Written by My Collaborative Team President Edward S. Sachs
The Collaborative Process relies on the underlying premise of interest-based negotiation. Interest-based negotiation is designed to uncover underlying needs, priorities, and concerns openly so the parties can solve problems together. Once parties are separated into private meetings, information becomes controlled, strategic, and filtered through the facilitator. Instead of directly engaging each other, parties often begin managing leverage and messaging.
The process can quietly become “What can I get?” instead of “How do we solve this together?”
One of the major goals of interest-based negotiation is helping parties learn to communicate constructively with one another. Caucuses interrupt that learning. The mediator or facilitator becomes the conduit for communication, which can: create dependency on the neutral, distort meaning through paraphrasing, reduce accountability for statements, and prevent parties from hearing tone, emotion, and sincerity firsthand.
Difficult conversations are often the conversations that produce breakthroughs so don’t be afraid of what may happen in the team meeting.
Even when handled ethically, private sessions can create suspicion. In high-conflict situations, perception matters as much as reality. A process intended to build trust can instead reinforce defensiveness and fear.
When parties know they’ll have private access to the mediator, they may hold back important information in joint session. Instead of risking vulnerability publicly, they wait for caucus to test ideas privately or gain tactical advantage. That undermines one of the key principles of interest-based negotiation, shared understanding through open exploration.
When parties work through tension together, respectfully and productively, they build ownership of both the process and the outcome. Agreements reached transparently tend to have greater durability, higher compliance, less post-agreement resentment, and stronger long-term relationships.
A negotiated solution is more likely to last when the parties themselves did the hard work together rather than through shuttle diplomacy.
If interest-based negotiation depends on openness, mutual understanding, and collaborative problem-solving, then caucusing introduces secrecy, asymmetrical information, and facilitator-centered communication, all of which pull the process away from its foundational principles.
That doesn’t mean caucuses are never useful. Many negotiators argue they can help de-escalate emotion, reality-test positions, or protect sensitive disclosures. But the anti-caucus argument is that those short-term gains often come at the cost of long-term trust, transparency, and genuine collaboration.
