Key Takeaways
- A Harvard study of 27 CEOs found that they worked an average of 62.5 hours per week.
- The CEOs spent 72% of their work time in meetings and 28% working alone.
- Microsoft telemetry found that the highest-volume 20% of users received 275 meeting, email, or chat pings per day.
- Only 52% of executives in a McKinsey survey said their time largely matched their organization's strategic priorities.
- Strong scheduling support was reported by 85% of effective time managers, compared with 7% of ineffective time allocators.
Executive calendars often look full without showing whether leadership time went to strategy, decisions, or routine coordination. The best public time-use studies solve part of that problem by tracking behavior rather than asking executives to estimate a typical week.
The most detailed CEO study remains Harvard Business School research by Michael Porter and Nitin Nohria. It followed 27 CEOs for three months each and collected nearly 60,000 hours of data. The group is small and weighted toward large companies, but the study gives a clear baseline for how senior leaders divide their time.
Executive time management statistics at a glance
| Measure | Result | Source and scope |
|---|---|---|
| Average CEO workweek | 62.5 hours | Harvard study of 27 CEOs |
| Average weekday work | 9.7 hours | Same Harvard study |
| CEO work time in meetings | 72% | Same Harvard study |
| CEO work time alone | 28% | Same Harvard study |
| Microsoft 365 time spent communicating | 57% | Microsoft 2023 Work Trend Index |
| Respondents lacking uninterrupted focus time | 68% | Microsoft survey of 31,000 people |
| Heavy email users' weekly email time | 8.8 hours | Top quartile in Microsoft telemetry |
| Heavy meeting users' weekly meeting time | 7.5 hours | Top quartile in Microsoft telemetry |
| Daily meeting, email, and chat pings | 275 | Highest-volume 20% of Microsoft 365 users in 2025 telemetry |
| Executives whose time matched strategic priorities | 52% | McKinsey survey of 1,374 executives in 2011 |
| Effective time managers reporting strong scheduling support | 85% | Same McKinsey survey; 7% among ineffective time allocators |
Sources: Harvard Business Review's CEO time study, the Microsoft 2023 Work Trend Index, Microsoft's 2025 infinite workday analysis, and McKinsey's executive time management survey.
These figures describe different groups. The Harvard data concern CEOs. Microsoft's survey and product telemetry cover a wider working population. They should not be combined into a single executive average.
How long executives work
The Harvard CEOs worked an average of 9.7 hours per weekday. Their work continued outside the standard week: 79% worked on at least one weekend day, and 70% worked on vacation days during the study period. Across weekdays and other days, the average reached 62.5 hours per week.
Hours alone do not show the value of the work. A 60-hour week can still leave little room for decisions that require uninterrupted thought. The calendar mix matters more than its total length.
Meetings take most CEO time
The CEOs spent 72% of their working time in meetings. Only 28% was spent alone. Face-to-face interaction accounted for 61% of their work time, while electronic communication accounted for 24%.
Meetings are part of a CEO's job. They provide information, align senior managers, and maintain relationships. The risk comes from treating every meeting request as leadership work. A status update that another person can collect has a different value from a capital allocation decision or a conversation with a major customer.
The study also found that 32% of CEO meetings lasted one hour, while another 38% lasted longer. Duration is therefore a useful review point. Leaders can ask whether a recurring 60-minute block still needs its original length, attendance list, and frequency.
Communication competes with focus time
Microsoft's 2023 Work Trend Index provides a broader view of digital work. Across Microsoft 365 applications, the average employee in the study spent 57% of time communicating through meetings, email, and chat. The remaining 43% was spent creating in documents, spreadsheets, and presentations.
The survey included 31,000 people in 31 countries. Sixty-eight percent said they did not have enough uninterrupted focus time during the workday. Sixty-two percent said they spent too much time searching for information.
The heaviest email users, defined as the top quartile, spent 8.8 hours per week on email. The heaviest meeting users spent 7.5 hours per week in meetings. These are quartile figures, not averages for every worker or executive.
Microsoft also reported that 64% of respondents struggled to find enough time and energy to do their work. Those respondents were 3.5 times as likely to report difficulty with innovation and strategic thinking. This is an association in survey data, not proof that communication volume caused the difference.
Microsoft's June 2025 analysis adds a direct measure of interruption volume. Its highest-volume 20% of users received 275 meeting, email, or chat pings over a 24-hour day. During an eight-hour core workday, the average interval between pings was two minutes. The calculation counts incoming pings, not observed attention switches, and it describes the most interrupted fifth of users rather than the typical employee.
Strategic work competes with incoming demand
McKinsey surveyed 1,374 executives at general manager level or above in November 2011. Only 52% said their time largely matched their organization's strategic priorities, and nearly half said they did not spend enough time guiding strategic direction.
The small group who were very satisfied with their time allocation spent about two-thirds of their time on four activities: business and operating decisions, people management, direction and strategy, and external stakeholders. McKinsey did not publish a universal target for strategy hours. Its result is more useful as an alignment measure: whether calendar time follows the priorities the organization says matter.
What belongs on an executive calendar
Porter and Nohria separated work that advances an explicit agenda from work that reacts to incoming demands. Their findings support a practical calendar test: each recurring block should have a clear connection to an organizational priority or a relationship that only the executive can maintain.
Work that commonly requires executive judgment includes:
- choosing strategy and allocating resources;
- selecting and coaching senior leaders;
- handling major customer, investor, or board relationships;
- setting operating standards and resolving decisions that cross functions.
Scheduling, document preparation, routine follow-up, inbox sorting, and meeting logistics still need an owner. They usually do not need to consume the executive's preparation time. An executive assistant can own that coordination while the executive keeps responsibility for the decision.
McKinsey's survey found a large support gap. Eighty-five percent of executives classified as effective time managers reported strong support for scheduling and time allocation, compared with 7% of ineffective time allocators. This is an association, not a measured estimate of hours saved or proof that administrative support caused better time use.
A simple delegation calculation
Time recovery should be measured with observed hours rather than a generic claim. Suppose an executive records six weekly hours spent arranging meetings, formatting briefs, following up for updates, and processing routine email. Moving four of those hours to trained support returns 200 hours over a 50-week year.
That calculation is not a revenue forecast. The value depends on what replaces the administrative work. Time moved to customer decisions, hiring, or product strategy can matter. Time that simply creates more meetings does not.
Teams considering support should begin with a two-week calendar and inbox audit. Label each activity as executive judgment, relationship ownership, preparation, coordination, or administration. The last three categories often contain work suitable for an executive assistant or virtual assistant.
How to use these benchmarks
Compare like with like. The 72% meeting figure comes from CEOs at large companies and should not be treated as a target for every founder. Microsoft's 57% communication figure covers a broader group and measures activity inside selected applications, not the entire workday.
Three measures are useful inside one organization:
- Track the share of leadership hours tied to stated priorities.
- Record uninterrupted blocks long enough for analysis and writing.
- Measure hours spent on coordination that another trained person could own.
Review the measures monthly. A calendar can drift quickly when recurring meetings remain after a project, reporting line, or decision process changes.
Frequently asked questions
How many hours do CEOs work each week?
The Harvard study reported an average of 62.5 hours per week among 27 CEOs. Because the sample focused on leaders of large companies, it is a benchmark rather than a universal estimate.
What percentage of CEO time is spent in meetings?
The same study found that CEOs spent 72% of work time in meetings and 28% working alone.
How much focus time do employees have?
Microsoft did not publish one universal number of focus hours. It reported that 68% of survey respondents felt they lacked enough uninterrupted focus time. The distinction matters because a reported shortage is not the same as a measured hourly average.
Which executive tasks can be delegated?
Calendar administration, meeting preparation, routine research, inbox sorting, document formatting, and follow-up tracking are common candidates. Strategy, final decisions, senior leadership, and sensitive relationships should remain with the executive.
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