This paper analyses data from a 3-year prospective study to understand the factors associated with becoming a caregiver to a person with a chronic illness and examines the dynamics among caregivers over time. A total of 1485 participants were drawn from a study conducted in the slums of Nairobi, Kenya. Two waves of data collected in 2006 for the baseline and a follow-up in 2009 were used. Information on the demographic, self-reported health and socioeconomic characteristics such as education, sources of livelihood and employment status was used.