How Many Boards Is Too Many? Capacity, Overboarding and the Portfolio Question
Once an executive secures a first board seat, a second question soon follows. How many board roles can I realistically take on? Some aspiring directors imagine a portfolio of five or six seats. Some experienced directors hold that many. Others find that two or three are more than enough.
There is no single right number. But there is a clear risk in taking on too many, and chairs, shareholders and investors are paying closer attention to it than ever. The term used is overboarding, and it can affect both your effectiveness as a director and your chances of being appointed.
What overboarding means
Overboarding describes a director holding more board roles than they can properly manage. It is not simply about the number of seats. It is about whether the director has the time and capacity to meet their responsibilities on every board, including when something goes wrong.
Institutional investors and proxy advisers in many markets have policies or guidelines on the number of board roles they consider appropriate, particularly for directors of listed companies and for chairs. Boards themselves increasingly ask candidates about their other commitments and assess their capacity before making an appointment.
Why capacity matters more than the number
A single board role can take very different amounts of time depending on the organisation. A chair of a large listed company, a director of a business in crisis or a member of a board going through a major transaction may spend far more time than the formal meeting schedule suggests. A director of a small, stable not-for-profit may need much less.
That is why the useful question is not how many boards, but how much time each board really needs, and whether you can give it.
When assessing your capacity, consider:
The size and complexity of each organisation
Your role on each board, including chair and committee chair roles
The frequency of meetings, committee meetings and other commitments
The volume of board papers and preparation
The likelihood of a crisis, transaction or major change
Your other commitments, including any executive, consulting or advisory work
Plan for the crisis, not the calendar
The most common mistake directors make is planning their capacity around a normal year. Board work is uneven. A chief executive departure, a cyber incident, a regulatory investigation, a takeover approach, a major project failure or a financial crisis can require intense involvement for weeks or months, often with little warning.
If you hold several board roles, the chance that at least one of them is going through a crisis at any given time is significant. If two go through a crisis at once, you may not be able to meet your responsibilities to both.
Experienced directors build in capacity for this. They hold fewer roles than their calendar suggests they could, so that they can respond when a board needs them.
Chair roles count for more
A chair role takes considerably more time than a director role. The chair leads the board, works closely with the chief executive, manages board performance and represents the organisation externally. In a crisis, the chair’s time commitment can be very high.
Most experienced directors treat a chair role as equivalent to two or more director roles when thinking about their capacity. Our piece on moving from director to chair covers what the role involves.
Committee chair roles also add weight. Chairing an audit and risk committee, for example, means working closely with the CFO and the auditors, reviewing the detail behind the accounts and being ready to answer hard questions at year end. It is more than a meeting. It is a steady flow of reading, calls and follow-up.
A worked example: mapping your load
It helps to write your commitments down and weigh them, rather than count them. This is an illustrative example, not a formula.
For example, a former CFO might list her current and proposed roles like this:
Chair, mid-sized private company. Heavy. Regular contact with the chief executive, plus a growth plan that may lead to a sale.
Director and audit committee chair, not-for-profit. Moderate. Steady year, but the audit committee role adds real work around year end.
Director, family business. Light to moderate. Stable, but a succession question is coming.
Proposed: director, listed company. Heavy. Larger papers, continuous disclosure, investor scrutiny and a higher chance of a live issue at any time.
Looked at this way, the question changes. It is not “Can I fit one more?” It is “If the private company sale and the family succession both happen in the same year, can I still give the listed board what it needs?”
If the answer is no, the options are clear. Decline the new role, step back from an existing one, or wait until one of the heavy periods has passed.
Questions to ask yourself before you say yes
Before you accept a new seat, work through these questions:
What does this board need from me in a normal year, and in a bad one?
Which of my current roles is most likely to go through a crisis in the next two years?
Could I clear my diary for a week at short notice if this board needed me?
Am I taking this role because it fits my goals, or because I find it hard to say no?
What would I give up if this role turned out to be twice as demanding as I expect?
If you struggle to answer the last question, you probably do not have the capacity yet.
Executives and board roles
If you are still in an executive role, your capacity for board work is limited. Most employers allow one external board role, sometimes two, and usually require approval. Many will not allow external roles in competing or related businesses.
For employed executives, one well-chosen board seat is usually the right number. It gives you governance experience without compromising your executive role. Our guide to building a board career while employed covers the practical considerations.
How chairs assess your capacity
When you apply for a board role, the chair and nomination committee will want to know about your other commitments. They will ask directly, and they will also look at what you have disclosed publicly.
Be honest. List your current board and committee roles, executive or consulting work and any other significant commitments. Explain how you manage your time and why you have capacity for this role.
If you already hold several roles, be prepared to explain how you would manage a crisis on this board alongside your other commitments. Chairs are wary of candidates who seem to be collecting seats.
What the chair is thinking
From my years on the recruiter side, I know the capacity question is rarely asked for form. The chair is imagining the worst week of the next three years and asking whether you will be in the room for it.
They are weighing a few things at once:
Availability. Will this person read the papers properly and turn up prepared?
Conflicts. Do any of their other roles overlap with our sector, suppliers or competitors?
Motive. Do they want this board, or do they want another line on their bio?
Stability. If we appoint them, will they still be here in two years, or will they step away for a bigger role?
A candidate who answers these concerns before they are raised is far more reassuring than one who waits to be asked.
How to show capacity on your board resume
Your board resume should make your commitments easy to read. Hiding or blurring them only raises suspicion.
Before: “Currently holds a range of board and advisory roles across multiple sectors.”
After: “Chair, private manufacturing business (since 2021). Non-executive director and audit committee chair, regional health not-for-profit (since 2019). Available for one further listed or large private company role.”
The second version is clear, specific and confident. It tells the chair what you hold, how long you have held it and that you have thought about your capacity. That last line often does more work than any achievement bullet.
Building a portfolio sustainably
If your goal is a portfolio career, build it deliberately. Consider the mix of roles, not just the number.
A sustainable portfolio often combines roles of different intensity, such as one significant chair or listed company role, one or two director roles on medium-sized boards and one not-for-profit or community role you care about. It leaves room for a crisis, for professional development and for life outside board work.
It also evolves over time. As you take on a more significant role, you may need to step back from another. Our piece on leaving a board well covers how to do that without damaging your reputation.
Signs you have too many roles
Watch for the warning signs:
You regularly read board papers at the last minute
You miss meetings or join late
You cannot respond quickly when the chair or chief executive needs you
You feel you are not contributing as well as you should
Your own health, family or other work is suffering
If any of these apply, it is time to reduce your load, even if it means stepping back from a role you enjoy. Your reputation as a director depends on the quality of your contribution, not the number of your seats.
Quality over quantity
The directors who are most in demand are rarely those with the most seats. They are the ones known for preparation, judgement and availability when it matters. Chairs talk to each other, and a reputation for being stretched too thin travels quickly.
When you are building a board career, it is tempting to say yes to every opportunity. The better approach is to choose roles that matter to you, fit your expertise and leave you enough capacity to do each one well.
If you want to position yourself for the right board roles, rather than the most, see board resumes and NED positioning.
If you are planning the shape of your board portfolio, book a complimentary Clarity Session and we will look at the mix of roles that fits your capacity and goals.
