Span of control
Span of control is the number of people who report directly to one manager. It is the first thing an experienced reader checks on an org chart, because it says more about how a company actually runs than any title does: a manager of two is a title, a manager of eleven is a queue, and a company of a hundred with five layers has chosen its spans without noticing.
Three spans, one director
What is normal
Rules of thumb, not laws. The work sets the span: how much each person needs from the manager, and how much of the work the manager still does.
| Kind of work | Typical span | Why |
|---|---|---|
| Routine, similar work: a call center, a warehouse shift, a sales floor | 10 to 15, sometimes more | The manager schedules and coaches; nobody needs directing task by task. |
| Skilled work with variety: a finance team, an engineering team, a clinic | 5 to 8 | Each person needs real attention, and the manager still does some of the work. |
| Leaders whose reports run functions: a chief executive, a divisional head | 5 to 10 | Each report is a whole department; twelve is common and usually one too many. |
| Under 3 | A title, a transition, or a working manager | Any of the three can be right. Say which, on the chart or beside it. |
Spans and layers
For a fixed headcount, the average span sets the number of layers, and each layer costs something: a handoff for every piece of information going up or down, a promotion step people expect to climb, and a manager's salary. Widening spans is how companies take layers out; narrowing them is how layers appear without anyone deciding to add one.
The check is layers against headcount. A company under a hundred people with four levels below the chief executive should be able to say why; most cannot. The table gives the arithmetic for a hundred people.
| Average span | Layers below the top, for a hundred people |
|---|---|
| 4 | Four |
| 6 | Three |
| 8 | Three |
| 12 | Two |
How to check every span in a minute
Draw it from the list
Spans are invisible in a spreadsheet and obvious in a chart. Import the list and look before counting anything.
Look for the columns
A manager with a wide team stacks into a column on the sheet. Every column is a span to look at: fine for routine work, a queue for anything that needs directing.
Look for the pairs and the singles
A manager with one or two reports is a title, a transition or someone who also does the work. If nobody can say which, that is the finding.
Count the rows
Layers against headcount. Under a hundred people, three below the top is plenty; the table above says what each average span costs.
Leave the assistants out
A staff card beside a manager is not a report in this sense, and the export does not count one. Neither should you.
Let the export count
The PowerPoint export adds a second slide that lists every manager with their direct reports and total headcount, and the average span across the chart. It is a paid format; the chart itself shows the same thing for free.
What to do about a bad one
- A span of one or two: fold the role into its manager's, give the manager a real team, or say plainly that it is a working lead.
- A span over twelve of varied work: add a working team lead who keeps the same manager, not a new layer with a new title.
- A chief executive with fourteen: group functions under a chief operating officer or a general manager, and draw it as a proposal first, where nobody else can see it.
- Never fix one bad span by adding a layer everywhere. The cost of a layer is paid by every person under it.
Questions people ask
- What is span of control?
- The number of people who report directly to one manager. A manager with six direct reports has a span of six. It is read straight off an org chart: count the cards under each manager, leaving out any staff cards beside them.
- What is a good span of control?
- It depends on the work. Ten to fifteen for routine, similar work such as a call center or a warehouse shift; five to eight for skilled work with variety; five to ten for leaders whose reports each run a function. Under three is a title rather than a team unless the manager also does the work. These are rules of thumb, not laws; the useful question is whether each manager can actually give each report the attention the work needs.
- What is the difference between a narrow and a wide span of control?
- A narrow span is a manager with few reports, which means more managers and more layers for the same headcount: closer supervision, slower information, more salary spent on managing. A wide span is a manager with many reports: fewer layers and faster information, at the cost of attention per person. Neither is good in itself; the work decides.
- How does span of control affect the number of layers?
- For a given headcount, the average span sets the layers. A hundred people at an average span of four need four layers below the top; at six or eight, three; at twelve, two. Every layer adds a handoff for information, a promotion step people expect and a manager's salary, which is why widening spans is usually how companies take layers out.
- Do assistants count toward span of control?
- No. An assistant or a chief of staff beside a manager supports them rather than reporting to them in the sense the span measures, and is drawn as a staff card beside the manager rather than below. The span-of-control slide in the PowerPoint export leaves staff cards out for the same reason.
- How do you calculate span of control from an org chart?
- For one manager, count the cards directly under them. For the organization, divide the number of people who have a manager by the number of people who manage someone: that is the average span. A chart drawn from a list shows every span at once, and the PowerPoint export lists them with the average.
- What is the ideal span of control for a CEO?
- Five to ten direct reports, with eight common. Beyond that the chief executive's calendar becomes the company's bottleneck, and the usual answer is a chief operating officer or grouping functions under general managers. Under five in a company of any size usually means a layer that could go.
- Is a wide span of control good or bad?
- Good for routine work with experienced people and clear standards, where the manager coaches rather than directs. Bad for work that needs decisions from the manager every day, where a wide span turns into a queue. The chart shows the width; the work decides whether it is a problem.
Read yours off the chart
Import the list and every span is visible at once: the columns, the pairs, the singles. The PowerPoint export adds a slide that counts them for you. Building is free at any size.