Maria Grazia Giammarinaro has made significant contributions to the United Nations Convention against Transnational Organized Crime (UNTOC) and its protocols, particularly in the area of human trafficking. As a former UN Special Rapporteur on Trafficking in Persons, especially in Women and Children, she has been instrumental in advocating for the rights of victims and enhancing international cooperation to combat trafficking.

Her work has emphasized the importance of a human rights-based approach to tackling trafficking in persons, urging member states to align their national laws with the principles outlined in the UNTOC. Giammarinaro has also focused on the need for comprehensive data collection and research to inform policy and practice, as well as the importance of addressing the root causes of trafficking, such as poverty, inequality, and gender discrimination.

Moreover, she has contributed to the development of guidelines and best practices for the implementation of the UNTOC and its protocols, aiming to strengthen legal frameworks and improve victim support services across countries. Her advocacy has raised awareness about the complexities of human trafficking and the necessity for a coordinated global response.

For more detailed information on her contributions, you can visit the UN's official website or specific reports detailing her work in relation to the UNTOC.