FedEx workers at New Jersey facility vote against unionization
A FedEx delivery truck is seen in San Diego, California on Dec. 5, 2013. Photo by Mike Blake for Reuters.

Workers at a Newark, New Jersey, FedEx Freight facility voted against joining a union on Wednesday, in a blow to a concerted drive by the Teamsters to unionize FedEx Corp.

"We are proud of our employees for doing their homework on the union and making an informed decision against third-party interference," FedEx Freight said in a statement after the result was announced.  

The Teamsters have scored their first ever ballot victories against FedEx in the past month, targeting its trucking unit at a time when the trucking industry is suffering from a shortage of drivers and wages are on the rise.

Workers at two FedEx Freight facilities voted in October for collective bargaining, while drivers at two other facilities voted against unionization.

The Teamsters have withdrawn a petition for a ballot in Pennsylvania, but have votes scheduled at four other FedEx Freight facilities this month.

Unlike the unionized workforce at its larger rival United Parcel Service Inc, only FedEx's pilots are represented by a union.

(Reporting by Nick Carey; Editing by Kenneth Maxwell)