Des Moines Mailers Union, Teamsters Local No. 358 v. National Labor Relations Board, Des Moines Register and Tribune Company, Intervenor on Appeal

COLLOTON, Circuit Judge.

The Des Moines Mailers Union, Teamsters Local No. 358 (“the Union”), petitions for review of an order of the National Labor Relations Board (“Board”) dismissing an unfair labor practice complaint against the Des Moines Register and Tribune Company (“the Register”). We deny the petition for review.

This dispute concerns negotiations over a new collective-bargaining agreement between the Register and the Union to succeed an agreement that covered a period from July 19, 1998, through July 18, 2001. The expired agreement included a provision that the Union says guaranteed…