All businesses are grappling with knowledge networks--finding the right employees at the right time with the right knowledge and skills. The National Alliance of Business, MIT, and others have been working on an intriguing way to look at labor supply and demand issues called knowledge supply chain management. UPS (United Parcel Service) manages the knowledge supply chain through front-line and management training efforts and programs and tools like school-to-work, welfare-to-work, and community involvement. Each member of the knowledge supply chain--employers, colleges, trade schools, secondary schools, trainers, community groups, and government agencies--plays a role in the process of developing qualified workers, on both the demand and supply side of the equation. Under this framework, the labor market changes from one where educators push people out into the work world, regardless of their skills, to one where employers reach into the system to pull out people with the skills that better prepare them for personal and economic success. An UPS school-to-work program that deals with the front end of the supply chain has enrolled over 1,000 high school students. UPS has established welfare-to-work programs in conjunction with local governments in 40 locations across the country and helped more than 10,400 people from welfare to the workplace since January 1997. Two areas of training and development are especially critical to UPS: (1) technology training of front-line workers; and (2) development of managers and supervisors. (YLB)