Workplace incivility – in the form of disrespect, rudeness and/or discourteousness at work is ubiquitous, proving very costly to both individuals and organisations. Despite this, very few studies have taken a preventive approach to the workplace incivility epidemic by exploring ways of promoting the positive side, i.e., civility, at work. The purpose of this study was to investigate positive leader behaviours (those associated with transformational leadership and ethical leadership) as an antecedent of workplace relational civility and explore the moderating effect of employee perceptions of norms for respect on these relationships. 181 full-time workers completed an online survey at one time-point assessing perceptions of their current manager/supervisors transformational and ethical leader behaviours, perceptions of norms for respect at work, and perceptions of workplace relational civility. Results indicate that transformational leadership, ethical leadership, and norms for respect all positively and significantly relate to workplace relational civility. Employee perceptions of norms for respect positively moderated the relationship between transformational leadership and workplace relational civility, but not the relationship between ethical leadership and workplace relational civility. Findings suggest that positive leader behaviours are important for fostering relational civility at work, complementing existing incivility literature. Organisations are encouraged to work to improve relational civility at work by enhancing their managers and/or supervisors positive leader behaviours and improving employee perceptions of norms for respect at work.