Comunicação apresentada na Conferência "O Assédio Moral no Local de Trabalho: emergência de uma nova realidade", 29 e 30 de Novembro de 2007The aim of this paper is twofold: in the first place, reliability and validation analysis of the Portuguese version of the Negative Acts Questionnaire Revised, NAQ-R (Einarsen & Hoel, 2001) are presented; secondly, preliminary results concerning the incidence rates of workplace bullying in the Portuguese banking sector, using two different and complementary strategies are presented as well as the most frequent bullying behaviours. Gender, age, organizational and social status differences are also analyzed. As no validated instrument to map workplace bullying exists at the moment in Portugal, the need to fill this gap can be seen as the starting point of this investigation. Portuguese research in this field has been scarce, or even non existent till now, thus this study has an exploratory nature