Government policies affect labor supply and financial decisions in numerous ways. The tax code alters incentives for earning and reporting income, and government spending programs influence household consumption decisions. This dissertation consists of three empirical investigations quantifying the impact of particular government policies on household decisions. The U.S. tax treatment of married couples changed in 1948, from a system in which each spouse paid taxes on his or her own income to a system in which a married couple is taxed as a unit. Chapter 1 investigates how this conversion affects labor supply and the division of income between spouses. It utilizes a natural experiment created by cross-state variation in property laws: Tho...