This study examined the relationship between job satisfaction, job stress and the big five personality traits on organisational and interpersonal workplace deviance among employees of a construction consultancy organisation in Singapore. Gender differences and organisational tenure differences were also analysed. Results suggest that while job stress directly predicted deviance, job satisfaction did not. Extraversion also had a direct effect on workplace deviance and a significant buffering effect on job stress and interpersonal deviance. Overall, males exhibited higher workplace deviance. Those who have worked for over five years in the company exhibited higher scores on organisational deviance but not interpersonal workplace deviance.