The purpose of this paper is to describe the rationale, development, and psychometric properties of a multidimensional mobbing scale: the QAM 1.6. It is a self-report questionnaire that contains 54 items in a five-point Likert response scale. The questionnaire includes 13 dimensions for exploring different behaviours related to mobbing, harassment and emotional abuse in the workplace, and examine individual reactions to mobbing. In this paper we analyze the reliability, validity and dimensionality of the QAM 1.6 using data from a sample of 1067 workers from different sectors. It is concluded that the questionnaire is capable of discriminating between different levels of mobbing at work and can be considered a valuable instrument to examine mobbing at individual and organizational level. Keywords: mobbing, perception, measurement, questionnaires.