Despite the laws that protect employee rights, discrimination still persists in the workplace. This chapter examines individual-level factors that may influence subtle discrimination in the workplace. More specifically, it examines how social categories tend to perpetuate the use of stereotypes and reviews contemporary theories of subtle prejudice and discrimination. In addition, the chapter divides discrimination in the workplace along two dimensions, gateways and pathways, and examines the extent to which stereotypes, prejudice, and social categorization processes influence subtle discrimination at these critical junctures in an individual's career. Finally, it considers the extent to which individual differences may influence a person's propensity toward prejudice and discrimination.