PROS Network (Providers and Resources Offering Services to sex workers) participated in two studies in New York around the impact of policies that use of condoms as ‘evidence of prostitution’.

In 1999, the Swedish government embarked on an experiment in social engineering to end men’s practice of purchasing commercial sexual services. The government enacted a new law criminalising the purchase (but not the sale) of sex (Swedish Penal Code). It hoped that the fear of arrest and increased public stigma would convince men to change their sexual behaviour. The government also hoped that the law would force the estimated 1,850 to 3,000 women who sold sex in Sweden at that time to find another line of work.