When an executive sets a quarterly Rock that relies heavily on work from other departments, how do we structure ownership and handoffs so the Rock actually finishes by day 90?

Question

Tyler Smith · Accepted Answer

The core rule of EOS® Rocks is that a Rock can have only one owner. Shared ownership means zero accountability. When a Rock requires cross-functional execution, the seat owner must be the executive with ultimate authority over the finished deliverable, not a cross-departmental committee.

To ensure multi-department Rocks finish by day 90, the owner must establish binary milestone dates during week one of the quarter. For instance, if a marketing Rock requires software integration from engineering, the marketing leader must secure explicit delivery commitments from the engineering seat during the quarterly planning session, not mid-quarter when calendars are already full.

During weekly Level 10 Meetings, the Rock owner reports on track or off track based strictly on milestone adherence. If a supporting department misses an interim deadline, the Rock owner flags the Rock off track immediately and drops it to the Issues List for IDS®. You cannot wait until week ten to announce that another department stalled your progress.

By resolving interdepartmental bottlenecks in week three or four through IDS, the leadership team protects the delivery schedule. If resources must be reallocated, the Integrator makes that call immediately. Either the supporting department clears the path, or the scope is adjusted before the 90-day window closes.