Compiled By Jill Jusko Employees who stayed put during the recent job shortages may be reaping the reward of greater job security today, as the number of short-tenured managers losing their jobs rose by 50% in 2001, says international outplacement firm Challenger, Gray & Christmas Inc. The average tenure among the discharged fell to a record low of 4.8 years in 2001, according to the outplacement firm's Job Market Index. Until 2001 the average tenure of discharged managers was 8.5 years. "We may be witnessing a new type of recession -- a New Economy recession -- in which productivity actually increases and competition for customers remains intense. As a result, companies that want to survive must retain their best employees, and that often means the most experienced," says Challenger CEO John A. Challenger. On average in 2001, 26% of those discharged were employed fewer than 24 months, the index indicates. That is 50% higher than the previous record of 17% set in 2000 and significantly higher than any other year tracked by the Challenger firm since 1986.