Migrant sex work
Because of their illegal and vulnerable economic status, some migrant sex workers may find themselves in situations where coercion and forced sex work may be present. Under international legal definitions of human trafficking, forced and coercive forms of sex work are considered to be instances of involuntary sex trafficking. However, many scholars caution against categorizing sex workers as either completely voluntary or completely involuntary. They often argue that sex work, like other forms of labor, can span a spectrum between the two extremes, with most circumstances falling in the middle through various labor rights violations. Nevertheless, the vulnerability of migrant sex workers can make them susceptible to exploitative or coercive labor practices that can resemble or be human trafficking.
Human trafficking
Abolitionists who seek an end to sex trafficking explain the nature of sex trafficking as an economic supply and demand model. In this model, male demand for prostitutes leads to a market of sex work, which, in turn, fosters sex trafficking, the illegal trade and coercion of people into sex work, and pimps and traffickers become 'distributors' who supply people to be sexually exploited. The demand for sex trafficking can also be facilitated by some pimps' and traffickers' desire for women whom they can exploit as workers because they do not require wages, safe working circumstances, and agency in choosing customers.