A former BNSF Railway Co. laborer’s claim he was fired after reporting his workplace injury is back on track.

The U.S. Court of Appeals for the Ninth Circuit Jan. 30 found Judge Donald Molloy of the U.S. District Court for the District of Montana misinformed a jury when he told them BNSF couldn’t be liable under the Federal Railroad Safety Act for the worker’s termination if it had an “honest belief” he violated company safety rules.

Martin Frost had worked...