This thesis explores to what extent prostitution policy can influence human trafficking for sexual purposes. It questions if criminalization of prostitution and legalization of prostitution can result in different outcomes, interfering with sex trafficking. This research is conducted as a comparative case study where Sweden illustrates the criminalization of prostitution and the Netherlands legalization of prostitution. This study will focus on three main theories to understand the complexity behind the issue and the background of the different policy designs. First, the three-pronged approach commonly used in trafficking legislation will be implemented as a framework to analyze the national action plans to combat human trafficking. Moreover, the prostitution policies will be explored from a sexual liberal and radical feminist perspective. The main findings are that both criminalization and legalization of prostitution affect the establishment of sex trafficking within the country. Sweden and the Netherlands share the aim of combatting human trafficking by implementing their prostitution policy. However, they disagree on how to do so effectively. The conclusion will suggest that both approaches can succeed if enough resources and funding are put towards the issue.