The megamanager era: AI is doubling bosses’ workloads—and the costs are just beginning to show

The average American manager now oversees 12 direct reports, and the data suggest AI is both the cause and the justification for this quiet but seismic shift in how the U.S. workplace is organized. It is one of the starkest structural changes in the modern American office, and it is happening with relatively little public debate about what, exactly, is being traded away in the name of efficiency.

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Call it the megamanager era. Driven by AI-enabled cost-cutting, leaner bureaucracies, and a relentless corporate push to rationalize headcount, companies have spent the past three years gutting their middle-management ranks, leaving whoever survives with a dramatically larger portfolio of people. The data is as official as it gets, coming straight from the Bureau of Labor Statistics. The average number of a manager’s direct reports has nearly doubled since Gallup began tracking the figure in 2013.

If AI can handle scheduling, summarize performance reviews, monitor project timelines, and surface early warning signals about team dysfunction, do you really need as many human coordinators? Meta’s new applied AI engineering division has taken the logic to its most aggressive extreme, deploying a 50-to-1 employee-to-manager ratio—roughly double what was once considered the outer limit of a functional organizational structure. Whether the rest of corporate America follows that example or it becomes a cautionary tale may define the future of work for the next decade.

The pros: speed, savings, and structural clarity

For companies, the immediate math looks appealing. Fewer managers mean lower headcount costs, flatter hierarchies, and (in theory) faster decision-making. When a senior vice president no longer has to relay information through two or three layers of middle management before it reaches the people doing the actual work, information can travel faster, and accountability can land closer to the front lines. A 2024 Gartner analysis predicted that one in five businesses plan to use AI specifically to streamline organizational layers.

AI is also genuinely helping some managers cope with the expanded workload. Tools that automate administrative tasks—flagging performance issues, synthesizing team data, drafting communications, and coordinating schedules across large groups—are reducing the friction that once consumed hours of a manager’s week. Done well, this kind of AI augmentation could make the megamanager model viable: a skilled, well-supported boss leading a dozen people might be more effective than a distracted, paper-buried boss leading six.

The productivity case has deep historical precedent. A sweeping analysis published this week by Morgan Stanley looked at five prior American innovation waves — from the first Industrial Revolution through the internet—and found a consistent pattern: transformative technologies raise output per worker, particularly when paired with deliberate organizational redesign. Chief U.S. economist Michael Gapen’s team found that electrification doubled output per hour in nonfarm business between 1900 and 1929. The internet accelerated labor productivity growth from roughly 1.5% per year to nearly 3.0% per year by 2000. AI should follow the same arc, Gapen suggested—with one critical caveat. Those productivity gains have historically materialized years, sometimes decades, after the initial disruption, not simultaneously along with it. The pain tends to come first.

What’s lost: mentorship, morale, and the career ladder

The human ledger is looking considerably worse than the balance sheet. Another Gartner survey found 75% of HR leaders believe managers are already overwhelmed by their expanding responsibilities, and 69% say managers lack the skills to lead change effectively even before full AI integration takes hold. Gallup data show that global employee engagement has fallen to just 21%, near a 15-year low, with managers themselves—not just the people they supervise—reporting some of the sharpest drops in workplace satisfaction of any cohort. The Wall Street Journal recently argued that work is increasingly “joyless” as many offices take on a funereal atmosphere in the age of the megamanager.

Perhaps the most underappreciated cost of span-of-control inflation is what happens to the people at the earliest stages of their careers. Coaching, mentorship, and hands-on development — the soft infrastructure that has historically built management pipelines and transmitted institutional knowledge from one generation to the next—are the first casualties when a single boss is stretched across 12 people rather than 6. A manager with a dozen direct reports simply cannot spend the same number of hours per person nurturing potential, giving real-time feedback, or advocating for junior employees in rooms they’re not in. That gap accumulates, posing a threat to talent development.

Flattened hierarchies also disrupt traditional career progression in ways that are only beginning