The purpose of this article is to investigate the relationship between spousalcare-giving and declines in functioning and self-rated health among oldercare-givers. The authors used data from the 2000 and 2002 waves of the UnitedStates Health and Retirement Study, a biennial longitudinal survey of anationally representative cohort of adults aged 50 or more years. Two outcomeswere examined, declines in functioning and declines in self-rated health.Care-givers were classified into three groups: no care-giving, less than 14hours of care-giving per week, and 14 or more hours care-giving per week. Toassess declines in functioning, two summary scores were created of limitationsin basic and instrumental Activities of Daily Living. To assess declines inself-rated health, we compared responses from 2000 and 2002. In the fullyadjusted models, care-giving hours did not have an independent effect ondeclines in functioning or self-rated health. The relationship betweencare-giving hours and declines in functioning and self-rated health is probablyattributable to socio-demographic characteristics, mainly age. The findingssuggest that spousal care-giving does not of itself harm functional health orperceived health among older adult care-givers. Understanding the differentialeffects of these socio-economic characteristics with care-giving hours on healthwill be useful in promoting the health of older adult care-givers and treatingtheir disorders.