Channels of communication

Two-way communication is communication in which the receiver responds to the sender, so that feedback flows back and the sender can confirm the message has been understood.

One benefit of effective upward communication is that managers receive feedback, ideas and information from front-line staff. Because employees often know most about day-to-day problems and customers, allowing their views to travel up the hierarchy helps managers make better-informed decisions and spot problems early. It also makes staff feel listened to and valued, improving motivation.

Vertical communication flows up and down the hierarchy, between people at different levels. For example, a manager passing a sales target down to the sales team (downward), or a worker reporting a fault up to a supervisor (upward). It is used to direct staff and to receive feedback.

Horizontal communication flows across the same level, between people of equal status in different departments or teams. For example, the marketing manager and the operations manager agreeing the timing of a product launch. It is used to coordinate activities.

The key difference is direction relative to the hierarchy: vertical links different levels (up/down), while horizontal links the same level (across). Both are needed — vertical to direct and gather feedback, horizontal to coordinate departments.

A long chain of command exists when a business has a tall organisational structure with many levels of management, so messages must pass through many people. This creates several communication problems.

The first is distortion of the message. As information is passed from level to level, each person may interpret or summarise it slightly differently — like 'Chinese whispers' — so the message that reaches the front line can be inaccurate or incomplete. Distorted instructions lead to errors, wasted resources and confusion among staff.

The second problem is delay. With many levels to pass through, messages take longer to travel both down and up the hierarchy. In a fast-moving market or an urgent situation, this slowness can mean the business reacts too late, losing customers or opportunities.

The third problem is weak upward communication and feedback. Staff at the bottom feel distant from decision-makers and may believe their views will not reach the top, so they stop offering ideas or reporting problems. Managers then lose valuable front-line information and motivation falls.

These problems tend to worsen as the business grows larger and as messages become more urgent. They explain why many firms with tall structures choose to delayer — removing levels of management to shorten the chain, speed up communication and strengthen feedback — though this widens spans of control. Overall, a long chain of command undermines the accuracy, speed and two-way nature of communication, which can significantly reduce a firm's efficiency.

Shifting from one-way, downward communication to much more two-way communication could bring real benefits, but the decision should be evaluated against the firm's situation rather than assumed to be always right.

The case for more two-way communication. Two-way communication allows feedback, so managers can confirm that messages have been understood and correct misunderstandings before they cause errors. It lets staff contribute ideas and report problems, giving managers better information from the front line and improving decisions. Crucially, it makes employees feel listened to and valued, raising motivation and morale — which can lift productivity and reduce labour turnover. For a business that depends on engaged, skilled staff or that is going through change, more two-way communication can be very valuable.

The case against / the costs. Two-way communication is slower and more time-consuming than simply issuing instructions. For simple, urgent or purely informational messages, one-way downward communication is faster and perfectly adequate, so making everything two-way could waste management time. More two-way communication can also be harder to control and may raise expectations — if staff give feedback but managers ignore it, motivation can fall further than before. Achieving genuine two-way flow may also require structural change (flatter hierarchy, more meetings), which has its own costs.

Weighing it up (criterion). The right balance depends on the type of message and the firm's culture and structure. For decisions that affect staff, problem-solving, and during change, more two-way communication is clearly beneficial. For routine instructions, one-way downward communication remains efficient. The benefit also depends on managers genuinely acting on the feedback they invite.

Judgement. Increasing two-way communication is likely to be worthwhile, but the manager should not abandon one-way communication entirely. The strongest decision is to use more two-way communication where understanding, ideas and motivation matter — important decisions, problems and change — while keeping efficient one-way downward communication for simple, urgent instructions. This balance gains the motivation and accuracy benefits of two-way communication without the time cost of making everything a discussion, provided managers act on the feedback they receive — otherwise the change could backfire by raising then disappointing expectations.

Communication flows through channels — the routes messages take up, down and across an organisation. The structure of a business shapes those channels, but it is not the only thing that determines whether communication is effective.

The case that structure is the main factor. Organisational structure directly determines the length and shape of the communication channels. A tall structure with many levels creates a long chain of command, which distorts and delays messages and weakens upward feedback, while a flat structure shortens chains, speeds communication and brings staff closer to decision-makers. The span of control, the number of departments, and whether the structure encourages horizontal links between teams all flow from the structure. Because the structure sets the 'plumbing' through which every message must pass, getting it wrong (e.g. an over-tall hierarchy or rigid silos) can cripple communication regardless of other efforts — so structure can reasonably be seen as the main factor.

The case that other factors matter more. First, management style and culture can override structure: an open, democratic culture that encourages upward and two-way communication can flow well even in a tall structure, while a closed, autocratic culture can block communication even in a flat one. Second, the choice of methods and channels matters — using inappropriate methods (e.g. email for sensitive news) or too many/too few channels causes problems whatever the structure. Third, barriers such as jargon, language and cultural differences, and the skills and attitudes of senders and receivers (clear encoding, willingness to listen) heavily affect understanding. Fourth, technology can shorten effective distance — an intranet or video conferencing can make a large, dispersed firm communicate almost as quickly as a small one, partly compensating for structure.

Weighing it up (criterion). Whether structure is the main factor depends on where the binding constraint on communication lies. If the firm's hierarchy is genuinely too tall or siloed, structure is the dominant problem and restructuring is the key fix. If the structure is reasonable but the culture is closed, methods are poor, or barriers are high, then those factors matter more and changing the structure alone would not fix communication.

Judgement. Organisational structure is a fundamental factor — often the first to examine — but not always the main one. It sets the channels through which communication must flow, and a badly designed structure can be the single biggest obstacle. However, culture and management style, the choice of methods and channels, communication barriers, and technology can each be more decisive in a given firm. The most defensible conclusion is that structure is usually the most important enabling factor, because it shapes every channel, but effective communication ultimately depends on structure working together with an open culture, appropriate methods and the removal of barriers — so structure is necessary but not sufficient on its own.