Millions of workers 'churning' in rocky healthcare system.
D000328:Adult; D000367:Age Factors; D003710:Demography; D006630:Hispanic or Latino / Q000706:statistics & numerical data; D006801:Humans; D019458:Insurance Coverage / Q000706:statistics & numerical data*; D017057:Medically Uninsured / Q000208:ethnology / Q000706:statistics & numerical data*; D008875:Middle Aged; D011203:Poverty / Q000208:ethnology; D012959:Socioeconomic Factors; D014481:United States