The cost of manual work is hidden. Here is how to calculate it.
Nobody sends an invoice for manual work, so it feels free. The cost of manual work is real, and you can calculate it in an afternoon.
Short answer: The cost of manual work is the combined value of time, errors and delays caused by repetitive tasks that people do by hand. To calculate it, multiply the time per run by runs per week, people involved, working weeks and full hourly cost, then add the cost of errors. The result is an estimate that shows where to start.
Manual work does not show up in a budget line, so it feels free. The cost of manual work is real, though, and you can calculate it in an afternoon with a pen and a calendar. The result is rarely zero.
What the cost of manual work includes
The cost of manual work is the total value of time, errors and delays caused by tasks that people do by hand, although they follow a fixed pattern. It has three parts.
Time
Hours spent copying, sorting, checking and chasing. Everyone sees this part, and most people underestimate it, because the task is split into many small pieces across the day.
Errors
Every manual step carries a risk of a typo, a missed field or a forgotten follow-up. Each error costs time to find and fix, and sometimes a customer's patience.
Delay
Work that waits until someone finds time. A lead that is answered after two days instead of two hours. An invoice that goes out a week late. This is harder to count, but you can often name the example that hurt most.
How to calculate the cost of manual work in four steps
Pick one task. Choose something repetitive, such as copying order data or sending status updates.
Measure the time. Ask the people who do it for an honest average per run and how often it happens per week. Track it for one week if you can.
Set an hourly cost. Use the full employment cost per hour, not only the salary. Your finance team or a rough estimate will do.
Add errors. Count how often something goes wrong and how long it takes to fix.
Then multiply: time per run, times runs per week, times people, times working weeks per year, times hourly cost. Add the cost of errors on top.
An example with made-up numbers
This is a made-up example to show the method, not a result from a client. Five people each spend 20 minutes per working day copying order data from one system into another. That is 100 minutes per person per week, or about 8.3 hours for the team. Over 46 working weeks, that is about 383 hours. At a full cost of 45 euros per hour, the copying alone costs 17,250 euros per year.
Now add errors. Say three errors per week each need 40 minutes to find and fix. That is 2 hours per week, 92 hours per year and 4,140 euros. Together, the task costs roughly 21,000 euros per year. Your numbers will differ. The method will not.
What the number does and does not tell you
The number is an estimate, and that is fine. It helps you compare tasks and decide where to start. It does not mean you will save the full amount. Automation has its own costs: building, testing and maintaining. A rough rule is to compare the yearly cost of the task with what it takes to automate it and run it for a year.
It also does not tell you whether the process is ready. A costly task with unclear steps or messy data needs clean-up first. We described the warning signs in When not to automate. 4 warning signs..
The cost that is not on the sheet
Some costs resist a formula: the colleague who dreads Monday because of that one report, the knowledge that sits in one person's head, the customer who waits. Do not force a number onto these. Write them next to the calculation. They often make the decision easier than the total does.
Conclusion
Manual work is not free. It is only unbilled. Pick one task this week and run the four steps. Which task would you measure first?
Structure first, intelligence second.
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FAQ
How do you calculate the cost of manual work?
Multiply the time per run by runs per week, people involved, working weeks per year and hourly employment cost. Then add the cost of errors and rework.
What hourly cost should I use?
Use the full employment cost per hour, including taxes, social contributions and overhead, not only the salary. A rough estimate is enough to compare tasks.
Does the cost of manual work equal the savings from automation?
No. It shows what the task costs today. Automation has its own costs for building and maintaining the workflow, so compare both over one year.
This Blogpost was created with the support of AI
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