More than 100 truck drivers who work for an Australian logistics firm at the Port of New York and New Jersey have voted to join the Teamsters, the union said.

Teamsters employees at ABF Freight System approved a new master contract, but additional talks will be required later this month because some side agreements were rejected.

The Teamsters union and UPS Inc. said they are resuming talks on rejected supplemental agreements to a master contract for the Package division that won rank-and-file approval last week, and the two are trying to reach a new tentative deal for workers in UPS’ Freight division.

Leaders of the Teamsters union last week said they approved a tentative five-year contract agreement with ABF Freight System that includes a 7% pay cut, setting the stage for rank-and-file voting to begin June 3.

Union leaders of more than 300 Teamsters locals approved tentative contracts last week covering 250,000 UPS Inc. package and freight workers, who stand to receive pay raises, benefits enhancements and new on-the-job protection.

As contract negotiations resume this week, UPS Inc. remains “confident” that a new contract can be reached in advance of the scheduled July 31 expiration of the agreement that covers a total of 250,000 Teamster package and freight workers.

The Teamsters union said it has reached a tentative three-year agreement with retail giant Costco.

ABF Freight and the Teamsters union announced they expect to begin negotiations on a new collective bargaining agreement Dec. 18.

Officials of less-than-truckload carrier ABF Freight System said they have notified the Teamsters union they want to negotiate directly on a new labor contract next year and not as part of an industry group.

The Teamsters union and UPS Inc. agreed this week to begin negotiations in late September on national UPS Inc. and UPS Freight contracts covering about 250,000 union members nationwide.