Separate and Unequal: The Effect of Unequal Access to Employment-Based Health Insurance on Same-Sex and Different-Sex Unmarried Couples
By M.V. Lee Badgett, Michael A. Ash
This study finds that unmarried couples are significantly less likely to have health insurance than married people. The number of uninsured people in unmarried couples would drop significantly if employers offered health insurance to domestic partners. However, employers would experience only a small increase in health insurance enrollment and costs if they offered partner coverage.