Non Governmental Organizations have a mission to improve the conditions of the whole or a part of the local societies in the place where they are active. “Network for children’s rights” is a Greek NGO that mostly aims to fight for and ensure the appliance of children’s rights as these have been embodied in national and European Union legislation and international treaties. Its employees are working hard to fulfill their everyday tasks and serve the children members. The scope of this study is to seek for major obstacles in order to achieve feasible interventions within NGOs with the use of Participatory Design. PD methodology is considered a fruitful one to engage the employees and other stakeholders who are affected by a problematic situation into the following processes: 1) to co-research the situation inside the working, social, financial and legal context, 2) to express their feelings, opinions, ideas on how the situation can be improved according to their needs, 3) to co-design and evaluate the solution. To fulfill the scope, a PD study in the NCR was conducted. The outcome of the study as well as its whole process were evaluated. Two major obstacles were found. The first and most significant one has been the very small percentage of representation of the stakeholders of the NGO who participated in the study. The second one has been the lack of collaborative language games to ensure mutual understanding among participants. A researcher should pay extra attention to overcome these obstacles and future studies may provide with new tools that confront them.