Survey or industry report
Work Trend Index 2023: Will AI Fix Work?
Microsoft Work Lab, 2023
Read the originalRead on October 19, 2026
- What it is
- Microsoft's own report on its 2023 Work Trend Index, which combined a survey of 31,000 full-time workers in 31 markets with usage signals from Microsoft 365. It states that the heaviest email users, the top 25 percent of commercial Microsoft 365 users, spend 8.8 hours a week on email.
- How much weight it carries
- Published by the company that built the apps it measured, so the usage figures come from its own telemetry and are not independently audited. The 8.8-hour figure describes the heaviest quarter of users, counts reading and writing email, and covers a 28-day period ending in March 2023, excluding weekends. The page states no head count for it and no average.
Facts taken from this source
- Microsoft's 2023 Work Trend Index found that the heaviest email users, the top 25 percent of its commercial Microsoft 365 users, spend 8.8 hours a week on email.
“The heaviest email users (top 25%) spend 8.8 hours a week on email” (Introduction, paragraph on time spent (before 'Three findings'))