When we hear the word “ergonomics,” the first thing that comes to mind is posture. Desk height, monitor angle, lumbar support. The recommendations are clear, the standards exist, and with some effort, everything can be adjusted in a single evening. But the history of ergonomics as a science began far from the office chair — and understanding this changes what an “ergonomic workspace” actually means.

If you want to skip straight to practical steps — the section “What you can do about it” is at the end. But the context helps explain why these particular things matter.

How ergonomics became a science — and what it was really about

The term “ergonomics” was formally introduced in 1949 by the British psychologist Hywel Murrell, when a group of researchers from different disciplines — physiology, psychology, engineering — came together to study the conditions of human work. But the problem itself had emerged earlier, during World War II, and it had nothing to do with comfort.

Pilots were making catastrophic errors — not because they were poorly trained, but because cockpit instrument panels had been designed without accounting for how humans process information under stress and overload. Levers that were easy to confuse. Gauges that couldn’t be read quickly. Switches placed where the hand naturally reached for the wrong one. Alphonse Chapanis, one of the founders of engineering psychology, demonstrated that many of these accidents were not human errors but environmental errors — a system that placed demands incommensurate with the capacities of human perception and response (Chapanis, 1949).

This was a turning point. Before it, the prevailing logic was selection: find people who can cope with the conditions. After it, a different logic emerged: change the conditions so that people can cope.

It’s worth pausing here, because this applies far beyond aviation. Every time we tell ourselves “I lack discipline,” “I can’t focus,” “I’m probably just lazy” — we are, in essence, applying that same pre-ergonomic logic. Looking for the problem in the person, not the conditions. Ergonomics began with the opposite question: what if it’s not the person?

Three layers of ergonomics — two of which are rarely discussed

The International Ergonomics Association (IEA) identifies three domains: physical, cognitive, and organizational ergonomics. In everyday usage, only the first has taken hold — the one concerned with posture, furniture, and the musculoskeletal system. The other two are rarely mentioned outside professional publications, even though they often determine how a person feels by the end of a workday.

Cognitive ergonomics studies how the environment affects perception, attention, memory, and decision-making. Its foundations were laid in the work of Christopher Wickens, who developed the multiple resource theory of attention (Wickens, 2008). Wickens showed that attention is not a single stream that can be “strengthened by willpower,” but a system of parallel channels, each with limited bandwidth. The visual channel becomes overloaded independently of the auditory one; spatial processing independently of verbal. When the environment places demands on multiple channels simultaneously, the total load can exceed the system’s capacity — even when each individual demand seems small.

For your home office or workspace, this means that visual complexity in the surroundings, background noise, the need to monitor what’s happening behind you, and the presence of distracting objects in your field of vision — all of this creates cognitive load that competes for the same resources needed for work. The chair may be perfect, yet the person is still exhausted — because the fatigue is created not by posture, but by the load on attention.

Daniel Kahneman described this as early as 1973 in Attention and Effort: attention is a limited resource, and its allocation depends not only on the person’s intentions but also on the structure of the environment — its pace, stimulus density, predictability (Kahneman, 1973). The environment can support attention, or it can quietly spend it.

Organizational ergonomics — the third, even less familiar layer — concerns neither space nor perception, but the structure of the work process itself. How tasks are distributed across time. Whether there is an opportunity to complete one task before the next begins. How predictable the rhythm of the day is. Whether there are pauses — real pauses, not switching from one screen to another.

Gloria Mark, studying worker behavior in digital environments, found that the average time of uninterrupted work on a single task had shrunk to three minutes before a switch occurs — to a message, a notification, a different task. Each switch has a cost: returning to the interrupted task takes an average of twenty-three minutes, and the quality of attention after the interruption is reduced even when the person has formally returned to work (Mark et al., 2008). A workday composed of continuous switches may look productive but feel exhausting — and the cause is not the volume of tasks but the impossibility of sustaining attention on any one of them.

Herbert Simon warned as early as 1971 that in a world saturated with information, the scarce resource is not information but attention (Simon, 1971). Organizational ergonomics addresses exactly this: how the structure of work either protects attention or depletes it — through endless interruptions, parallel streams, and the absence of completed cycles.

All three layers — physical, cognitive, and organizational — operate simultaneously. The body may be in a comfortable posture, but if the visual environment is overloaded and the work process doesn’t allow focus for more than a few minutes, the overall sensation by the end of the day will feel like heavy physical labor. Because in a certain sense, it was — only the work was done not by the body, but by the nervous system.

How your workspace affects you without your awareness

In 1979, James Gibson published The Ecological Approach to Visual Perception, proposing a radically different view of the relationship between person and environment. For Gibson, the environment is not a passive backdrop that we look at, but an active field of possibilities. Every object and every spatial configuration offers certain actions — Gibson called these affordances. A chair offers sitting, a button offers pressing, a horizontal surface offers leaning. We read these possibilities directly, with our bodies, without conscious analysis (Gibson, 1979).

Donald Norman, extending Gibson’s ideas into design, showed that a well-designed environment minimizes cognitive load precisely through the clarity of affordances. When an object clearly “communicates” what to do with it, the action is performed automatically and doesn’t consume attentional resources. When the environment is contradictory — a door that needs to be pushed but looks like it should be pulled — a micro-difficulty arises, imperceptible but energy-consuming (Norman, 2013).

Your workspace is composed of dozens of such signals. A phone in your field of vision offers to be picked up — and the brain spends resources resisting. A study by Ward and colleagues at the University of Texas showed that even the mere presence of a smartphone on the desk reduces cognitive capacity — not because the person uses it, but because suppressing the action requires effort (Ward et al., 2017).

An open space behind your back activates what Stephen Porges called neuroception — an unconscious assessment of environmental safety (Porges, 2011). The nervous system continuously checks: do I control what’s behind me? Can I predict what will happen? If the answer is “no,” the system remains in a state of low-grade vigilance. We don’t feel this as anxiety. We feel it as an inability to truly settle into work, as scattered attention, as a desire to get up and leave that arrives before we’re actually tired of the work itself.

All of these processes unfold below the threshold of awareness. We don’t decide whether to react. The body decides for us.

Why we stop noticing — and why it matters

The situation is complicated by another well-studied mechanism: habituation. A repeated stimulus gradually ceases to be consciously perceived. We get used to the noise, the light, the placement of objects. Thompson and Spencer described habituation as one of the simplest and most universal forms of learning: the organism stops responding to what it encounters again and again without significant consequences (Thompson & Spencer, 1966).

This is a necessary mechanism — without it, we would drown in sensory information. But it has a flip side. We stop being aware of the stimulus, yet the physiological response to it may persist. The noise you’ve “gotten used to” continues to raise cortisol levels. Cool-spectrum light after four in the afternoon continues to suppress melatonin production — by up to 81%, according to Harvard Medical School research (Lockley et al., 2003). The visual overload of your desk continues to create a background load on the attention system — even when the desk has long since seemed “normal” to you.

Nilli Lavie, studying selective attention, showed that under high perceptual load, the ability to filter distracting stimuli decreases (Lavie, 2005). An environment that already creates load simultaneously weakens the mechanism that could have protected against that load.

A person doesn’t experience all of this as separate effects. They experience the sum: general fatigue, a need for effort in work that shouldn’t be this hard, a sense that the day was grueling even though nothing extraordinary happened. And since the sources of the load have long ceased to be consciously perceived, the explanation shifts to the only thing that is perceived: oneself.

Didn’t sleep enough. Not disciplined enough. Getting older.

Perhaps. But perhaps it’s worth considering another possibility: that part of this fatigue is created not by you, but by what surrounds you. By what you’ve grown so accustomed to that you’ve stopped seeing it.

Why desk fatigue isn’t always about sleep

Robert Hockey, studying human behavior under suboptimal conditions, described a phenomenon he called compensatory control. A person is capable of maintaining productivity in an unfavorable environment — at the cost of additional internal effort. The formal output of work may remain stable for quite some time (Hockey, 1997).

This is important to understand, because this is where the trap appears. Productivity holds up, so everything seems fine. But the cost of compensation isn’t visible in work output. It’s visible elsewhere: in accumulating fatigue, in declining attentional stability by the end of the day, in the sense that work takes more out of you than it used to. In weekends that no longer restore. In vacations that end, but the tiredness doesn’t.

Bruce McEwen called this allostatic load — the slow wear on the body’s regulatory systems from chronic adaptation to conditions that are not optimal (McEwen, 1998). It’s not illness. It’s a background state that gradually reduces resilience to everything else — to stress, to change, to demands that used to come easily.

Stephen Kaplan, developing attention restoration theory, proposed an important distinction: an environment can demand directed attention — and thus fatigue it — or it can allow undirected, spontaneous attention — and thus restore it (Kaplan, 1995). This is why a walk in a park restores better than an hour on your phone — the natural environment doesn’t demand directed attention; it lets it rest.

A workspace, by definition, places demands on directed attention. But there is a difference between an environment that supports this process without adding to the load, and one that creates additional demands — demands that the person meets at the cost of the very resources meant for work and recovery.

What you can do about it

Start not with purchases or rearrangements, but with observation. For one workday, try noticing the moments when your attention drifts, when the urge to get up arises, when fatigue sets in. Not to control yourself, but to notice: is any of it connected to something in the space?

Below are several ergonomic workspace tips grounded in the research above. Each sounds simple, but each addresses a specific mechanism.

Light

Check whether the light at your desk is the same in the morning and the evening. If you have one lamp that stays on all day, it’s likely working against you after four o’clock. Cool (bluish) light in the morning supports alertness, but the same light in the evening suppresses melatonin and disrupts sleep preparation. The accumulated effect over several weeks is chronic fatigue that doesn’t resolve after a weekend.

What you can do: after 4 PM, switch to warm light. Bulbs with a color temperature of 2700–3000K (listed on the packaging) produce warm, yellowish light. Some desk lamps allow you to change the temperature — more convenient than keeping two lamps. The shift is subtle, but the brain reads it as a signal to wind down, and by evening the difference is noticeable.

The space behind you

Look at whether you can see the entrance to the room without turning your head. If there’s a door, hallway, or open space behind you, your nervous system is spending resources on background monitoring. You won’t feel this as anxiety, but you will feel it as an inability to truly focus.

What you can do: if you can turn your desk around, try it for one day. Many people notice the difference immediately — it becomes easier to stay on task, the urge to get up decreases. If turning the desk isn’t possible, even a small mirror in which the entrance is visible can help. The nervous system responds to visual control of the space, even when the control is indirect.

Your visual field

Look at your desk not as a desk, but as what your eyes see every time they leave the screen. How many objects are in your field of vision? Are any of them unrelated to work but attention-grabbing — a phone, mugs, stacks of paper, charging cables?

Each such object is a background request to the attention system. Individually, imperceptible. In sum, significant. Try removing everything from your desk that you don’t need right now — just for one workday. Not “organizing forever,” just for a day. And notice: did it become easier to hold focus? If so, visual load was part of the problem you were attributing to yourself.

Sound

Background noise is one of the factors we habituate to fastest. A refrigerator, a laptop fan, sounds from outside, a television in the next room — all of these stop being consciously perceived but continue to create load on the auditory attention channel. Research shows that even familiar background noise raises cortisol levels and reduces attentional stability during complex tasks.

What you can do: try working in silence for one day — no music, no “background” videos, windows closed. If complete silence is uncomfortable, white or pink noise generators (such as Noisli or myNoise) produce uniform sound that contains no information and therefore doesn’t load attention.

Body position

If you work on a laptop sitting flat on a desk, your eyes look down, your neck tilts forward, your shoulders round. This is not only a matter of back and neck health. The inclined posture reduces activation of the reticular activating system — the part of the brain that maintains alertness and readiness. After an hour or two in this position, what you feel is not pain but drowsiness and scattered attention.

What you can do: a laptop stand that raises the screen to eye level, and a separate keyboard. This is one of the few changes that works on both the physical and cognitive level simultaneously — an upright posture supports both body and attention.

The common thread

What unites all of these changes is that none of them require willpower, discipline, or motivation. They change the environment — and the environment begins to work for you rather than against you. Each one may seem minor on its own. But it’s precisely from such details that the feeling at the end of a workday is made — depletion or ordinary tiredness, emptiness or completion.

Try one change for one day. If you feel a difference, the environment was genuinely contributing to what you were taking for your own fatigue. And perhaps it’s worth looking at your workspace more carefully — not to overhaul everything, but to stop compensating for it with yourself.

Ergonomics, in its original sense, is not about the perfect chair. It’s about paying attention to the place where you spend a third of your life. And, perhaps, about giving yourself permission to consider that not everything you feel by the end of the day was created by you.

Anna Ammon — 30 years exploring how spaces shape people: from classical feng shui to neuroergonomics and environmental psychology.

References

Chapanis, A. (1949). Applied Experimental Psychology: Human Factors in Engineering Design. Wiley.

Kahneman, D. (1973). Attention and Effort. Prentice-Hall.

Simon, H. A. (1971). Designing organizations for an information-rich world. In M. Greenberger (Ed.), Computers, Communications, and the Public Interest (pp. 37–72). Johns Hopkins Press.

Gibson, J. J. (1979). The Ecological Approach to Visual Perception. Houghton Mifflin.

Thompson, R. F., & Spencer, W. A. (1966). Habituation: A model phenomenon for the study of neuronal substrates of behavior. Psychological Review, 73(1), 16–43.

Kaplan, S. (1995). The restorative benefits of nature: Toward an integrative framework. Journal of Environmental Psychology, 15(3), 169–182.

Hockey, G. R. J. (1997). Compensatory control in the regulation of human performance under stress and high workload. Biological Psychology, 45(1–3), 73–93.

McEwen, B. S. (1998). Protective and damaging effects of stress mediators. New England Journal of Medicine, 338(3), 171–179.

Lockley, S. W., Brainard, G. C., & Czeisler, C. A. (2003). High sensitivity of the human circadian melatonin rhythm to resetting by short wavelength light. Journal of Clinical Endocrinology & Metabolism, 88(9), 4502–4505.

Lavie, N. (2005). Distracted and confused? Selective attention under load. Trends in Cognitive Sciences, 9(2), 75–82.

Wickens, C. D. (2008). Multiple resources and mental workload. Human Factors, 50(3), 449–455.

Mark, G., Gudith, D., & Klocke, U. (2008). The cost of interrupted work: More speed and stress. Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, 107–110.

Porges, S. W. (2011). The Polyvagal Theory. W. W. Norton & Company.

Norman, D. A. (2013). The Design of Everyday Things. Revised and expanded edition. Basic Books.

Ward, A. F., Duke, K., Gneezy, A., & Bos, M. W. (2017). Brain drain: The mere presence of one’s own smartphone reduces available cognitive capacity. Journal of the Association for Consumer Research, 2(2), 140–154.