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.
Sexual slavery
Commercial sexual exploitation of adults (often referred to as "sex trafficking") is a type of human trafficking involving the recruitment, transportation, transfer, harbouring or receipt of people, by coercive or abusive means for the purpose of sexual exploitation. Commercial sexual exploitation is not the only form of human trafficking and estimates vary as to the percentage of human trafficking which is for the purpose of transporting someone into sexual slavery.