What does a bad manager cost a company?

What is the visible cost of a bad manager?

The visible cost is people leaving. Gallup puts it plainly: “The cost of replacing an individual employee can range from one-half to two times the employee’s annual salary,” and adds that this is “a conservative estimate” (Gallup).

That range covers the obvious items: advertising, recruiter fees, interview hours, onboarding and the months before a new person is fully up to speed.

Managers sit close to that decision to leave. In a Gallup study of 7,272 US adults, 1 in 2 had left a job at some point to get away from their manager (Gallup).

And a lot of those exits look avoidable. Gallup found that 52% of voluntarily exiting employees say their manager or organisation could have done something to prevent them leaving. Over half (51%) say that in the 3 months before they left, no manager or leader spoke with them about their job satisfaction or future (Gallup).

That second figure is the hopeful one. A conversation is cheap.

What costs don’t show up on the spreadsheet?

The quieter costs are often bigger than the turnover bill, because they last for as long as the manager stays. There are 4 worth naming.

People who stay but switch off. Gallup’s research shows that “managers account for at least 70% of variance in employee engagement scores” (Gallup). Across the world, Gallup estimates low engagement cost the global economy about $10 trillion in lost productivity last year, or 9% of GDP (Gallup). You don’t see that on an invoice. You see it as work that takes longer, ideas nobody raises and problems spotted late.

The good people leave first. The people with the most options are the ones who can act on them soonest. So the turnover a struggling team loses is rarely average. It’s often the person everyone else relied on, which raises the load on those who remain.

More sick days. Stress shows up as absence. In CIPD’s UK research, the share of organisations naming management style as a cause of stress-related absence rose from 32% to 43% in a year, and heavy workloads were the top cause at 62% (CIPD). Gallup’s meta-analysis found a median 78% difference in absenteeism between top-quartile and bottom-quartile teams for engagement (Gallup).

Your time. Every escalation, skip-level complaint and rescued project lands on someone senior. That’s you. It rarely gets counted, but it’s time you’re not spending on the work only you can do.

How do I estimate the cost for my own organisation?

Use 3 lines of arithmetic: turnover, lost output and extra absence. Work in whatever currency you pay salaries in. The method doesn’t care.

Here’s the formula:

• Turnover: avoidable leavers × average salary × 0.5 (low) or 2 (high)
• Lost output: people who stayed but switched off × average salary × the share of effort you think is missing
• Extra absence: extra sick days across the team × daily salary cost

Salary is a cautious stand-in for the value of someone’s work. Most people produce more than they cost, so the true figure is probably higher.

A worked example (an illustration, not a real team)

Say a team has 8 people. The average salary is 60,000 a year, in your currency. Over the last 12 months:

• 2 people left who, by their own account, might have stayed
• 4 of the remaining people seem to be giving about 10% less than they could
• the team took about 3 extra sick days each compared with similar teams

Turnover. 2 × 60,000 = 120,000 in salaries. At Gallup’s low end: 120,000 × 0.5 = 60,000. At the high end: 120,000 × 2 = 240,000.

Lost output. 4 × 60,000 = 240,000 in salaries. 10% of that is 24,000.

Extra absence. 8 people × 3 days = 24 days. With about 230 working days a year, a day costs 60,000 ÷ 230 ≈ 261. So 24 × 261 = 6,264.

Total. Low: 60,000 + 24,000 + 6,264 = 90,264. High: 240,000 + 24,000 + 6,264 = 270,264.

So one team of 8 could be costing somewhere between 90,000 and 270,000 a year. That’s 1.5 to 4.5 times one person’s salary, from one management gap.

Your numbers will differ. The value is in writing down each assumption so others can challenge it. The 10% effort figure and the 3 sick days are guesses in this example: replace them with your own data, and keep the low and high figures side by side.

For a sense of scale, Gallup’s own example puts a 100-person organisation paying an average of $50,000 at roughly $660,000 to $2.6 million a year in turnover and replacement costs (Gallup). Coach42’s free Cost of a Bad Boss calculator runs this arithmetic for you, in your own currency.

Is it the manager’s fault?

Mostly, no. Many managers were promoted because they were excellent at the work, then handed a team with little preparation for what comes next.

The training gap is real. CIPD found that only 50% of managers had been trained to support staff to manage stress (CIPD). If half your managers were never shown how, the cost above is partly a system cost.

That changes the question. Not “who is the bad manager?”, but “what does this manager need that they haven’t had?” Usually it’s some mix of:

• clear expectations about the people side of the job, not just the delivery side
• feedback from their own team, gathered safely
• time to coach, rather than a calendar full of their own deliverables
• a senior person who checks in on how they lead, not only what they ship

If you want a starting point for that feedback, how to find out what your team really thinks of you covers ways to ask without making it awkward.

What can I do about it on Monday?

Start with conversations, because Gallup’s 51% figure says they’re often missing. Here are 4 small experiments.

Ask each manager for a “stay conversation” list. Ask them to name the 2 people on their team they’d least like to lose, and when they last talked about that person’s future. If the answer is “not recently”, that’s the first meeting to book.

Run your own estimate. Take one team you’re worried about and do the arithmetic above. Share the low figure, not the high one. It’s harder to argue with.

Look at one-on-ones. Ask your managers how their one-on-ones go and who does most of the talking. Try the question below on yourself first.

Check your own habits. The managers below you learn from what you do, not what you say. The free 42 Test gives you a private picture of how you lead across 3 axes, so you can model the habits you want to see.

How do I make the case to the rest of the leadership team?

Lead with the number, then the fix. A leadership team will spend more time on 90,000 a year than on “morale is low in that team”.

A simple structure works:

• The cost: your low estimate, with every assumption written down
• The cause: what’s missing for the manager, such as training, time or feedback
• The fix: one specific change, a date to check in, and what you’ll measure

Then compare the fix with the cost. Training, coaching or a lighter workload for one manager is almost always cheaper than replacing 2 people. The same logic applies to other hidden costs, such as the hours lost to recurring meetings.

For more on leading at this level, see the guides for senior leaders. The point isn’t to find someone to blame. It’s to give every team a manager who has what they need to do the job well.