The state Supreme Court has ruled in favor of Allentown firefighters, finding that their union can negotiate the minimum number of firefighters on a shift because it has a direct impact on safety. In a unanimous decision Tuesday that affects municipalities with professional fire departments across Pennsylvania, the court rejected Allentown's argument that shift staffing was an issue for managers to decide because of its impact on city finances. The court found that the city had not presented convincing evidence that an arbitrator's award setting the minimum number of firefighters per shift at 25 unduly infringed on its managerial responsibilities.