Pension Plans Face Underfunding Next Year NEW YORK (Reuters) - Only one in five corporate pension plans will have enough funds to fully cover liabilities next year if weak economic conditions persist, according to an analysis released by a consulting firm this week. ADVERTISEMENT The firm, Watson Wyatt & Co. (NYSE:WW - News), also said Monday if the weak stock market continues, the percentage of companies that will need to contribute to their pension plans next year could more than double to 65 percent. U.S. companies will have to pump billions of dollars into pension plans weakened by the current...