The Off Hours Division provides the DPW with continuous 24-hour response on a regular and emergency basis. The off-hours employees respond to a variety of emergencies: initial after-hours sewer complaints, fallen trees and tree limbs, litter pickup, building security, storm-related cleanup and coordination with the Cambridge Police and Fire Departments in response to accidents and other emergencies. The importance of this Division is highlighted by the ability of its personnel to respond rapidly to the many and varied city-wide emergencies. There are three off-hour shifts: early evening, Monday through Friday (3:00 p.m. to 11:00 p.m.); late evening/early morning, Sunday through Friday (11:00 p.m. to 7:00 a.m.); and the weekend shift. This schedules ensures that DPW personnel will be available at all times to respond to City emergencies.