Boards of Requisite Variety: The Cybernetic Case for Broadening Governance Participation

By Tom Powdrill, Project Lead, Broadening Corporate Governance Participation

It’s not easy to neatly summarise what corporate governance is ‘for’ but if you asked many people who work in and around the field the word ‘accountability’ would feature prominently. In particular, when talking about the Anglo-American model, this typically means accountability to shareholders.

Because of this, many of those who work in this field struggle with the idea that other voices, be it of workers, communities or some other group, should feature in corporate governance. In turn, the result is that the boards of directors of public companies in markets like the US and UK are largely composed of executives from other public companies. Boards in these markets are heavily weighted towards executive and financial experience.

But accountability is not necessarily the only or even the primary function of governance. A major part of the work of boards is to interpret and respond to the feedback they receive from various sources (customers, the workforce, capital markets, regulators etc) and act accordingly to ensure the company operates effectively, optimizing opportunities and avoiding risks. Seen this way, corporate governance is not simply a mechanism of accountability, it is a control system designed to detect, interpret and respond to signals from its operating environment. Does the current structure of boards support this function?

Here let’s take a turn to the field of cybernetics. Ashby’s Law of Requisite Variety (named after the British cyberneticist W. Ross Ashby) is one of those ideas that, once you hear it, can seem both obvious and profound at the same time. The principle is simple: only variety can absorb variety. A system can respond to a complex environment only if it contains sufficient internal complexity to match the disturbances it faces.

Things go wrong when the control system cannot handle the signals it receives. Policies and processes in place may not enable the system to respond effectively. Information may be misinterpreted and lead to faulty responses.

Although developed in the context of cybernetics, the idea translates nicely into corporate governance. A board operates as a control mechanism for a business. It monitors, interprets and responds to signals from the environment the business operates in. If the environment becomes more complex, but the board’s composition, information channels and decision frameworks remain narrow, we might expect trouble. The system can still function, but its responses may misfire.

The environment in which businesses now operate is often very complex. Technological transitions, particularly around automation and AI, are reshaping labour and skills requirements. The climate transition poses significant challenges across sectors. Consumer criticism of businesses, and activism, is amplified and spread globally and instantaneously via social media, often leading to calls for political and regulatory intervention. And corporate behaviour is subject to intense political scrutiny, both from left and right.

Put in cybernetic terms businesses face significant environmental variety. They operate within a feedback-rich world, receiving signals from different interest groups.

So, drawing on Ashby’s law, does the dominant Anglo-American shareholder-focused board model contain sufficient internal variety for this environment? Looked at in this way, it is striking how limited the variety in boards is, and one can see how as a result businesses might struggle to interpret and respond to the signals they receive.

Capital market signals are continuous, high-frequency and clear: share price movements, quarterly earnings, analyst reports and so on create a constant stream of interpretable feedback. Operational and workforce signals, by contrast, are often episodic. Such information is also often mediated through management reporting structures and abstracted into dashboards, which risks becoming overly simplified. Workforce concerns get reduced to engagement ‘scores’ or attrition rates. Community impacts surface only when something serious looms.

Inevitably boards respond to the signals that are clearest and most persistent. So the governance system becomes finely tuned to capital market disturbances ​​and shaped through the lens of executive or business school training, while remaining comparatively insensitive to slower-burn on the ground, and real-world social risks. The issue is not bias in intention but an imbalance in the way feedback is received and interpreted. The board governs, but its capacity to absorb disturbances is limited by its structure, training, lived and professional experience, and the form of information it receives.

Well-meant attempts to bridge the gap have focused on trying to demonstrate the financial materiality of concerns from the workforce, community or other groups. But, taking a view informed by cybernetics, this might present a problem. Such an approach seeks to change the nature of the signal received, translating stakeholder feedback into a financial metric, and force it back within the existing capital markets channel. Stakeholder concerns that do not meet the threshold of seeming financial material can be deprioritised or ignored, left to take their own shape on the backburner.

In cybernetic terms, this seems to conflict with requisite variety. Rather than ensuring that variety matches complexity, this approach seeks to reduce complexity to fit the existing structure, filtering signals to allow through those that ‘fit’ the channel and downplaying or ignoring those that do not. In reality, this approach does not reduce the complexity businesses face, but it might hide it.

One symptom of insufficient variety in governance might be the prevalence of ‘surprise’ crises. Industrial disputes that escalate rather than being resolved internally. Safety concerns and failures that persist and worsen until a blowout. Toxic internal cultures that fester until scandal breaks out into the open. Community controversies that do not appear on the board’s radar until it is too late. In each case, the disturbance may be present in the system, but the board’s configuration does not enable it to fully register the significance until it becomes severe.

From this perspective, broadening corporate governance participation may be a route to increased internal variety, and to the ability to receive and process complex environmental signals. This could take the form of workforce directors, advisory panels or some other format. Whichever form it takes, the objective is to diversify the board’s sensing and interpretive capacity.

This is not a silver bullet, but broadening participation offers additional channels through which environmental variety enters the business control system we call corporate governance.

Nor is this an argument for bloated boards. Ashby does not argue for maximal variety. More perspectives do not automatically improve governance. The objective is calibration: matching governance complexity to contextual complexity.

Since the start of PDI’s work on broadening corporate governance participation we’ve been speaking to a range of people who have been involved with the idea of workforce directors specifically.

In one example the model was proposed to a company because workforce concerns about safety and quality issues were not being acted on by a board that was instead focused on managing and responding to capital market signals. In another, the addition of a workforce director role was reported to have enabled the transmission of information that would simply not have made it to the board otherwise.

These are nice illustrations of Ashby’s law in practice - boards with insufficient variety not receiving, or not properly processing, critical signals.

So for cybernetics the issue is not whether broadened participation is fair, or contributes to diversity, as valid as those motivations can be. It is whether the governance system has sufficient capacity for the context in which it operates. From this perspective Anglo-American boards look both narrow in scope and remarkably similar across industries that have little in common.

If workforce issues, community conflicts and reputational damage repeatedly emerge as external crises rather than internally managed risks, despite a board structure built on ‘accountability’, that may be evidence that governance lacks variety.

If corporate governance is a control system, then the question Ashby poses is not who deserves a seat at the table, but whether the table is equipped to process the complexity it faces.