“…There is scattered evidence on the role played by such devices on household consumption. Theoretical and empirical research have analyzed the role of extended family networks [Kotlikoff and Spivak, 1981; Attanasio and Rios-Rull, 2000], added worker effects [Stephens, 2002], the timing of durable purchases [Browning and Crossley, 2003], progressive income taxation [Mankiw andKimball, 1992, Auerbach andFeenberg, 2001, and Kniesner and Ziliak, 2002], personal bankruptcy laws [Fay, Hurst and White, 2002], insurance within the firm [Guiso, Pistaferri and Schivardi, 2003], and the role of government public policy programs, such as unemployment insurance [Engen and Gruber, 2001], Medicaid [Gruber and Yelowitz, 1999], AFDC [Gruber, 2000], and food stamps [Blundell and Pistaferri, 2003]. While we do not take a precise stand on the mechanisms (other than savings) that are available to smooth idiosyncratic shocks to income, we emphasize that our evidence can be used to uncover whether some of these mechanisms are actually at work, how important they are quantitatively, and how they differ across households and over time.…”