文摘
While there is a large literature on how individual incomes move over time, we know much less about couples-joint income dynamics. Current research on individual income dynamics has increasingly considered heterogeneity—do all individuals-incomes evolve in the same way, or does a particular individual’s income evolve in the same way throughout their life? This paper considers the analogous questions for couples—do all couples-incomes move together in the same way, or does a particular couple’s incomes move together in the same way throughout their marriage? In particular, I find evidence of correlated volatility; husbands with volatile incomes tend to have wives with volatile ones. I find weaker evidence for heterogeneity in the correlation of husbands-and wives-income changes, with some couples incomes moving together while others moving in opposite directions. Couples-income changes are negatively correlated early in marriage, particularly when young children are present, and become more positively correlated over time.