Multitasking: The Worst (And Most Common) Work Habit

Imagine two women named Fran and Debra who each decide one afternoon to go for a three-mile trail run in the woods. They each plan to run by themselves. They are equally fast runners who are each capable of completing this distance in 30 minutes.

slow-andsteady-wins-race-Leibman-PeteFran gets changed at her office, warms up for five minutes and departs on her run at 2:00 p.m. She is in the zone the entire time and finishes even faster than usual, at 2:29 p.m.

Debra gets changed, warms up, and departs at the same time, but her run ends up quite different. Four minutes after she starts, she stops to respond to a text from a friend. Six minutes after that, she stops to speak with a co-worker who is also out for a run. Seven minutes after that, she stops to respond to an unexpected call from another co-worker. As a result, her run takes over an hour to finish.

Fran’s run is your workday when you focus intensely on one task at a time. Debra’s run is your workday when you multitask and allow yourself to be disrupted by incoming messages, office drop-ins, and unscheduled phone calls. Multitasking is the worst (and most common) work habit in today’s workplace.

Why is Multitasking so Bad for Your Productivity?

Despite what many people believe, multitasking decreases (not increases) your productivity. Research has proven this over and over.

For example, one study analyzed what happened when a group of Microsoft employees were interrupted by emails or instant messages. On average, the workers took 15 minutes to get back to important tasks each time that they were disturbed, as the distractions generally led them to reply to other messages and/or to visit various web sites unrelated to the task that they had been focused on before the distraction [1].

Other research has demonstrated that multitasking could change your brain and make it even harder for you to be able to focus in the future. In other words, chronic multitasking trains your brain to be distracted.

A study by the University of Sussex compared the brains of “media multi-taskers” (people who used multiple media devices at the same time) with the brains of those who only use one device occasionally. While the study demonstrated a link and not causality, they found the multi-taskers had lower gray-matter density in a part of the brain that is responsible for various cognitive and emotional control functions [2].

Multitasking reduces your performance on virtually every kind of task … including your ability to multitask!

Dr. Clifford Nass (a deceased Stanford University sociologist) studied this topic before he passed away. As he said during an interview in 2013, “People who multitask all the time can’t filter out irrelevancy. They can’t manage a working memory. They’re chronically distracted. They initiate much larger parts of their brain that are irrelevant to the task at hand … they’re even terrible at multitasking. When we ask them to multitask, they’re actually worse at it.” [3]

If Multitasking is So Bad, Why Do We Do It?

Today’s work environment and social environment encourages excessive multitasking. Laptops, smartphones, and other forms of technology clearly make our lives better in many ways. However, they also discourage us from concentrating on one task at a time. For example, a 2013 study commissioned by Nokia found that the average person checks his or her cell phone 150 times a day [4]. That’s once every six to seven minutes, on average, during waking hours. Social media, personal email accounts, and instant messaging platforms just make matters even worse.

If you are a chronic multi-tasker, it’s not because of some inborn trait. It’s because you have merely formed a negative “Habit Loop” around multitasking.

The #1 Way to Stop Multitasking

Keep your email and social media accounts closed, and keep your phone off, on airplane mode, or not accessible when you want to concentrate. Few incoming emails and calls need to be handled within seconds. You could still check your inboxes and devices every 30 or 60 minutes, if you feel compelled to do so. What you do not want to do is leave them open, buzzing, notifying, and interrupting you all day long.

Keeping your social media, inboxes, and devices closed, off, or not easily accessible is an example of removing the cue. This is a habit-breaking strategy that I wrote about here. In this case, the cue is an incoming email, text, notification, or call that triggers a bad habit to break your concentration and deal with the message immediately. Rather than try to resist the temptation to deal with an incoming message, why not remove the temptation altogether?

More than once while finishing the manuscript for my book Work Stronger, my brother left me a voicemail complaining that my phone was off. He said this made it impossible to reach me live. Each time that I called him back, I reminded him that was the point.

This article was originally published on

References for this article:

  1. Steve Lohr, “Slow Down, Brave Multitasker, and Don’t Read This in Traffic,” New York Times, March 25, 2007,
  2. Jacqui Bealing, “Brain scans reveal ‘grey matter’ differences in media multitaskers,” University of Sussex, September 25, 2014,
  3. “The Myth Of Multitasking,” NPR, May 10, 2013,
  4. Stephen Willard, “Study: People Check Their Cell Phones Every Six Minutes, 150 Times A Day,” Elite Daily, accessed on August 5, 2017,

Pete Leibman

Pete Leibman

Pete Leibman helps leaders and companies thrive. His work has been featured on Fox News, CBS Radio, and, and his latest book is an Amazon bestseller titled Work Stronger; Habits for More Energy, Less Stress, and Higher Performance at Work. Before writing Work Stronger, Pete worked as an executive recruiter for Heidrick & Struggles, one of the world’s premier executive search firms. In his free time, he teaches one of the largest group exercise classes in the Washington, D.C. area. You can visit to meet Pete and learn how he helps leaders and companies thrive.

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