Call blocks: why focused calling sessions beat calling in between

Cold calling works better in fixed call blocks than in the gaps between other work. Put one or two hours in your calendar, prepare the list before you start, turn off notifications and keep admin for after the block. The reason is simple: every switch between tasks costs time and attention, and calling between emails and meetings means many switches per hour. A block removes most of them.

What a call block is

A call block is a protected slot in your calendar in which you only make calls. Not "I will call when I have a minute", but "Tuesday and Thursday, 9:30 to 11:00, I call". Some teams call it a power hour. The name does not matter. Three things do:

• A fixed time. It is in the calendar, like a meeting with a customer.
• A ready list. You know who you will call before the block starts.
• One task. During the block you call, log the outcome and move to the next lead. Everything else waits.

What research on task switching says

Switching between tasks has a cost, even if it feels efficient. In 2001 the American Psychological Association reported on experiments by Joshua Rubinstein, David Meyer and Jeffrey Evans. Young adults switched between tasks such as solving math problems and classifying shapes. They lost time on every switch. The loss grew when the tasks were more complex, and when people switched to a less familiar task.

The researchers described two steps in every switch: you change your goal, and you load the rules of the new task. Each step takes only fractions of a second. But they add up when you switch back and forth all day.

A cold call is a complex task. You need the lead's context, your opening, your questions and your answers to objections. An email, a CRM update or a quick look at LinkedIn each asks for a different set of rules. Calling in between those tasks means paying that switching cost over and over.

How fragmented normal office work is

In a field study, Victor González and Gloria Mark observed 14 information workers (analysts, developers and managers) for several days each. On average, people spent about three minutes on a task before switching. Even their larger units of work, which the authors called working spheres, lasted only about 12 minutes before they moved to another one. This was a small US sample from 2004, before smartphones were everywhere, so treat it as an illustration of how scattered a normal workday can be, not as a benchmark.

Interruptions cost energy, not only time

You might expect interrupted people to work more slowly. The picture is more interesting. In a 2008 lab study, Gloria Mark, Daniela Gudith and Ulrich Klocke asked 48 participants, mostly German students, to answer a set of work emails. In some rounds a "supervisor" interrupted them by phone or chat about every two minutes.

The interrupted rounds were finished faster, with no difference in the number of errors. But the emails were shorter, and participants reported more stress, more frustration, more time pressure and more effort. The authors concluded that people make up for interruptions by working faster, and that this has a price.

For a caller this is a familiar feeling. You can push through a morning full of pings and still make your calls. You will just be more tired at the end of it, and tired callers sound rushed. Since attention is fragile anyway (Gloria Mark writes on her book page that attention on a screen now averages about 47 seconds), it is worth protecting the hours where you need it most.

How to set up a call block

This is a practical routine. The research above explains why it helps; the exact times are suggestions, not research results.

1. Put it in the calendar. Two to four blocks per week, at times your prospects tend to pick up. Our article on the best time to cold call helps you choose, but your own data is the real guide.
2. Prepare the list the day before. Pick the leads, check the numbers and read any notes. Research during the block is a switch too.
3. Open only what you need. The lead, the script and your answers to objections. Close email and chat. Put your phone notifications on silent, except for the calls you make.
4. Warm up with an easy call. Start with a call back you have planned, or a lead you have spoken to before.
5. Log in seconds, not minutes. Right after each call, record the outcome and one line of notes. Then dial the next lead.
6. Take a short break between blocks. Stand up, get water, reset. Then start the next block.
7. Do the admin after the block. Longer follow-up emails, LinkedIn messages and list clean-up go in a fixed slot right after.

How long should a block be?

There is no study that gives the ideal length of a calling session. Start with what you can sustain. A practical way to size it:

1. Time one focused hour and count your call attempts.
2. Take your weekly call target. If you do not have one yet, our guide on how many calls it takes to win a customer shows how to work it out.
3. Divide the target by your attempts per hour. That is the number of calling hours you need per week.

Example, with made-up numbers: you need 125 attempts per week and you manage about 25 per focused hour. That is five hours of calling per week, or five blocks of one hour, or three blocks of 90 minutes and a short top-up.

What to do when you do get interrupted

Some interruptions cannot wait. A customer calls back, a colleague needs an answer. The trick is to make it easy to come back.

Sophie Leroy has studied what she calls attention residue: part of your mind stays on the task you left. With Theresa Glomb, she ran four studies on it and tested a simple fix, described by the University of Washington. Before switching, participants wrote a quick ready-to-resume plan: where they were, what was still open, and what to do next. That plan reduced the residue during the interrupting task, and those participants made better decisions on it. Note the limit: the studies did not test whether people did better once they went back to the first task.

For a caller this takes ten seconds. Write "next: lead 14, Jansen BV, call back after 2 pm, ask about the tender" and then deal with the interruption. When you come back, you do not need to work out where you were.

Call blocks for teams

Blocks work even better when a team calls at the same time. It is easier to protect a slot when everyone does it, and nobody expects a quick answer to an internal message during the block. A few rules that help:

• Same block, same calendar. Put team blocks in a shared calendar, so internal meetings are planned around them.
• No meetings in the block. Not even short ones.
• Short check-in after. Five minutes: how many conversations, which objection came up most, what worked. Facts, not feelings.
• Protect calling time from admin. If callers spend their blocks on data entry, the block is not a block. Our article on sales time versus admin goes deeper.

Common mistakes with call blocks

• Building the list during the block. Then half of the block is research.
• Keeping email open "just in case". Every glance is a switch.
• Long notes after every call. One outcome and one line are enough during the block. The rest can wait.
• Blocks that are too long. Three hours without a break makes the last hour weak. Two shorter blocks are better.
• Cancelling the block first when the day gets busy. Calling is the work that fills next month's calendar. Treat the block as an appointment.
• Taking a bad block personally. Some blocks bring no conversations at all. That is part of the math. See our article on handling rejection in cold calling.

Keep the block light

A block only works if the steps between calls are short. The ideal is: see the lead, call, record the outcome, see the next lead. In Ringlane that loop sits on one screen: the lead on the left, the script in the middle and objection answers on the right. You record the outcome with one key, for example N for not reached or T for call back, and the next step is planned for you. Call backs that are due show up first in the Today view, so the list for your next block is already there.

Whatever tool you use, the principle is the same. Decide when you call, prepare before you start, and let nothing else into the block. The calls you make in a focused hour are better calls, and you finish the day with more energy left.

Frequently asked questions

Sources

1. American Psychological Association press release (2001), via Newswise: Is multitasking more efficient?
2. Mark, Gudith and Klocke (2008): The cost of interrupted work: more speed and stress, CHI 2008
3. González and Mark (2004): Constant, constant, multi-tasking craziness, CHI 2004
4. University of Washington News (2018): Task interrupted? A plan for returning helps you move on
5. Gloria Mark: Attention Span (book page)