When teams treat every tap on the shoulder as urgent, time does not get spent. It disappears. A true request always has a by when.
The most expensive meeting in most companies never hits the calendar.
It starts with four words. Hey, you got a minute?
That minute is almost never a minute. It is a context switch. The person who was finally inside the work has to climb out, answer something that felt urgent to you, then find their way back. Most teams treat that as courtesy. The research treats it as a tax.
minutes to return to the original task after an interruption
Gloria Mark's team at UC Irvine timed knowledge workers during real workdays. After an interruption, people usually touch about two other tasks before returning to the original one. They switch activities every 3 minutes and 5 seconds, and jump working spheres every 10.5 minutes. Roughly 44% of interruptions are self-inflicted. A glance is not the same as a break in the thread of work. The twenty-three-minute figure is about getting all the way back. "Got a minute?" is designed to break that thread.
Attention on a single screen has fallen from about 2.5 minutes in 2004 to about 47 seconds in recent years.
Microsoft's 2025 Work Trend Index found employees using Microsoft 365 are interrupted every two minutes by meetings, emails, or notifications. About 275 pings in an eight-hour workday. 57% of meetings were ad-hoc calls without calendar invites. 50% of meetings occur during peak focus windows (9-11 a.m. and 1-3 p.m.). 48% of employees described their work as chaotic and fragmented.
average gap between pings in core hours
interruptions per eight-hour day
The average knowledge worker now spends around eleven hours a week in scheduled meetings, roughly twenty-eight percent of a standard week. Microsoft's earlier Work Trend Index found people spending fifty-seven percent of their time communicating in meetings, email, and chat, and only forty-three percent creating anything. Asana's Anatomy of Work put a different label on the same pattern: most of the day is "work about work." Status. Searching. Coordinating. Not the job people were hired to do.
The American Psychological Association, summarizing task-switching experiments, has put the productivity hit as high as forty percent on complex work.
When everything is urgent, the calendar and the hallway start to look the same. Both steal the only asset that compounds: an unbroken hour.
A request with no "by when" is not a request. It is an open loop. The receiver has to guess priority. Guessing is expensive. They either drop what they were doing, or they carry the unfinished ask as background noise. Sophie Leroy called that leftover pull attention residue. You can leave the conversation and still not be back in the work.
A true request always has a by when.
Not "when you get a chance." Not "this is important." A time. Can you look at this by Thursday at noon. I need a decision before the two o'clock. If Friday is fine, say Friday. If it cannot wait two hours, say that too, and own the interruption. The date is the gift. It lets the other person put the work in the right place instead of treating your tap like a fire.
The behavior change is one sentence. Train it until it feels rude to omit.
Do not break deep work for something that can live in a message with a deadline. Microsoft's own data says most "meetings" are already unscheduled. That is the "got a minute" problem wearing a headset.
Stop calling things urgent unless the cost of waiting is real. If everything is a fire, people stop smelling smoke. They also stop finishing the work that would have prevented the next one.
Never make a request without a by when. "Can you review this?" becomes "Can you review this by Wednesday at three, and if that slips the client date is Friday." One sentence. Two pieces of information. Suddenly the team can sequence instead of react.
You will still have real emergencies. Those are rare. Most of what feels urgent is someone else's lack of planning arriving at your desk. Put a time on the ask and the fake emergencies shrink. Focus time gets long enough to matter. Work starts leaving the building finished.
The cost of "got a minute" was never the minute. It was the twenty-three minutes after, multiplied by a culture that treats every tap as a crisis.
Change the sentence. Time stops vanishing.
Gloria Mark, Daniela Gudith, and Ulrich Klocke. "The Cost of Interrupted Work." CHI, 2008. Mark's widely cited figure: 23 minutes 15 seconds to return to the original task; people typically complete about two intervening tasks first.
Gloria Mark, Attention Span (2023). Screen attention falling from about 2.5 minutes in 2004 toward about 47 seconds in later measurements.
Microsoft Work Trend Index (2023). Knowledge workers spend about 57% of time communicating and 43% creating.
American Psychological Association summary of task-switching research (Rubinstein, Meyer, and Evans). Productivity losses on complex work of up to 40%.
Asana, Anatomy of Work. Large share of the day spent on "work about work."
Gloria Mark, interview with Gallup Management Journal, "Too Many Interruptions at Work?" Activity switches every 3 minutes 5 seconds; working-sphere switches about every 10 minutes 29 seconds; 44% of interruptions self-initiated.
Microsoft Work Trend Index special report, "Breaking Down the Infinite Workday" (2025). Interruptions about every 2 minutes in core hours (~275 per day); 57% of meetings ad hoc; half of meetings in peak focus windows; 48% of employees describe work as chaotic and fragmented.
Fellow / Laxis meeting benchmarks (2024-2026). Average knowledge worker around 11.3 hours per week in meetings, roughly 28% of the workweek.
Sophie Leroy, "Why Is It So Hard to Do My Work?" Organizational Behavior and Human Decision Processes. Attention residue after unfinished or switched tasks.
The purpose is diagnosis, not performance. We will tell you what we see, including when what you need is not us. If there is a fit, we say so directly. If there is not, we say that too.
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