Introduction: The feeling of happiness plays an important role in the quality of life of individuals and the finding of the factors associated with this feeling is important. Therefore, the present study was aimed to develop a model of happiness based on personality traits, emotional intelligence, attachment styles, voluntary activities and demographic characteristics. Method: The research method is descriptive-correlational. The statistical population consisted of 12373 women employed in organizations of Lorestan province. 400 people were selected by stratified random sampling based on Cochran formula. Data were collected through NEO Personality Scale, Shirin Emotional Intelligence, Collins & Reid Attachment Inventory, Voluntary Activitie...