The traditional source of geographical mobility data, cross-sectional surveys, indicates that slightly less than 20 percent of Americans change their place of residence each year. Cross-sectional surveys such as the Current Population Survey (CPS) provide characteristics of movers only at the time of interview, i.e., after a move has been made. They do not provide information on the context in which moves were undertaken, only information subsequent to moving. The Survey of Income and Program Participation (SIPP) provides longitudinal or time series data, and is designed to account for, among other things, a variety of life course transitions over time. SIPP panels, which trace individuals over 2 1/2-year periods of time, provide ideal vehicles for analyzing the joint-incidence of life events such as loss of a job, retirement, and marriage, and various forms of geographical mobility: moves between dwelling units, between labor markets, etc. The paper reviews previous research on the relationships between geographical mobility and life course phases and individual life course events undertaken with both cross-sectional and longitudinal data, and presents initial findings from an extract file of the 1984 SIPP panel.