This study examines which psychosocial characteristics are associated with breast cancer survivors' partners' posttreatment needs for information and support. Eighty-four partners completed measures of coping, social support, illness representations, perceived stress, self-efficacy, anxiety, depression, and marital malfunctioning. Partners in need reported higher anxiety and depression, emotional illness representations, and emotion-oriented coping than partners without needs. Moreover, partners needing information and support took a more negative view on the timeline and consequences of their spouse's posttreatment condition. Interventions aimed at enhancing partners' posttreatment adjustment should focus on partners responding emotionally as well as perceiving their spouse's condition as a chronic condition