The specter of baby-boomer retirements looms large, causing workforce shortages and knowledge-retention crises. Companies must manage mature workers as well as they manage younger ones, and design recruitment plans targeted at mature workers. Employers who listen to their older workers and respond to their needs with programs like flexible work arrangements and financial planning will often keep those employees working longer and more effectively. Twelve case studies explore how companies are meeting the challenge of approaching retirements, plus bottom-line strategies applicable to every business, and the big-picture insights of The Conference Board.