generous cash transfer. Anthony Atkinson’s (1996) “participation income” complements existing social programs and the minimum wage and is conditioned on a form of “social” participation— contributing to society through employment, education, childcare, or other activities. Across this broad spectrum, however, two common traits characterize and differentiate universal basic income-type pro-grams from others: Universality —or very large—coverage of individuals in society Unconditionality —or very broadly conditioned provision—as is the case of Atkinson
. Robustness: Alternative Definition of Downward and Upward Shocks D. Implications VIII. Conclusion Appendix. Sample Selection References Tables 1. Changes in Household Marital Status by Changes in Husband’s Earnings 2. Summary Statistics 3. Smoothing Estimates—Independent Variable: Total Shock to Earnings, Δln y H 4. Spousal Labor Participation—Income Smoothing Estimates Independent Variable—Total Shock to Earnings, Δln y H —Instrumented 5. Effect of Husband’s Earnings on Spousal Labor at the Intensive Margin—Income Smoothing Estimates