Common law marriage and couple formation

The Current Population Survey is used to investigate effects of Common Law Marriage (CLM) on whether young US-born adults live in couples in the US CLM effects are identified through cross-state and time variation, as some states repealed CLM over the period examined. Analysis based on Gary Becker's marriage economics helps explain why CLM affects couple formation and does so differently depending on education, sex ratios, age, and parent status. CLM reduces in-couple residence, and more so for childless adults and where there are fewer men per woman. Effects are larger for college-educated men and women without college. CLM effects on likelihood of marriage and cohabitation and likelihood of being divorced if ever-married are also estimated.