A senior manager facilitates an open discussion between two conflicting department heads, acknowledging both perspectives without imposing a solution, and encouraging them to reach an outcome that fully satisfies both parties' concerns. According to the Thomas-Kilmann model, which style is the manager employing?

The Thomas-Kilmann model identifies five conflict resolution styles along two dimensions: assertiveness and cooperativeness. Collaborating is high on both — it involves working with the other party to find a solution that fully satisfies both sides (win-win). The key phrase in the question is "fully satisfies both parties' concerns" — this rules out Compromising (which involves partial satisfaction for both) and all other styles. Collaborating is the most time-intensive but produces the best long-term outcomes and is appropriate when both parties' concerns are important enough to merit a full solution.