==== Front Innov Aging Innov Aging innovateage Innovation in Aging 2399-5300 Oxford University Press US 10.1093/geroni/igaa057.054 igaa057.054 Abstracts Session 2809 (Paper) End of Life | Pain Management AcademicSubjects/SOC02600 Challenges Related to Informal Care Partners’ Involvement in End-of-Life-Care in Assisted Living Perkins Molly 1 Vandenberg Ann 2 Kemp Candace 3 Ball Mary 3 Jungerman Joanna 1 Abken Elise 2 Bender Alexis 1 1 Emory University, Atlanta, Georgia, United States 2 Emory University School of Medicine, Atlanta, Georgia, United States 3 Georgia State University, Atlanta, Georgia, United States 2020 16 12 2020 16 12 2020 4 Suppl 1 Program Abstracts from The GSA 2020 Annual Scientific Meeting “Turning 75: Why Age Matters”16 17 © The Author(s) 2020. Published by Oxford University Press on behalf of The Gerontological Society of America.2020This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.Abstract Limited empirical evidence suggests that caregiver burden is greater for informal care partners (family and friends) in assisted living (AL) compared with other long-term care settings, particularly within context of end of life. Using qualitative data from a larger 5-year, 7-site study of end-of-life care in AL funded by the National Institute on Aging (R01AG047408), we investigate informal care partners’ involvement in end-of-life care and identify challenges related to informal caregiving that might contribute to care burden. Grounded theory analysis of ethnographic data and in-depth interviews (average interview length = 97 minutes) with 59 racially and ethnically diverse informal care partners (mean age = 60) shows that informal care partner involvement in end-of-life care varies across participants and over time and is shaped by multiple intersecting social and structural determinants. At individual levels, these include many personal, situational, and relational factors. Personal factors include but are not limited to care partners’ own physical and mental health and material resources (e.g., ability to pay for supplementary care). Situational and relational factors include care partners’ awareness (or lack thereof) of residents’ impending death and the quality of the caregiving relationship. AL and wider community-level factors include understaffing, staff turnover, inadequate hospice support, and lack of access to these services. We find that informal care partners navigate these caregiving challenges through a basic social process we conceptualize as “negotiating risks.” Strategies for easing caregiver burden and improving informal care partner and resident quality of life at end of life are implicated.