The Medford (Oregon) Firefighters Association and the City of Medford reached a stalemate while negotiating a collective bargaining agreement. They unsuccessfully tried to mediate their dispute. Pursuant to state law, the Oregon Employment Relations Board appointed an arbitrator, who held a hearing, prepared an agreement, and submitted it to the parties. The firefighters petitioned the circuit court for a writ of mandamus when the city refused to sign the agreement. The city claimed that the state law providing for binding arbitration was unconstitutional. Can the state legislature constitutionally delegate legislative power to a private person as an arbitrator?