What is it?

Open Space Technology is a method for running meetings and conferences where participants create the agenda themselves. There's no pre-planned schedule. Instead, anyone who cares about a topic posts it on a wall, and people self-organise into discussion groups based on what interests them. The facilitator sets up the structure and then gets out of the way. Sessions happen simultaneously, participants move freely between groups, and the outcomes are documented in real time. It sounds chaotic, but it consistently produces focused conversations, unexpected connections, and genuine commitment to action.

Also Known As

• Open Space
• OST
• Unconference (though this term is used more broadly)
• Self-Organising Meeting

When to Use It

• When you have a complex issue that affects many people and no single expert has the answer
• For conferences or large gatherings where you want high engagement rather than passive listening
• When diverse perspectives need to come together around a shared theme
• To surface the issues that people actually care about, not just what leadership thinks matters
• For strategic planning when you need broad input and ownership
• When a group feels stuck and needs fresh energy and new combinations of people
• To build community and connection across silos or hierarchies
• When you have limited planning time but need a productive event

When NOT to Use It

• When the decision has already been made and you just need to communicate it
• For small groups under 12 people (it works but loses some of its magic)
• If leadership isn't genuinely open to unexpected outcomes
• When there's a detailed agenda that must be covered in a specific order
• For highly technical topics requiring specialist expertise in sequence
• If participants don't have genuine choice about attending
• When the organisational culture punishes speaking up or taking initiative
• If you need a single, definitive answer rather than multiple parallel explorations

Open Space Technology was created by Harrison Owen in 1985. Owen, an organisational consultant, noticed that conference participants consistently reported that the best conversations happened during coffee breaks, not in the scheduled sessions. He designed Open Space to capture that coffee-break energy for the whole event. The method spread globally through practice rather than formal training programmes, and has been used with groups ranging from 5 to 2,100 people across business, community, government, and non-profit sectors.

What You Need

Group size: 12-2,000+ participants. Works best with 25-200. Below 12 feels forced; above 500 requires experienced facilitation and strong logistics.

Time required:

• Minimum: Half day (3-4 hours) for a focused topic
• Typical: Full day or two days
• Extended: Three days for complex, multi-stakeholder issues

Space:

• One large room where everyone can gather in a circle (or concentric circles for large groups)
• Breakout spaces for simultaneous sessions — can be corners of the main room, adjacent rooms, outdoor areas, or corridors
• A large blank wall for posting the agenda (the "marketplace")

Materials:

• Flip chart paper (lots of it)
• Markers for every session convener
• Masking tape
• A4 paper for session proposals
• A blank wall or board for the marketplace grid
• Session documentation templates (paper or digital)
• Bell, chime, or gong for time signals
• Comfortable seating that can be rearranged

The Process

Setup

1. Create the marketplace wall: a grid showing time slots (rows) and spaces (columns). For a one-day event, you might have three 90-minute slots and five spaces, giving capacity for 15 sessions.
2. Prepare A4 sheets for session proposals — blank or with simple prompts (Topic, Convener name).
3. Set up the main room with chairs in a large circle. No tables. Everyone should be able to see everyone else.
4. Identify and label breakout spaces. Make sure participants can find them easily.
5. Prepare flip chart paper and markers for each breakout space.
6. Test your bell or chime — it needs to be heard throughout the venue.
7. Decide how sessions will be documented (paper notes, shared documents, photos of flip charts).

Step 1: Opening Circle

Time: 30-45 minutes

Purpose: To welcome participants, explain the process, and create the conditions for self-organisation.

1. Welcome everyone to the circle. If the group is large, wait patiently for people to settle. Don't rush.
2. Introduce the theme: "We're here today to explore [theme]. This is the question that's brought us together."
3. Explain the format: "This is Open Space. There's no pre-set agenda. You're going to create it. Anyone who has a topic they care about, something they want to explore or a question they want to discuss, can propose a session."
4. Introduce the Four Principles:
   • "Whoever comes are the right people" — quality of conversation matters more than quantity or status
   • "Whatever happens is the only thing that could have" — let go of expectations
   • "Whenever it starts is the right time" — creativity doesn't follow the clock
   • "When it's over, it's over" — if you finish early, move on; don't pad
5. Introduce the Law of Two Feet (or Law of Mobility): "If you find yourself in a situation where you're neither learning nor contributing, use your two feet. Go somewhere else. It's your responsibility to take care of your own learning."
6. Explain the roles:
   • "Bumblebees" cross-pollinate by moving between sessions
   • "Butterflies" may not go to any sessions but create space for informal conversation
7. Demonstrate how to propose a session: write your topic, say it aloud, post it on the marketplace.

Watch for: The temptation to over-explain. Keep the opening tight. The method teaches itself through practice.

Step 2: Creating the Marketplace

Time: 15-30 minutes (depending on group size)

Purpose: To generate the agenda from participants' genuine interests and concerns.

1. Invite proposals: "If you have a topic you care about, something you're willing to convene a conversation around, come to the centre, grab a paper and marker, write your topic, and be ready to announce it."
2. As people write, let the energy build. Don't fill silence with chatter.
3. When several people are ready, invite them to announce their sessions one by one: "Say your name, say your topic briefly, and post it on the wall. Don't explain or justify — just name it."
4. Keep the pace moving. If someone starts giving a speech, gently interrupt: "Just the topic for now. You'll have time to explore it in your session."
5. Continue until the flow of proposals stops naturally. You might prompt once: "Anyone else? Last chance."
6. Once all sessions are posted, invite participants to review the marketplace and sign up (physically or mentally) for sessions they want to attend.
7. Allow time for the marketplace to settle. People will cluster, read, discuss, and negotiate.

Watch for:

• Session conveners who want to control attendance — remind them that whoever comes are the right people.
• Too many sessions in one slot — the group will self-adjust, or you can gently suggest moving a session.
• Too few sessions — this is fine. Open Space works with whatever emerges.

Step 3: Sessions Run

Time: The bulk of your event (multiple rounds of 60-90 minute sessions)

Purpose: To enable focused conversations led by people who genuinely care about the topic.

1. Ring the bell to signal the start of the first session round.
2. Step back. Your job now is to be invisible. Walk the space occasionally but don't intervene unless there's a logistical problem.
3. Session conveners are responsible for starting their session, but not for "running" it. Their job is to frame the question and ensure documentation happens.
4. Participants use the Law of Two Feet freely. Movement between sessions is normal and healthy, not rude.
5. Each session should produce documentation — key points, insights, action items. This can be on flip chart paper, a shared document, or a template you've provided.
6. Ring the bell 5 minutes before the end of each round as a warning.
7. Ring the bell at the end of the round. Sessions should wrap up and documentation should be completed.
8. Allow 10-15 minutes between rounds for transition, coffee, and checking the marketplace.
9. Repeat for subsequent rounds.

Watch for:

• Sessions that run over time — ring the bell firmly and trust that participants will close
• Empty sessions — this is fine; the convener can join another session or use the time for reflection
• Conflict in sessions — usually self-resolves; only intervene if someone asks for help

Step 4: News and Announcements (Optional)

Time: 10-15 minutes between major session blocks

Purpose: To allow cross-pollination and share emerging insights.

1. Gather the group briefly (standing is fine).
2. Invite brief announcements: "Any news from your sessions? Anything the whole group should know? Sessions that are merging or moving?"
3. Keep it short. This is information sharing, not reporting.
4. Release the group to the next round.

Step 5: Closing Circle

Time: 30-60 minutes

Purpose: To harvest insights, acknowledge the work, and create closure.

1. Gather everyone back in the circle.
2. Review the documentation: display flip charts, circulate printed summaries, or project shared documents. Give people time to read.
3. Invite reflections: "What are you taking away from today? What struck you? What surprised you?"
4. Go around the circle or take popcorn-style contributions, depending on group size and time.
5. If there are action items or next steps, acknowledge them. Identify owners if possible, but don't force commitment.
6. Close with appreciation: "Thank you for showing up, for taking responsibility, for your willingness to engage with uncertainty."
7. Name what happens next with the documentation — will it be circulated? Published? Used for planning?

Watch for: The urge to summarise or synthesise. Let the participants make their own meaning. Your job is to hold space, not to wrap it up neatly.

Facilitator Guidance

What Makes This Work

Open Space works because it aligns structure with human nature. People engage when they care about something. They contribute when they have choice. They take responsibility when they're trusted. The Four Principles and the Law of Two Feet create a container that's both bounded and free — there's enough structure that people feel safe, but enough freedom that creativity can emerge. The marketplace makes the agenda visible and democratic. The parallel sessions allow the group to process far more than a single-track format could. And the documentation ensures that insights don't evaporate. The facilitator's role is to set up the conditions and then trust the process.

Common Pitfalls

• Over-facilitating: Once Open Space begins, your job is to be nearly invisible. Don't manage, guide, or intervene. Trust the group.
• Weak opening: If you don't explain the principles and the Law of Two Feet clearly, participants won't use them. Be crisp and confident in the opening.
• Too many time slots: More sessions isn't better. Leave time for informal conversation and processing. Three or four session rounds is usually enough for a full day.
• Skipping documentation: Without documentation, the insights disappear. Make it easy for conveners to capture their sessions. Provide templates and collect them.
• Forcing convergence at the close: Open Space is divergent. Don't try to force a single conclusion. Honour the multiple threads that emerged.
• Wrong venue: If breakout spaces are hard to find or too far apart, energy dissipates. Keep spaces close and visible.
• Inviting the wrong sponsor: If leadership isn't genuinely open to unexpected outcomes, they'll undermine the process. Have honest conversations before agreeing to facilitate.

Adaptations

• Virtual delivery: Possible using video conferencing with breakout rooms and a shared document for the marketplace (Miro, Google Sheets, or Trello work well). Assign clear room names. Use countdown timers visible to all. Movement between rooms requires more explicit instruction online. It works, but loses some spontaneity.
• Smaller groups (12-25): Run fewer parallel sessions (2-3 spaces instead of 5). The intimacy can deepen conversations but you lose some of the serendipity of larger groups.
• Half-day version: Two session rounds with a shorter opening and closing. Focus the theme tightly. Acknowledge that this is a "taster" rather than full Open Space.
• Multi-day events: Add evening social time, start Day 2 with brief community news, and build in a convergence session on the final afternoon where related sessions can merge findings.
• Hybrid (in-person and remote): Challenging but possible. Designate some sessions as hybrid-friendly with good audio/video. Accept that remote participants will have a different experience.

Real-World Applications

Corporate strategy retreat: A technology company used Open Space for their annual leadership retreat. Instead of presentations from executives, 80 leaders proposed and ran sessions on challenges they were facing. The CEO attended sessions as a participant, not a presenter. The result was a strategy document written by the people who would implement it.

Community planning: A city council facing conflict over development used a two-day Open Space to bring together residents, developers, environmentalists, and businesses. The self-organised sessions surfaced common ground that months of public hearings had missed. Three collaborative working groups formed spontaneously.

Conference transformation: An industry association replaced their traditional conference format with Open Space. Attendance increased because people knew they could discuss what mattered to them. Feedback scores doubled. Speakers who'd previously delivered keynotes now convened discussions, and reported finding it more rewarding.

Merger integration: Two merged organisations used Open Space to address cultural differences. Instead of management telling people how to integrate, employees proposed sessions on real friction points. The honest conversations accelerated trust-building that formal "culture initiatives" had failed to achieve.

Product innovation: A consumer goods company ran quarterly Open Space days for R&D teams. Anyone could propose a session on an idea, problem, or experiment. Several successful products originated from these sessions, including combinations of ideas from different teams who'd never collaborated before.