and structural (free access to condoms) interventions to men patronising EEs in Singapore will achieve an increase in condom use (for both target groups) and a reduction in incident STIs (only for female EE workers).