Amalgamated Transit Union v. Tri-County Metro. Transp. Dist. of Or.

*333Tri-County Metropolitan Transportation District of Oregon (TriMet) petitions for judicial review of a final order of the Employment Relations Board (ERB) in favor of Amalgamated Transit Union, Division 757 (ATU). In that order, ERB concluded that TriMet had violated ORS 243.672(1)(g), which establishes that a public employer commits an unfair labor practice if it violates an agreement to arbitrate, when it refused to arbitrate a grievance concerning TriMet's decision to enter into contracts with nonunion shuttlebus operators. We review ERB's findings *52of fact for substantial evidence and its…