Description: Euclid Hospital is one of the regional hospitals in the Cleveland Clinic Enterprise. Euclid Hospital has 10 operating rooms, with about a dozen physicians who have block time.We were experiencing problems with block utilization which in turn was causing issues with efficiencies including staff scheduling, retention, and room utilization for an eight hour period. Our goal is to achieve at least 80% utilization of each of the OR rooms.The team consisted of Nursing leadership, Surgical Operations personal, Continuous Improvement personal.Preparation and planning; We identified that cases were being spread out over 7-10 rooms for 0730 case start, but often by noon, only a few rooms were still running. A retrospective review looked at physician block time utilization, as this directly has an affect on nurse scheduling. It was clearly identified that a few physicians were allocated too much block time and others were not allocated enough. Assessment;We created visual management boards and placed them in a common area to illustrate. We worked with Surgical operations to evaluate reallocating physician block time based on this historical information and noted the percent utilized.Implementation; Surgeons were notified and we were able to reallocate times and right size the operating room to 5 rooms, supporting more consistently achieving 80% utilization of the room for 8 hours. Block utilization and Outcome, The 5 rooms were being utilized more consistently around 80%, In turn nursing staff were receiving less lack of work ( LOW), creating a more predicable schedule and fuller work days. Implications for perioperative Nursing; Stabilizing the operating room schedule , through right sizing supports a more stable work schedule for the nursing staff, and will increase the efficiencies throughout the department.