Even though the constitution of India guarantees equality and equity to every citizen, sex workers are one highly marginalised group. Sex work is considered a sexual activity in return for money or material goods. It is very diverse in nature and the workers. This chapter provides an overview of sex work from a broader perspective. It includes the definition of sex work, types of sex work, theories of sex work, reasons for entering into sex work, consequences of sex work, the status of family and child care, sex work in the digital era and men and LGBTQIA+ in sex work. It also includes the global scenario of sex work. The chapter provides a comprehensive idea of sex work.