INDIANAPOLIS (AP) – A union attorney says it welcomes the opportunity to argue its case against the state’s right-to-work law before the Indiana Supreme Court.

Dale Pierson of Local 150 of the International Union of Operating Engineers says the 2012 law passed by the Indiana General Assembly deprives unions of fair compensation for services they provides to members of their bargaining units.

A Lake County judge sided with Local 150 last week and declared the law unconstitutional for barring the delivery of services “without just compensation.”

The Indiana Attorney General’s office appealed that ruling Thursday.

The state prevailed in a federal court challenge of the law brought by Local 150. Pierson says the 7th U.S. Circuit Court of Appeals heard oral arguments in Chicago Thursday on its appeal of the federal court decision.