Stamford, Conn.--Intellectual capital-driven companies that are laying off employees to achieve short-term financial gains do so at their own peril, according to a new Gartner Group Inc. report. More than 90% of knowledge workers who are laid off or choose to leave a business during an economic downturn will be unavailable for hire in an upturn, according to the report, titled "It's 2001 and the Layoffs Have Just Begun! Where is Your IC Today?" Research director French Caldwell said in a statement: "You need to know how much intellectual capital you have in each account. Many managers are sending some of their best intellectual capital out the door forever because they do not have a good assessment of their companies' intellectual landscape."