Purpose of the Study We examined the effect of daily stress, affect, and adult day service (ADS) use on the daily pain experience among caregivers of individuals with dementia (IWD). Participants were interviewed for 8 consecutive days. Caregivers utilized an ADS program on some days and provided care at home on other days. We hypothesized ADS use, care-related and noncare-related subjective stress, and affect would significantly influence and interact in ways to exacerbate or buffer the experience of daily pain. Design Participants were 173 family caregivers of IWDs using ADS more than 2 days per week. Participants with IWDs diagnosed with “mild cognitive impairment” were excluded. Daily telephone interviews assessed stress, affect, and pain. Methods Multilevel models were used to examine the relation between daily stress and daily pain and interaction effects of other daily experiences within the context of ADS use. Results Multilevel models revealed a significant relation between care-related subjective stress and daily bodily pain as well as an interaction between noncare-related subjective stress and daily bodily pain. ADS use and affect did not predict daily pain. Lagged effects revealed a significant interaction between yesterday’s ADS use and today’s positive affect on today’s bodily pain. Implications Findings suggest that further studies are warranted for understanding and controlling pain among caregivers. Addressing the physical health needs through pain management interventions, positive affect maximization, and ADS use may improve the overall wellbeing of caregiving dyads.