The Span of Control Ceiling

Span of control has an operational ceiling, and most reorgs never check where it sits.

5 minute read

A manager at a cluttered desk reaching toward a stack of sticky notes while a monitor behind them shows a crowded grid of chat and notification windows.

When a reorg removes a layer of managers, the survivors split up the reports among themselves. As the org chart gets flatter in the name of simplification, rarely does anyone check if there’s still room for actual managing before the reassignment goes out.

The concept of “span of control” has an operational ceiling where a manager’s job changes from developing people to routing information between them (depending on what’s being supervised).

Hidden In The Numbers

The US Bureau of Labor Statistics tracks employment by major occupational group every year. The 2025 data on management occupations divide out to roughly one manager for every 11 employees in the US economy.

Gallup (January 2026), surveying managers directly, arrives at a similar picture. The average manager’s span grew from 10.9 direct reports in 2024 to 12.1 in 2025. That 2025 average is nearly 50% above what Gallup measured when it first started tracking this in 2013. However, that average is doing a lot of work. The median manager has five to six direct reports while 66% oversee fewer than 10. Gallup finds 13% of managers now oversee 25 or more direct reports, a minority large enough to pull the mean well above where most managers actually sit.

 
At twenty-five direct reports, the job description hasn’t changed, but the work has. Managing requires enough contact with each person’s work to coach them and catch real problems early. Past a certain point, that contact gets replaced by status updates moving in one direction.

Neither number tells the full story alone. BLS gives an economy-wide ratio for a single year, but not a guide on the year-over-year movement. Gallup’s series is the one that moves, tracked since 2013, and it shows the average climbing as coordination work concentrates onto a shrinking set of managers. While the two land in similar territory by different routes, one counting headcount across the whole economy, the other asking managers directly, neither one says whether the manager still has room to actually manage.

The Ceiling and the Work

In some sectors, like aviation, supervisory ratios are treated as a safety constraint. A supervisor overseeing standardized, low-variance tasks could hold a wide span without missing anything, while four or five reports on complex, high-judgment work already exceeded what one person could track. As with most things, not all tasks or managing responsibilities are created equal, and where the ceiling sits depends on the work’s complexity.

Most flattening decisions skip that check. A typical reorg sets a target ratio, usually borrowed from a benchmark or a peer company, and applies it uniformly across a division. That ratio applied to a a team running a stable, repeatable process alongside a team doing judgment-heavy work creates real variance. The first team can probably absorb it. The second team can’t and nobody finds out until turnover or quality problems show up months later.

 
Before assigning a target span of control, would the people on this specific team need real coaching and judgment calls from their manager, or mostly need someone to remove blockers and pass information along? Use that answer to guide the judgment on span and scale.

Of course, sizing the span to the work costs more to run than a single ratio applied company-wide, because it means giving up the tidy math of one ratio for every manager. Managers doing judgment-heavy work end up with smaller teams and in exchange they get room to actually manage the people on them.

The Manager Absorbs the Difference

The Ladder Shrank covered what thinning management layers does to the people waiting to ascend the ranks. This is the other half of the same reorg where the load is carried by the managers who stay. In August, I wrote about the AI version of this pitch, where agents are supposed to make a wider span tolerable, though we’re not quite there yet. A manager who absorbs three or four extra reports doesn’t get three or four extra hours in the day, so the first thing to slip is depth, the actual coaching and judgment calls that made the role worth having in the first place.

Deborah Lovich, a managing director at Boston Consulting Group, told CNBC in December 2025 that a competent middle manager is often what gives a strained team the motivation and reassurance it needs to stay productive. That’s a hard job to do well even with a reasonable number of reports. Past the ceiling, even a manager who keeps trying can’t get enough contact with any one person to catch the problem before it becomes a resignation letter.

 
A rough tell: if a manager can describe what each direct report is currently stuck on, the ceiling hasn’t been hit yet. If all they can offer is what each report last put in a status update, it has. It’s not about just knowing what the team is doing, it’s that you’re engaged enough to block and tackle challenges with them.

Flattening can be the right structural call and plenty of reorgs need to happen for reasons that have nothing to do with span of control. The question they skip? Are the people absorbing the extra reports still doing the job of managing them, or just relaying what those reports say to whoever’s above them now?

Span of control is a ceiling that moves with the complexity of the work being supervised, and most flattening decisions get made without ever checking in with the team in question.

Before the next round of flattening, would the manager absorbing those extra reports still have room to manage them, or just room to pass their messages along?