Employees make mistakes during order picking primarily due to a combination of unclear workstation layout, time pressure, and physical fatigue. These three factors reinforce each other: a poorly organized workstation increases mental strain, time pressure forces workers to make hasty decisions, and fatigue impairs concentration. In this article, we answer the most frequently asked questions about picking errors in the warehouse and how to address them.
What are the most common causes of picking errors?
The most common causes of errors in order picking are unclear product locations, labels or lists that are difficult to read, fatigue, time pressure, and a chaotic workstation layout. Each of these factors increases the likelihood of errors, and in practice, they rarely occur in isolation.
Warehouse errors are rarely caused by inattention alone. Behind every picking error, there is almost always a structural problem in the work environment or the work process. The most common causes are:
- Unclear or inconsistent location labels that cause employees to be unsure which product to pick
- A hard-to-read or outdated pick list that does not match the physical layout of the warehouse
- Too many SKU variations in a limited space, resulting in similar products being displayed side by side
- Insufficient lighting at picking stations, which leads to errors when scanning barcodes or labels
- Lack of feedback during the picking process, resulting in errors not being detected until shipment or upon arrival at the customer's location
Anyone who wants to systematically improve the accuracy of order picking must first understand which of these causes play the biggest role in their specific situation. An analysis of return reasons and error messages by workstation provides a good starting point for this.
How does workstation design affect the error rate in order picking?
A poorly designed workstation directly increases the likelihood of picking errors because employees have to expend more mental energy searching for, reaching, and identifying products. Every additional action or movement required to retrieve an item increases the likelihood of a mistake.
The layout of a workstation largely determines how easy or difficult it is to make the right decision. When products are placed at an illogical height, employees have to bend over or reach up to access items, or when the picking zone is laid out in a way that makes it difficult to see everything, the cognitive load increases. That extra mental effort comes at the expense of attention to selecting the correct item and the correct quantity.
Specific layout errors that contribute to warehouse errors include:
- Products outside the optimal reach zone (between knee and shoulder height)
- Picking locations that do not match the order on the pick list
- Insufficient space to place products while inspecting them
- Poor traffic flow, causing employees to cross paths or get in each other's way
A well-designed workstation not only reduces physical strain but also minimizes the number of decision points per pick. Fewer decision points mean fewer opportunities for error. For specific applications such as box handling or pallet handling, there are tailored layout solutions that simplify the workstation.
Less effort, more performance
Lift more efficiently with ergonomic lifting solutions. Our specialists are happy to work with you to find the right solution.
Why do employees make more mistakes when they're under time pressure?
Time pressure increases the number of picking errors because, under pressure, employees act faster than they can verify their work. The verification step, which is normally built into a steady work rhythm, is skipped or shortened when time is limited.
When an employee knows they must process a certain number of orders per hour, their priority unconsciously shifts from accuracy to speed. This is a normal human mechanism: under pressure, the brain chooses the fastest route, not the most careful one. In an order-processing environment with many similar products or small differences in quantities, this quickly leads to errors.
Time pressure also exacerbates other risk factors. An employee who is already tired and is also under pressure makes significantly more mistakes than someone who experiences only one of these factors. The combination is more dangerous than either problem on its own. This makes it all the more important to take realistic accuracy standards for order picking into account when planning for peak periods.
What role does fatigue play in errors in the warehouse?
Fatigue is one of the most underestimated causes of picking errors in the warehouse. Physical fatigue from heavy lifting or standing for long periods of time impairs concentration, while mental fatigue from repetitive tasks reduces alertness. Both types of fatigue lead to more errors, more returns, and more safety risks.
In warehouses where employees regularly move heavy goods by hand, physical fatigue often sets in before noon. When people are tired, they tend to check items less carefully, act more quickly without verifying, and overlook details. This directly translates into a higher error rate during order picking.
Mental fatigue is less visible but just as real. Repetitive picking tasks that involve performing the same actions over and over again lead to a kind of autopilot mode in which attention drifts away. Employees who follow the same route and make the same movements for hours on end experience a significant decline in accuracy by the end of their shift.
Measures that reduce physical strain, such as ergonomic aids, therefore have a twofold effect: they reduce physical wear and tear and help employees stay alert and focused for longer.
How can you reduce picking errors without making major investments?
Reducing picking errors without major investments starts with three simple steps: optimizing workstation layout, implementing a clear and consistent labeling system, and incorporating checkpoints into the picking process. These adjustments are inexpensive but have an immediate impact on accuracy.
Practical improvements that yield quick results:
- Revise the warehouse layout so that the most frequently picked items are stored at an ergonomic height and the walking route logically follows the pick list
- Improve labeling by using larger, clearer labels and color-coding by zone or product category
- Double-check complex orders or items that are very similar to one another
- Provide employees with feedback on their error rate so they can make adjustments on their own
- Develop a job rotation policy to reduce mental fatigue during repetitive tasks
Many warehouse errors are not the result of inadequate technology, but of minor organizational shortcomings that can be addressed with relatively little effort. Taking a fresh look at the workstation—preferably together with the employees themselves—often yields the most valuable insights.
When is ergonomic material-handling equipment the solution to picking errors?
Ergonomic handling equipment is the right solution for picking errors when fatigue caused by physical strain is a systemic cause of errors, or when workstation design forces employees into unnatural postures that reduce their concentration. In such cases, organizational optimization does not fully resolve the problem.
When employees have to manually move heavy boxes, pallets, or bags as part of the picking process, they expend energy that they can no longer devote to working with precision. Ergonomic lifting aids take that strain off them, allowing employees to stay focused longer and make fewer mistakes. The effect is evident not only in error rates but also in absenteeism and employee turnover.
Ergonomic equipment is also important when a workstation requires reaching products at awkward heights or positions. A well-chosen vacuum lifter, hoist, or mobile lifter can transform the workstation so that the right product is always available at the right height, which greatly reduces the risk of errors.
How Logitrans Handling Helps Reduce Picking Errors
At Logitrans Handling, we understand that errors in order picking are rarely a human problem, but almost always a workstation problem. That is why we address picking errors from an ergonomic and process-oriented perspective.
What we offer specifically:
- Free workstation analysis in which our specialists assess the physical demands, the layout, and the workflow
- Customized solutions for a wide range of applications, such as boxes, pallets, bags, drums, and rolls
- Ergonomic material-handling equipment that reduces physical strain and helps employees stay alert longer
- Demonstration space in Drongen where you can test our solutions with your own materials
- Maintenance contracts that ensure your equipment always operates at peak performance
- End-to-end support, from analysis through implementation to user training
Would you like to know which approach will make the biggest difference for your specific situation? Contact our specialists for a no-obligation consultation or a free workstation analysis.
Less effort, more performance
Lift more efficiently with ergonomic lifting solutions. Our specialists are happy to work with you to find the right solution.
