In this two‐wave longitudinal, daily diary study that followed up with 421 Mexican American parent–adolescent dyads (adolescents: Mage = 15 years, 50% males) after 1 year, we investigated the contingency between parental stressors and adolescents' emotional support to family members. Adolescents provided support to their parents and other family members at similar rates, but adolescents were more likely to provide support to other family members than to their parents on days when parents experienced a family stressor. This pattern was especially pronounced in families with parents who reported physical symptoms and adolescents with a strong sense of family obligation. Adolescents' provision of emotional support was associated with same‐day feelings of role fulfillment, but not to their concurrent or long‐term psychological distress.