She has published, among others, on:
gender bias in the practice of UN human rights bodies and the European Court of Human Rights
States' obligations to address domestic violence
pregnancy and childbirth rights
gender mainstreaming in international law
epistemic injustice in legal proceedings
Van Leeuwen is an associate professor of public law at Bogazici University in Istanbul, Turkey, and is also the Dutch expert on gender equality of the European Equality Law Network. Since 2009, Fleur has been on the editorial board of the academic Journal of Gender Studies.