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The Question No One Asks |
You track revenue per employee. Cost per acquisition. Gross margin. |
But do you know what one bad manager costs your business? |
Most leaders don't. |
They see underperformance as a "people problem" or a "culture issue." |
But bad management is killing your bottom line. |
And the numbers are brutal. |
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The Manager Performance Gap |
I didn't want this to be a hand-wavy exercise. So I started with studies from credible sources and eliminated dozens that could have been added to these three. |
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Here's what happens when you compare bottom-quartile managers to top-quartile managers across three key drivers: |
Driver | Bottom 25% | Middle 50% | Top 25% | The Gap |
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Annual Turnover Rate | 30% | 15% | 8% | 22 percentage points | Team Productivity | 82% of potential | 95% of potential | 110% of potential | 28 percentage points | Profitability Impact | Baseline | +24% | +48% | 48 percentage points |
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Sources: Gallup State of the American Manager (27M+ employees), SHRM, Harvard Business Review |
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What This Means in Real Money |
Percentages are hard to attach to. They don't make the pain of this difference real enough. So, let's make this concrete with the number of a typical SMB: |
$5M revenue company generating $1M in EBITDA. |
And let's take two managers—Manager A (Bottom 25%) and Manager B (Top 25%)—and give each one a 10-person team with $700K in annual team payroll. |
Same title. Same budget. Same team size.
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Here's what the performance gap costs: |
Driver 1: Turnover |
Manager A: 30% turnover = 3 people leave annually Manager B: 8% turnover = less than 1 person leaves annually Replacement cost: $70K average salary × 100% replacement cost = $70K per departure The gap: 2.2 extra departures × $70K = $154K annual cost
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Driver 2: Productivity |
Manager A: Team operates at 82% of potential Manager B: Team operates at 110% of potential Team payroll: $700K The gap: 28 percentage points × $700K = $196K in lost output
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Driver 3: Profitability |
Manager A: Baseline profitability on their portion of revenue Manager B: 48% higher profitability Revenue responsibility: Each manager influences ~$500K in revenue (10% of company) Company EBITDA margin: 20% ($1M profit on $5M revenue) Baseline profit from their area: $500K × 20% = $100K The gap: 48% higher profitability = $48K additional profit
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The Total Annual Impact |
Cost Category | Annual Difference |
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Excess turnover | $154K | Lost productivity | $196K | Profitability gap | $48K | TOTAL ANNUAL COST | $398K |
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Manager A costs the company $398K more annually than Manager B. |
For a company with $1M in EBITDA, one bad manager is destroying 40% of your profit. |
And this is conservative. We not even considering: |
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The 40% Rule of Thumb |
Want to estimate what your worst manager is costing your company? |
Here are two simple ways: |
If You Know The Revenue/Profit They Produce
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Take the number being produced by your worst manager's team, and multiple it by 1.4. |
That difference is the money you're leaving on the table. |
All of a sudden training or coaching look like bargains. |
If The Team's Direct Contribution is Fuzzy
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Add up the total compensation for the whole team and multiply that by 1.4. |
The difference is again the value you're missing out on. |
Why does this work? |
Because if you have a team isn't at least paying for themselves (i.e. at least delivering enough value to cover their own costs) you won't be in business for long. |
Again, I'm being conversative. This is likely understating just how much money you're losing from not addressing this issue. |
Here's one more to drive it home: |
Divide that number by 200 (those are work days in a year) and write it on a post-it. |
That way you can be reminded about how much money you're lighting on fire every day you tolerate a bad manager. |
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Why This Matters |
Most organizations treat management development as an HR checkbox. |
"Promote out best people. Hope they figure it out." |
But the ROI on management development is 10:1 or greater. |
The math: |
Invest $10K-$20K developing a manager Prevent $200K-$400K in losses Unlock additional value through higher performance
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There may be no higher-ROI investment in your business. |
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Your Next Move |
This week, answer three questions: |
Who are your bottom-quartile managers? (You know who they are) What value should their team create? (Estimate the gap at 40%) What's your plan? (Develop them, move them, or exit them)
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Because bad managers aren't just underperformers. |
They cost you real money. |
And every day you wait costs you more than you think. |
Lead on,
Dave |
PS - We need your input. We're building something new to help more people become AI-Accelerated Leaders. But we can only build it on LLM. |
Which should we choose? |
Which LLM do you rely on most for work? |
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| | | | Ways To Work With Us | MGMT Accelerator: A live cohort-based leadership development program. MGMT Fundamentals: A two-week training program for new managers. Custom Programs: Workshops built and delivered for your company. 1:1 Executive Coaching: C-suite leaders looking to scale. Keynote speaking: Leadership lessons for your event or offsite.\
| Learn about them all at: davekline.com |
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