CalendarTetris

business active Updated 2026-10-08

Currently active and in regular use across social platforms.

Also known as: ScheduleTetrisMeetingTetrisCalendar Tetris

Calendar Tetris (also schedule Tetris or meeting Tetris) is office slang for the puzzle of fitting meetings into a crowded calendar. Each meeting is a block dropped into the remaining gaps, and the result is a week packed edge to edge, usually with back-to-back calls and no time between them.

Origin

The metaphor borrows from Tetris, the puzzle game created by Soviet software engineer Alexey Pajitnov in the mid-1980s, in which falling pieces of four connected blocks (tetrominoes) are sorted into a pile and completed rows disappear. Calendar apps draw meetings as coloured rectangles stacked in a grid, so the comparison is visual as much as figurative. No source pins down the first use of the phrase; it circulates as informal workplace slang rather than a coined term.

How It’s Used

People use #CalendarTetris to complain about a day with no gaps, to joke about rescheduling one meeting and watching three others shift, or to describe the job of an assistant who juggles several executives’ diaries. The tag sits close to #ZoomFatigue, #DeepWork, #TimeBlocking and #AsyncWork, which name the problem’s costs and the usual counter-measures.

The best-known argument against a fragmented calendar predates the hashtag. In “Maker’s Schedule, Manager’s Schedule” (July 2009), Paul Graham describes the manager’s day as “cut into one hour intervals,” while makers “prefer to use time in units of half a day at least.” His conclusion: “A single meeting can blow a whole afternoon, by breaking it into two pieces each too small to do anything hard in.”

The Meeting Data Behind It

Measure (Feb 2020 → Feb 2021)Reported changeSource
Time spent in Microsoft Teams meetingsMore than doubled (2.5X) globallyMicrosoft Work Trend Index 2021
Average meeting length10 minutes longer, from 35 to 45 minutesSame report
Chats per Teams user per weekUp 45 percentSame report

The report, titled “The Next Great Disruption Is Hybrid Work—Are We Ready?”, compared collaboration trends in Microsoft 365 between February 2020 and February 2021, the first year of pandemic remote work.

Workarounds

Calendar software has added small defences against wall-to-wall meetings. Google Calendar’s Speedy Meetings setting, as Zapier describes it, ends 30-minute meetings five minutes early and longer meetings 10 minutes early, building a short buffer between blocks. Other common tactics include protected focus blocks and no-meeting days.

Sources

Frequently Asked Questions

What does calendar Tetris mean? +

It describes the work of slotting meetings into whatever gaps remain in a schedule, so the week ends up packed block against block like a game of Tetris, often with no breaks between calls.

Why do people complain about calendar Tetris? +

A packed calendar leaves no long stretches for focused work. Paul Graham's 2009 essay 'Maker's Schedule, Manager's Schedule' argues that a single meeting can blow a whole afternoon by splitting it into pieces too small to do anything hard in.

Did meetings really increase after 2020? +

Microsoft's 2021 Work Trend Index reported that time spent in Microsoft Teams meetings more than doubled (2.5X) globally between February 2020 and February 2021, and the average meeting grew from 35 to 45 minutes.

Sources & References

Explore #CalendarTetris

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