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Working Paper
Why Do Households Save and Work?
This paper develops and estimates a dynamic life-cycle model to quantify why households save and work. The model incorporates multiple sources of risk—health, marital status, wages, medical expenses and mortality—as well as endogenous labor supply and human capital accumulation, retirement, and bequest motives at the death of the first and last household member. We estimate it using PSID and HRS data for the 1941–1945 cohort via the Method of Simulated Moments. Eliminating bequest motives reduces aggregate wealth by 23.8% and labor earnings by 1.2%; removing medical expenses lowers them ...
Working Paper
Why Do Households Save and Work?
This paper quantifies why households save and work using a life-cycle model that incorporates wage risk, endogenous labor supply of both spouses, marital transitions, health, medical expenses, mortality, and bequest motives at the death of the first and last household member. We estimate it using PSID and HRS data and conduct counterfactuals to assess the quantitative role of individual mechanisms. Precautionary saving against wage risk is smaller than in models that abstract from labor supply and within-household insurance. Bequest motives and medical expenses remain important drivers of ...