When the person who knew leaves, what they knew leaves too

Carlos left on Friday. On Monday, nobody knows how to close out the register.

Carlos worked with you for four years. He knew which supplier to call when something ran out. He knew how to get the machine going when it jammed. He could figure out Monday's order without looking at any paper.

Nobody asked him to write it down. There was no need. Carlos was there.

Then one day Carlos found another job. He handed in his notice, said a kind goodbye, and left. And something left with him that wasn't in any contract: the way things got done.

This happens to a lot of small businesses. Not because anyone did something wrong. It happens because when something works, nobody thinks to write it down.

What you see and what you don't

When someone quits, most people think about the costs they can see:

• Posting the job.
• Reading resumes and doing interviews.
• The paperwork for the person leaving and the person starting.

Those costs are real, but they're the small part. The big part is hidden, because it never shows up as a bill:

1. The new hire's learning curve

The new person earns a full salary from day one. But for weeks, they only get done part of what Carlos did. You pay for that gap.

2. Mistakes in the first few weeks

Wrong orders. Product that goes to waste. A customer who gets poor service and doesn't come back. Work that has to be done twice. Nobody does it on purpose. They just don't know yet.

3. The owner's or supervisor's time

Someone has to teach the same things they already taught last year. Those hours come out of their own work. Often, that someone is you.

4. What is lost for good

The tricks, the contacts, the exceptions. The things Carlos knew that nobody knew Carlos knew. You find out the day something breaks.

Put a number on it, even a rough one

The hidden becomes visible when you add it up. Here's a simple example. The numbers are made up, just to show the method. Yours will be different.

Notice something: none of this shows up in your reports as a "turnover cost." It's spread around. A bit in payroll, a bit in waste, a bit in overtime, a bit in customers who didn't come back. That's why almost nobody sees it.

The idea: knowledge that lives only in someone's head isn't yours

If what your business knows how to do lives only in someone's head, it doesn't belong to your business. You're just borrowing it.

This has nothing to do with not trusting your people. Good people quit. They get sick, go on vacation, get promoted. And even if they stay forever, they can only be in one place at a time.

When knowledge lives outside a head, written down, recorded, turned into something another person can learn, something good happens. It stops being a risk and becomes an asset. Something you can teach, improve and multiply.

Does your business depend on one person's head?

Three things you can do this week

1. Make the list. Write down the five tasks that only one person knows how to do today.
2. Ask them to explain it out loud. Sit with that person for fifteen minutes while they do the task. Record it or take notes. It doesn't have to look nice.
3. Save it where the next person will find it. Somewhere a new hire can get to without having to ask anyone.

It doesn't have to be perfect. It just has to be out of one person's head. In the next articles in this series, we'll see how to turn that into something that teaches on its own.