A seven-year dispute about wages for permanently injured Yonkers firefighters found its way to New York’s highest court on Wednesday, after the city in 2015 extinguished night differential, check-in pay, and holiday pay that a union lawyer says they are entitled to.

Attorney Richard S. Corenthal of Archer, Byington, Glennon & Levine made arguments on behalf of the firefighters’ union, asking the Court of Appeals to overturn rulings of two lower courts.