The Division serves more than 250,000 members throughout the United States who work at UPS and UPS Freight. UPS is the single largest employer in the Teamsters Union. The Division is responsible for ensuring that management abides by the UPS and UPS Freight National Master Agreements. The UPS contract is the largest collective bargaining agreement in North America. The Division represents UPS package car drivers, air drivers, feeder drivers, part-time loaders, unloaders, sorters and clerks. It also represents more than 12,000 UPS Freight drivers and dockworkers, and 1,300 workers at UPS Cartage Services Inc.