On June 17, 2025, Microsoft’s WorkLab division dropped a sobering number: the top 20% of Microsoft 365 users are hit with an average of 275 meetings, email, and chat notifications in a single 24‑hour window. The finding, published in the report “Breaking down the infinite workday,” puts hard data behind what many knowledge workers feel daily—the unrelenting ping of a workday that never really ends.

A Daily Deluge of Digital Interruptions

The WorkLab study examined anonymized activity across Microsoft 365, including Outlook emails, Teams chats, and calendar invites. For the most heavily pinged quintile of users, the count topped 275 per day. That’s roughly one distracting alert every five minutes over a 16‑hour waking span, though many arrive in tight bursts. Notably, the report doesn’t treat all pings equally: a quick “thumbs up” in Teams and a 40‑message email thread both count as signals vying for attention.

For anyone running Outlook, Teams, and Loop throughout the day, the number feels both shocking and familiar. These aren’t just passive notifications; each one invites a context switch—a decision to act, defer, or ignore. Cumulatively, that cognitive load erodes focus.

The Toll on Productivity and Well‑Being

Research beyond Microsoft has long linked frequent interruptions to higher stress and lower output. A 2018 University of California, Irvine study found it takes over 23 minutes to regain deep focus after a single interruption. Multiply that by 275 and the math becomes impossible: there simply aren’t enough hours. The WorkLab report doesn’t claim everyone in the top 20% is suffering, but it does sketch a stark picture of what Microsoft calls the “infinite workday”—and the people most caught in it are often managers, project leads, and cross‑functional contributors whose jobs revolve around coordination.

For home users, the figure may be lower, but the pattern is the same: the default settings of Microsoft 365 encourage an always‑on posture. Power users—those who live in Excel, run complex Outlook rules, or manage Teams channels—can easily tip into the overloaded bracket, often without realizing how many alarms they’ve enabled.

How We Got Here: The Rise of Always‑On Work

The collision of tools and culture didn’t happen overnight. Microsoft Teams, introduced in 2017, normalized persistent chat alongside email. The pandemic accelerated adoption, and features like @mentions, activity feeds, and mobile sync cemented the expectation of near‑instant response. Meanwhile, the “focus time” of old—the block you’d hold for deep work—has been carved up by recurring stand‑ups, check‑ins, and async threads.

Microsoft has not been blind to the problem. In 2020, the company rolled out “virtual commute” reminders and Viva Insights to nudge users toward healthier habits. In 2023, a system‑wide AI‑powered “Focus” experience arrived in Windows 11 and tied into Microsoft 365 to quiet notifications during designated periods. Yet the 2025 WorkLab data suggests the tide hasn’t turned; if anything, notifications have proliferated as more work streams move digital.

Taking Back Control: Practical Steps for Microsoft 365 Users

The report is a call to action. Fortunately, Microsoft 365 offers a suite of controls—many underused—that can dial back the noise. Here’s what you can do right now, with the exact settings to hit.

For Individual Outlook Users

  • Turn off Windows desktop notifications for new email. In Outlook, go to File > Options > Mail. Under “Message arrival,” uncheck “Display a Desktop Alert.” You’ll still see new mail in the folder list, but without the pop‑up.
  • Create focused rules to auto‑sort mailing lists and CC‑only email into folders that don’t trigger alerts. Right‑click a message, choose Rules > Create Rule, and disable notifications for that rule.
  • Use “Ignore” on noisy threads in the desktop app. Right‑click a conversation and select Ignore; all replies move to the Deleted Items folder.

For Microsoft Teams

  • Set quiet hours in Teams mobile: tap your profile picture > Notifications > Quiet hours. Block pings during evenings and weekends.
  • Customize channel notifications to Mentions only or Banner only. Right‑click a channel > Notifications to choose. For high‑volume teams, switch to Only show in feed.
  • Mute chat threads that don’t need real‑time attention. Hover over a chat, select More options (…) > Mute.
  • Manage activity feeds by filtering what appears. In Settings > Notifications, under “Activity,” toggle off reactions, mentions in channels, and broadcasts.

For Administrators and IT Pros

  • Push quiet‑time policies via Teams admin center: Teams admin center > Messaging policies > Global (Org‑wide default). Under “Quiet hours,” enforce a schedule that aligns with company norms.
  • Deploy Focus assist across the org using Windows Group Policy or Intune. In the Settings Catalog for Windows 10/11, configure System > Focus assist to automatically turn on during work hours and when duplicating your display (e.g., during presentations).
  • Educate employees with Microsoft’s own Viva Insights. Use the “Focus” plan template to suggest meeting‑free days or no‑notification blocks. Administrators can surface recommendations through the Viva Insights dashboard.
  • Audit and limit @mentions in high‑traffic channels. Team owners can restrict who can use @team and @channel mentions in Manage team > Settings > @mentions.

A Glimpse into Microsoft’s Own Modeling

The WorkLab report didn’t just recirculate old warnings; it modeled potential futures. By simulating what happens when a fraction of users adopt “focus time” habits—like blocking two hours of uninterrupted work—the data showed a 15–20% drop in daily notifications for those individuals. When teams collectively moved recurring meetings to a single day, the ripple effect reduced pings across the board. This isn’t just about individual willpower; it’s a system problem that responds to team‑level choices.

Still, the models are built on behavioral assumptions. Real adoption depends on how well users understand the knobs they can turn. And many of the most powerful settings remain buried in menus.

What to Watch Next

The report closes with a hint that Microsoft sees generative AI as a longer‑term answer. Copilot, now integrated into Word, Outlook, and Teams, can summarize email threads and draft replies, theoretically reducing the need to open every notification. Later this year, the company is expected to preview “AI‑first” inbox experiences that prioritize what matters and silence the rest. For now, though, the numbers are a blunt reminder: we built the infinite workday ourselves, and the tools to dismantle it are already in our hands.

— Learn more at Microsoft WorkLab (report expected to be publicly available).