The UN Security Council, as ‘parent body’ of the two ad hoc Tribunals, never introduced explicit rules on how to compensate accused persons for violations of their rights imputable to the Tribunals' organs. Notwithstanding the absence of such rules, a series of decisions by ICTYand ICTR chambers show the willingness of these institutions to address such violations when they occur. In doing so, the Tribunals appear to have followed some of the same principles on responsibility of international organizations as are being elaborated by the International Law Commission (ILC). By analysing these parallel processes, the author suggests that the elaboration of rules by the ad hoc Tribunals in the field of human rights violations and the codification by the ILC of rules on international responsibility, although distinct in aim and scope, might mutually benefit each other andshed some light on the difficulties of applying such principles in practice.