Key Person Dependency: When One Person Knows Too Much
TL;DR
If one person disappeared from your business tomorrow, what would stop?
Key person dependency happens when important knowledge, processes or relationships rely too heavily on one individual. For small businesses, reducing that risk isn’t about replacing valuable people. It’s about capturing what they know so the business can keep moving when they’re unavailable.
Every business has that person
You probably know exactly who they are.
The person everyone goes to when they don’t know what to do. They know which spreadsheet contains the right information, how to fix the system when something goes wrong, which customer needs something done differently and who to contact when there’s a problem.
Having someone with that level of knowledge is incredibly valuable.
But there’s a risk hiding underneath it.
What happens when they’re not there?
They don’t have to leave the company. They could be sick, take two weeks’ annual leave, move into another role or simply become so busy that everyone else is waiting for them.
That’s key person dependency.
The problem isn’t that one person knows too much. The problem is that the business doesn’t know what they know.
The easiest way to spot it
Try this with your own business.
Pick one important person and imagine they’re unexpectedly unavailable for the next two weeks. No phone calls. No quick messages asking where something is.
Could somebody else do their work?
Would they know where to find the right information?
Could they deal with an unusual customer request?
Would they understand why certain decisions are made?
If you’re answering “I’m not sure”, you’ve probably found a dependency.
Key person dependency isn’t just about someone leaving the business. It can exist wherever an important process, relationship, system or piece of knowledge depends on one person being available.
Reducing that dependency can include documenting critical processes, sharing knowledge, cross-training others and making sure essential information and access aren’t held by just one person.
Don’t try to document everything
This is where businesses can make things far more complicated than they need to be.
Start with the processes that would actually cause a problem if they stopped.
Customer processes. Payments. Suppliers. Reporting. Important systems. Regular operational tasks.
Then ask:
Who knows how this works?
If the answer keeps coming back to one person, start there.
And don’t just document the steps. Capture the knowledge behind them.
Why is something done this way? What usually goes wrong? When would you do something differently? What does an experienced employee know that a new starter wouldn’t?
That knowledge is often far more valuable than a basic step-by-step procedure.
Make the knowledge usable
The answer isn’t necessarily a 40-page procedure manual.
Depending on the process, it might be a checklist, process map, short training video, screen recording, decision tree or simple written guide.
Then give it to someone else and see whether they can actually follow it.
If they can’t, you’ve discovered what’s still living inside the original person’s head.
This also gives you something far more valuable than documentation. You start creating repeatable training that can be used when somebody changes role or a new employee joins the business.
Where technology fits
Only after you understand the process would I start asking whether Microsoft 365, automation or AI could improve it.
A repetitive handoff might be automated. Business knowledge might be easier to access through SharePoint. A repeated process could become a short training resource.
But technology shouldn’t be used to automate a process nobody properly understands.
Understand it first. Simplify it second. Then decide what technology can genuinely improve.
One question to ask tomorrow
You don’t need a major project to start identifying key person dependency.
Ask:
If one person couldn’t come into work tomorrow, what would we struggle to do without them?
Whatever immediately comes to mind is probably where you should start.
Your people should absolutely hold valuable expertise.
Your business just shouldn’t lose access to critical knowledge every time one of them walks out the door.
Sources
Need help getting that knowledge out of people’s heads?
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