In a February 2025 internal memo, Google co-founder Sergey Brin recommended that employees working on the company’s Gemini and related artificial-intelligence efforts come to the office at least every weekday and work about 60 hours a week. He called 60 hours the “sweet spot of productivity.”
That was a recommendation to Google’s AI workforce—not a company-wide announcement requiring every Google employee to work five days in the office or 60 hours a week. Contemporary reporting said the formal policy for many corporate employees remained at least three in-office days per week.
What Sergey Brin actually recommended
Reports based on the internal memo said Brin urged Gemini employees to:
- Be in the office “at least every weekday.”
- Work approximately 60 hours per week.
- Increase urgency rather than doing only the minimum required work.
- Push harder because Google was competing to lead the race toward artificial general intelligence (AGI).
Brin reportedly characterized 60 hours as the “sweet spot of productivity.” The memo also warned that working beyond 60 hours could raise burnout risk, so the message was not an endorsement of unlimited hours.
The report was published on February 27–28, 2025, after the memo was viewed by The New York Times and covered by outlets including Computerworld.
Who received the message?
The audience was employees working on Google’s AI models and applications, particularly the Gemini organization. It was not reported as a message to every Google employee, and it was not a public directive to contractors, all engineers or all offices.
Brin is a Google co-founder, not the company’s chief executive. Sundar Pichai became CEO in 2015. Brin’s continuing involvement in AI gives his recommendation influence, but the available reports do not establish that he was issuing a binding human-resources order. Ars Technica separately described Brin’s active participation in Google’s AI work.
Was Google’s official policy changed?
No formal company-wide policy change was reported as a result of the memo. At the time, coverage described Google’s policy for many corporate employees as requiring at least three days per week in the office. Brin’s proposed weekday attendance therefore went beyond that reported baseline. A company spokesperson did not confirm a new five-day or 60-hour mandate in contemporaneous coverage by TechCrunch and CoStar.
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| Claim | Status |
|---|---|
| Brin recommended weekday office attendance | Reported from the internal memo |
| Brin called 60 hours the productivity “sweet spot” | Reported statement attributed to Brin |
| Google required all employees to work 60 hours | Not established |
| Google required all employees to be in the office five days | Not established |
| The memo targeted Gemini and other AI staff | Reported |
| The memo was an official company-wide policy | Incorrect or unsupported |
The available source set, current through August 18, 2026, confirms the original recommendation and the lack of an announced policy change at the time. It does not establish that Brin’s suggestion later became a Google-wide rule.
Why Brin argued for more intensity
The memo appeared during intense competition among Google, OpenAI, Anthropic and other AI companies. Brin’s argument was strategic: Google had substantial technical resources, but needed faster collaboration and greater effort to improve its chances of leading in AGI. Coverage by CoStar described office attendance as part of that push.
That is Brin’s rationale, not evidence that office attendance or longer workweeks automatically produce better AI systems. Research work, software engineering and model development also depend on documentation, management, tools and the quality of decisions.
What a 60-hour week means in practice
If all 60 hours were spread across five weekdays, the arithmetic is about 12 hours per day—roughly 50% more time than a 40-hour week.
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Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →- The memo did not establish that employees had to spend exactly 12 hours physically in an office each day.
- It did not specify a time-tracking system, weekend schedule or enforcement process.
- “At least every weekday” means five or more office days in an ordinary week, but it does not define daily hours.
- A temporary launch push is different from a permanent expectation.
Time at a desk, time in meetings, on-call time and uninterrupted technical concentration are not interchangeable. A 60-hour total therefore cannot by itself show 60 hours of productive work.
Is 60 hours a proven productivity optimum?
No. The reporting provides no published Google study or independent evidence establishing 60 hours as a universal productivity maximum. “Sweet spot” should be presented as Brin’s judgment from an internal memo, not as a scientific finding.
Longer schedules can create diminishing returns. Fatigue may impair concentration, judgment and error detection—particularly consequential in research and software engineering. Brin’s reported warning about burnout beyond 60 hours acknowledges one risk, but does not demonstrate that a 60-hour norm is sustainable or optimal.
Does five-day office attendance improve AI development?
The answer depends on how a team works. Supporters can point to:
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- Faster informal communication and easier whiteboarding.
- More spontaneous problem-solving among closely coupled specialists.
- Greater overlap on urgent priorities.
There are also substantial trade-offs:
- Many coding, evaluation and analysis tasks can be performed remotely.
- Long commutes reduce available energy and working time.
- Office environments can add interruptions and meetings.
- A five-day rule can shrink access to geographically distributed talent.
- Collaboration quality depends on team design and documentation, not merely physical proximity.
Physical presence can become a proxy for commitment even when an employee’s output is strong. That is a management choice, not a guaranteed productivity intervention.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Employee and management implications
A sustained 60-hour expectation could affect burnout, retention and recruiting. It may also fall unevenly on caregivers, disabled workers and employees with long commutes. Managers would need to distinguish a temporary project surge from a standing norm and make clear whether exceptions exist for health, disability, family responsibilities or location.
Several practical questions remain unanswered by the published reports:
- Did a team leader convert the recommendation into a written requirement?
- Were hours tracked?
- Did performance reviews or promotion criteria change?
- Did it apply to researchers, engineers, contractors or only a particular project?
- Were employees expected to be physically present for 12 hours, or merely to work 60 hours from any location?
Those details determine whether the memo was operationally meaningful. The reporting does not resolve them.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWhy headlines caused confusion
Short headlines can turn an influential founder’s recommendation into an apparent company order. They can also omit that the audience was Gemini and AI staff, present “sweet spot” as an empirical fact, or leave out the burnout caveat. The more precise description is narrower: Brin urged a specific AI workforce toward weekday office attendance and roughly 60-hour weeks, while Google’s reported formal policy had not been replaced.
Public discussion focused on the tension between developing automation and asking people to work longer hours, the possible return of high-intensity Silicon Valley norms, and the gap between an executive recommendation and an enforceable employment requirement. Aggregations such as Techmeme’s February 2025 coverage show the breadth of that debate, but do not establish representative employee opinion.
The bottom line
Sergey Brin recommended that Google’s Gemini-focused AI employees be in the office every weekday and work about 60 hours a week, describing 60 hours as his productivity “sweet spot.” The February 2025 memo was not reported as a company-wide Google policy, did not require all employees to work 60 hours, and does not prove that 60 hours is scientifically optimal. Whether it changed any team’s actual schedule, evaluation system or enforcement practices remains unclear.
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