In this paper we propose that taking time before the work begins to develop agreements about how to work together in participatory action research enables researchers to directly address several ethical issues that can be problematic in this type of research: gaining fully informed consent; in-group confidentiality; cultural misconceptions; and protecting participants from risky self-disclosures. We begin by discussing some of these ethical challenges that can arise in participatory work, especially with young people. We argue that these issues are magnified and politicised in certain politico-cultural settings, and therefore are all the more important when working cross-culturally. Drawing on the findings of the lead writer's doctoral thesis, which sought to find a more relevant way of teaching moral education in a Malaysian setting by including the voices of young people, we show how participants responded to attempts to address these issues by creating a safe space in which to discuss sensitive topics through the use of a working agreement. Responses indicate that when such an agreement was in place, the young people in this Malaysian study experienced a greater sense of safety, greater encouragement to participate, and were more confident in their ability to solve ethical problems than in situations where there was no working agreement. Furthermore, the agreement enabled the researcher to be more aware of, and responsive to, the cultural context of the participants.