This study examines the relations between diversity climate, characterized by organizational fairness and organizational inclusion, and employees' work attitudes (i.e., job satisfaction and affective, normative and continuance commitment). It was proposed that the degree of perceived organizational support would mediate the relationships between diversity climate and employees' work attitudes (i.e., job satisfaction, affective commitment and normative commitment). Furthermore, employees' racioethnicities were hypothesized to moderate the relationships between diversity climate and work attitudes. Employees (N = 311) in organizations in Canada completed a self-report survey regarding their perceptions on the organization's diversity climate and organizational support, and their levels of job satisfaction and organizational commitment. Regression analyses revealed that diversity climate is positively related to job satisfaction, affective and normative commitment, and that perceived organizational support mediates the relationship between diversity climate and these employee attitudes. Contrary to what had been hypothesized, diversity climate is negatively associated with continuance commitment. Furthermore, racioethnicity generally did not moderate the relations between diversity climate and work attitudes.