The study reported here determined that a national sample of single mothers had no health care coverage for an average of 9.35 months during a 32-month period during and after the Great Recession that began in December 2007 and ended in June 2009. Using comprehensively defined employment problems, it also found that adequately employed single mothers had the fewest months without health care coverage (M = 4.36), which more than doubled for those who experienced unemployment or involuntary gaps in employment, and tripled for those who experienced underemployment. The multivariate results confirm that employment problems place single mothers at a high risk of lacking health insurance. Implications for health care policy are discussed.