The United Parcel Service has announced that it is offering buyouts to full-time drivers as part of its execution of "the largest network reconfiguration" in the company's history.

Parcel giant UPS said on Thursday it will offer voluntary buyouts to its full-time U.S. drivers as part of the largest network reconfiguration in its history — a sweeping overhaul that includes cutting 20,

"Our members cannot be bought off and we will not allow them to be sold out," Teamsters General President Sean M. O'Brien said in a statement. "The Teamsters are prepared to fight UPS on every front with every available resource to shut down this illegal buyout program."