How to Improve Focus at Work: The Structural Fixes That Beat Willpower.
By Peter Benson, Cognitive Enhancement Researcher · Updated November 2026 · Citations re-verified
Short answer: The answer to how to improve focus at work is structural, not willpower: batch email into a few set times, protect an uninterrupted block for demanding work, keep your phone out of the room, and agree when you can be unreachable. Interruptions and task-switching carry real costs; supplements play a minor role.
⚕️ Educational information, not medical advice — full disclaimer. This page contains affiliate links; if you buy through them, NeuroEdge Formula earns a small commission at no extra cost to you. Persistent, severe focus difficulties can have medical causes and deserve proper assessment.
If you struggle to focus at work, “try harder” has probably failed you, and for good reason. The modern workplace is close to perfectly designed to prevent sustained attention: notifications, open-plan noise, back-to-back messages and a culture that treats instant availability as a virtue. Improving focus at work is mostly about removing those obstacles, not forcing concentration against them.
This guide on how to improve focus at work covers the research on task-switching and interruptions, including one famous number that doesn’t hold up, why common office designs work against focus, and the structural changes with the best evidence. It sits in the Focus & Productivity hub. Severe, persistent focus problems across your whole life are a different matter, covered near the end.
On this page
- 7 practical ways to improve focus at work
- What is attention residue, and why does task-switching cost so much?
- Does it really take 23 minutes to refocus after an interruption?
- Why does the modern office work against focus?
- How to improve focus at work: the changes that help most
- How to improve focus at work: claims ranked by evidence
- If you do reach for a supplement
- When is poor focus more than a noisy office?
- Frequently asked questions
7 practical ways to improve focus at work
- Batch your email into set windows, where your role allows.
- Protect focused time for tasks that need sustained concentration.
- Put your phone out of sight, ideally out of the room, during that time.
- Turn off non-essential notifications during demanding tasks.
- Keep a distraction notepad for stray thoughts and small tasks.
- Agree communication expectations with colleagues, including how to reach you urgently.
- Review your results over two weeks: work finished, interruptions and how focused you felt.
These are informed by research on attention, interruptions and workplace stress, but not every one has been tested in a controlled workplace trial. The sections below explain the evidence behind each.
What is attention residue, and why does task-switching cost so much?
When you switch from one task to another, part of your attention can stay on the task you left. In two experiments, management researcher Sophie Leroy found that people struggled to move their attention away from an unfinished task, and their performance on the next task suffered. Finishing the first task wasn’t enough on its own: people disengaged best when they had finished it under some time pressure (Leroy, 2009).
Not every switch costs the same: the effect is strongest when you leave something unfinished. This changes how to think about “just quickly checking” email mid-task. The glance itself takes seconds, but if it opens a new, unfinished thread, some of your attention stays there when you return. Repeated through the day, that leaves you working with less than full attention on anything. For the wider picture, see digital distraction and the brain and the cost of multitasking.
Does it really take 23 minutes to refocus after an interruption?
You’ve probably seen the claim that refocusing takes “23 minutes and 15 seconds”. It’s widely quoted as a lab finding, but that exact figure isn’t reported in the published studies it’s usually attributed to; it appears to be a rounded summary from interviews about the research.
The underlying research is real. In a field study of 24 information workers observed over 700 hours, people spent about 11 minutes on a piece of work before switching or being interrupted. When interrupted work was resumed the same day, it took on average about 25 minutes, with very wide variation, and people typically did more than two other things in between (Mark, Gonzalez & Harris, 2005). That’s the time until people returned to a task, including the other work they did meanwhile, not the time the brain needs to regain concentration. In a later lab study, interrupted people completed tasks slightly faster but reported significantly more stress, frustration, effort and time pressure (Mark, Gudith & Klocke, 2008).
So the honest takeaway isn’t a magic number. Interruptions carry a real cost in recovery time and stress. Stress matters here because even mild, uncontrollable stress can quickly impair the prefrontal cortex, the region that supports planning and holding a goal in mind (Arnsten, 2009).
Why does the modern office work against focus?
Email and messaging are the first culprit. In a two-week field experiment with 124 adults, the same people checked email either three times a day or as often as they liked, in random order. Daily stress was lower in the limited week, and people felt less distracted by email. Productivity and sleep didn’t change directly, though lower stress was linked with modestly better self-rated productivity (Kushlev & Dunn, 2015). About two-thirds of participants were students, so office workers may differ.
Open-plan offices are the second. In two field studies of companies moving to open layouts, measured with wearable sensors and message data, face-to-face interaction fell by about 70% while email and instant messaging rose (Bernstein & Turban, 2018). Removing walls didn’t make people talk more; it pushed more communication onto screens, which brings its own stream of interruptions. The study measured how people communicated, not their concentration, and it covered two companies, so it doesn’t show that every open-plan office harms focus.
These are structural problems, which is good news: they have structural fixes that work regardless of how disciplined you feel on a given day.
How to improve focus at work: the changes that help most
Batch communication. Check email and messages at a few set times, with notifications off in between. This is the change with the most direct evidence, from the email experiment above.
Protect one uninterrupted block. Set aside a block for your most demanding task, ideally when you’re freshest. No block length has been established as best; many people use 60 to 90 minutes, and some prefer shorter timed blocks such as the Pomodoro technique. See deep work for more.
Remove the phone. Out of reach, and ideally out of the room. Removing a tempting distraction is easier than resisting it; the research on phone presence, including mixed replications, is covered in the dopamine detox myth.
Park stray thoughts. Keep a notepad for things that pop up mid-block and deal with them in your next communication window, so they don’t become new unfinished threads.
Agree norms in advance. Tell your team when you check messages and how you signal a focus block. Being briefly unreachable works better when it’s expected. These are practical applications of the research rather than individually tested interventions.
How to improve focus at work: claims ranked by evidence
🟢 Stronger or replicated evidence · 🟡 Limited, mixed or preliminary evidence · 🔴 Not established or not supported
Worked example — a protected morning in an open-plan office
A method illustration, not a tested programme.
The day before. You tell your team you check messages at 11:00, 14:00 and 16:00, and that headphones on means a focus block.
09:00. Notifications off, phone in your bag in another room, one document open. This is the protected block for the report due Thursday.
09:25. A colleague asks if you’ve got a second. You say, “Can I find you at 11?”, write their name on your notepad, and go back to the document.
09:40. You remember you haven’t replied to Sam. Instead of opening email, you write “reply Sam” on the pad.
11:00. You process the pad in one pass: reply to Sam, find your colleague, first inbox check of the day. The report got one unbroken block instead of several fragmented ones.
Worked examples — applying the evidence to four situations
If your role needs fast replies (customer service, healthcare, management): you may not be able to go unreachable. Shorten the gaps between communication windows rather than dropping them, agree an urgent channel or a colleague who covers, and save protected time for whatever part of the day is quietest, even if it’s only 20 to 30 minutes.
If you work in an open-plan office: use headphones or a visible signal for focus blocks, and book a quiet room for your most demanding task if one exists.
If you work from home: the phone and inbox are usually the main distractions; the same batching and phone-out-of-the-room rules apply.
If focus problems follow you everywhere, not just at work: structural fixes may not be enough; see the section below and focus problems and ADHD.
The NeuroEdge Formula Workplace Focus Self-Testing Framework
Four structural changes that remove obstacles rather than demanding more willpower. A practical routine, not a tested programme.
1. Batch
Check email and messages at set times, notifications off in between.
2. Protect
One uninterrupted block for your most demanding task, at a length that suits you.
3. Remove
Phone out of reach, ideally out of the room, during focus blocks.
4. Signal and review
Agree your communication windows with your team. After two weeks, compare how much demanding work you finished; an informal comparison can’t prove cause.
To make the two-week review concrete, a simple log helps. It’s a personal tracking exercise, not a validated assessment or a controlled experiment.
| Measure | Week 1 | Week 2 |
|---|---|---|
| Unplanned interruptions per day | Record | Record |
| Focus blocks completed | Record | Record |
| Priority tasks finished | Record | Record |
| Self-rated focus (1–10) | Record | Record |
| Self-rated stress (1–10) | Record | Record |
Peter’s Testing Notes
A personal impression, not tracked data
The change that did the most for my workplace focus was simple: I stopped trying to resist my phone and started removing it. Face-down on the desk wasn’t enough; in another room, the pull essentially went away.
The second thing that mattered more than I expected was a paper pad. When a thought or small task pops up mid-block, writing it down to deal with later keeps it from turning into a new unfinished thread.
On supplements: I use L-theanine and caffeine on demanding focus mornings, and the calm-alert feel is real for me, but it’s a modest tailwind, not a rescue. On a chaotic day, no capsule saves my focus; the structural changes do the heavy lifting. None of this was measured.
If you do reach for a supplement
The structural fixes matter far more than anything you can buy. If you want modest support, L-theanine with caffeine has the most relevant human evidence. In one double-blind crossover trial of 27 people, 50 mg of caffeine with 100 mg of L-theanine improved speed and accuracy on an attention-switching task and reduced distraction at 60 minutes, though the trial was small and run by Unilever researchers (Owen et al., 2008). The trial tested those two ingredients over a few hours, not any commercial product, and it doesn’t show effects on workplace productivity. Products with extra ingredients need to be judged on their own, because evidence for individual ingredients doesn’t establish what a finished formula does. See the L-theanine and caffeine guide for the fuller picture. Check with a doctor or pharmacist first if you’re sensitive to caffeine, pregnant or take regular medication.
How products are chosen: affiliate products appear only after the evidence section is written, and are limited to ingredients with some human evidence. The affiliate relationship doesn’t change the conclusion that structure matters more than supplements.
Peter’s pick
Performance Lab Caffeine 2
Each capsule combines 50 mg of natural caffeine with 100 mg of L-theanine, the doses used in the trial above, plus L-tyrosine and B vitamins. I use it on demanding focus mornings when I want the combination without coffee.
Shop at Performance Lab →For stress load
Nootropics Depot Rhodiola Rosea
If stress rather than distraction is what erodes your focus, Rhodiola is the more relevant option, though its trials are small and mixed. See the Rhodiola guide for the evidence.
Shop at Nootropics Depot →When is poor focus more than a noisy office?
Everything above assumes ordinary, environment-driven focus loss, the kind that improves once you change the structure. If difficulty concentrating is severe, long-standing and present across your whole life rather than just at a distracting desk, that’s different. Persistent, pervasive focus problems can be part of ADHD, and can also accompany anxiety, depression or poor sleep. They deserve a proper assessment from a qualified healthcare provider; the guide on focus problems and ADHD covers where that line sits.
Key takeaways
| → | Workplace focus loss is mostly structural, so change the environment rather than relying on willpower. |
| → | Switching away from unfinished tasks has a cost: attention residue lowers performance on the next task. |
| → | “23 minutes 15 seconds” isn’t a study finding, but interruptions do delay resumption and raise stress. |
| → | Batch email, protect a block, remove the phone and set norms; email batching has the most direct evidence. |
| → | Supplements play a minor role, and severe, pervasive focus problems deserve an assessment. |
Frequently asked questions
Why can’t I focus at work even when I want to?
Usually because the environment works against you: notifications, an always-open inbox, open-plan noise and pressure to be instantly available. Switching away from unfinished tasks also leaves attention residue, so brief distractions degrade the work you return to.
Does it really take 23 minutes to refocus after an interruption?
Not as a measured figure. A field study found interrupted work was resumed after about 25 minutes on average, with very wide variation, and a lab study found interruptions raise stress. Treat interruptions as costly, but don’t quote the exact number as science.
What’s the single most effective change?
Batching email into a few set times has the most direct evidence: it lowered daily stress in a field experiment. Keeping your phone out of the room during focus blocks is a simple companion change.
Do focus supplements work?
L-theanine with caffeine has small human trials showing short-term benefits for attention. The effect is modest and can’t make up for a fragmented working day.
When should I see a doctor about focus problems?
When the difficulty is severe, long-standing and present across your whole life, not just at a distracting workplace, or when structural changes don’t help and it’s affecting your work or wellbeing.
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⚕️ Educational Information, Not Medical Advice
This article is educational and is not medical advice. I’m a cognitive enhancement researcher, not a medical doctor. The guide covers lifestyle habits as well as supplements. Supplements can interact with medicines; consult a qualified healthcare provider before use, particularly if you take prescription medicines or are pregnant or breastfeeding. Persistent, severe focus difficulties can have medical causes, including anxiety, depression, sleep problems or ADHD, and deserve proper assessment.
Scientific references
1. Leroy, S. (2009). Why is it so hard to do my work? The challenge of attention residue when switching between work tasks. Organizational Behavior and Human Decision Processes, 109(2), 168–181. DOI: 10.1016/j.obhdp.2009.04.002
2. Mark, G., Gonzalez, V. M., & Harris, J. (2005). No task left behind? Examining the nature of fragmented work. Proceedings of CHI 2005, 321–330. PDF
3. Mark, G., Gudith, D., & Klocke, U. (2008). The cost of interrupted work: more speed and stress. Proceedings of CHI 2008, 107–110. DOI: 10.1145/1357054.1357072
4. Arnsten, A. F. T. (2009). Stress signalling pathways that impair prefrontal cortex structure and function. Nature Reviews Neuroscience, 10(6), 410–422. PMID: 19455173
5. Kushlev, K., & Dunn, E. W. (2015). Checking email less frequently reduces stress. Computers in Human Behavior, 43, 220–228. DOI: 10.1016/j.chb.2014.11.005
6. Bernstein, E. S., & Turban, S. (2018). The impact of the ‘open’ workspace on human collaboration. Philosophical Transactions of the Royal Society B, 373(1753), 20170239. DOI: 10.1098/rstb.2017.0239
7. Owen, G. N., Parnell, H., De Bruin, E. A., & Rycroft, J. A. (2008). The combined effects of L-theanine and caffeine on cognitive performance and mood. Nutritional Neuroscience, 11(4), 193–198. PMID: 18681988
Cognitive Enhancement Researcher | 18+ Years Independent Research
Peter is not a clinician; this guide is educational, not medical advice. It was rewritten in November 2026 to correct how the attention-residue and interruption studies were described, add the limits of the email and open-office studies, update the product details and affiliate link, and replace the old sign-up box. Read about how NeuroEdge Formula evaluates research.
Last reviewed: November 2026 | Educational content only. Not medical advice.
