How much unfunded liability is woven into corporate benefit plans?
D000368:Aged; D003625:Data Collection; D006264:Health Benefit Plans, Employee / Q000331:legislation & jurisprudence*; D006801:Humans; D007221:Industry; D007348:Insurance, Health / Q000331:legislation & jurisprudence*; D010415:Pensions; D012941:Social Responsibility; D014481:United States