UNITED PARCEL SERVICE The world's largest shipping carrier is scaling back. UPS ( UPS)is laying off some 433 workers at a facility in northern, Kentucky beginning mid-March and ending in April. About a fourth of those losing their jobs are temporary workers, according to the company. The cuts come as UPS will no longer manage inventory and fill orders for online retailer Zulily Inc, a Seattle-based company that sells clothing and accessories for women and children. According to UBS, operations will continue at the facility, which will have a smaller workforce of about 150. Kentucky's is where the company has its largest air hub. UBS has invested $2 billion over recent years to expand its hub in Louisville.