Stacking and unstacking boxes is one of the most common tasks in warehouses, manufacturing environments, and distribution centers. Yet the physical risks involved are often underestimated. Repeatedly bending, reaching, twisting, and lifting above shoulder height are movements that, over time, can lead to back pain, shoulder injuries, and absenteeism. Those who take the process of ergonomic box stacking seriously are investing not only in the health of their employees but also in the continuity of their business operations.
In this guide, you'll learn, step by step, how to analyze, optimize, and equip your workstation with the right tools, so that handling boxes ergonomically is not the exception, but the standard.
Identify the risks associated with your current job
Before you make any changes, you need to understand where the bottlenecks are. A thorough risk analysis of the workstation is the foundation of any ergonomic improvement. Without this foundation, you run the risk of choosing solutions that solve one problem but create another.
Observe the stacking and unstacking process throughout an entire work shift. Pay attention to the following risk factors:
- Lifting height: Are boxes lifted off the floor or placed above shoulder height?
- Lifting weight: How heavy are the boxes, and are they moved individually or in groups?
- Lifting frequency: How often does the task occur per hour or per shift?
- Twisting and Reaching: Do employees need to twist or reach far while lifting?
- Work Pace: Is Time Pressure Leading to Unsafe Behavior?
Be sure to talk to the employees themselves as well. They know exactly where the problems lie. Make a note of complaints about fatigue, pain points, and times when the work feels particularly strenuous. After this step, you’ll have a clear picture of the ergonomic issues and will know exactly where improvements are needed.
Optimize the working height and layout of the workstation
Once you’ve identified the risks, you can address the workstation yourself. The physical layout of the workspace has a huge impact on the strain placed on the body. The goal is to limit the lifting zone to the area between hip and shoulder height, also known as the “green zone.” Lifting outside this zone significantly increases the risk of injury.
- Determine the optimal working height for a specific employee or group of employees. For most adults, this is between 75 and 110 cm from the floor.
- Adjust the height of workbenches, conveyors, or stacking stations so that boxes are placed and picked up within this zone.
- Make sure the path between stacking positions is clear and straight, so that you avoid having to turn while carrying a full box.
- Limit the horizontal reach: Keep the box as close to your body as possible while lifting.
After making the adjustments, check whether employees can actually work in an upright position without having to bend over or reach. If the layout still requires them to do so, additional aids are needed. More inspiration on box-handling applications can help you better assess the possibilities.
Choose the right tool for handling boxes
When the workstation has been physically optimized but the lifting itself remains too strenuous, a mechanical aid is the next step. Choosing the right aid depends on the weights, dimensions, frequency, and specific movements required for ergonomically lifting boxes.
Vacuum lifter for boxes
A vacuum lifter is ideally suited for the ergonomic stacking and unstacking of boxes. The device makes contact with the top of the box via suction cups and lifts the entire weight. The employee controls the movement but no longer has to carry any weight themselves. This makes it particularly effective for repetitive tasks or for boxes weighing five kilograms or more.
Mobile lifts and lifting aids
For situations where boxes are stacked at multiple locations or where flexibility is required, mobile lifters offer a good solution. They are portable and can be used at different workstations. When choosing a piece of equipment, always consider:
- The maximum lifting capacity of the device
- The minimum and maximum lifting heights
- The available space at the workstation
- The frequency of use and the number of employees who use it
- The nature of the boxes: Are they uniform in size or do they vary?
Ideally, test the tool you’ve chosen using your own boxes and in your own work environment before making a final decision. This will help you avoid a situation where a solution looks good on paper but doesn’t work in practice.
Integrate the tool correctly into the stacking process
A tool that isn’t properly integrated into the work process won’t be used. This is one of the most common pitfalls when making ergonomic investments. The technical solution is only half the story; operational integration determines whether the improvement actually takes hold.
- Position the tool at the workstation so that it is easily accessible. The fewer steps required to use it, the more likely employees are to use it effectively.
- Update the work instructions and procedures so that using the tool becomes the standard practice, not the exception.
- Provide a brief training session or demonstration for all employees involved. Explain why the tool is there and how to use it correctly.
- Appoint a designated person to be responsible for day-to-day use and for reporting malfunctions or anomalies.
After the first week of work, verify whether the tool is actually being used. Observe the process again and ask employees about their experiences. If the tool is being set aside, investigate why: is it too cumbersome, not powerful enough, or is there resistance due to unfamiliarity? Make adjustments as needed.
Validate the ergonomic improvement after implementation
The final step is also the one most often overlooked: measuring whether the adjustments have actually had the desired effect. Ergonomic improvement is not a one-time effort, but an ongoing process of monitoring and making adjustments.
- Repeat the risk assessment from step one after four to eight weeks of using the device. Compare the results with the initial situation.
- Record complaints and reports from employees regarding physical strain. A decrease in complaints is a direct indicator of success.
- If possible, measure productivity: in most cases, ergonomic work practices also lead to greater efficiency, because employees become less fatigued.
- Schedule a periodic review of the workstation, especially when the product line, packaging sizes, or staffing levels change.
If the validation shows that complaints have decreased and the process is running more smoothly, the ergonomic improvement has been successful. If bottlenecks persist, go back to step one and analyze the situation again. Ergonomics is an iterative process.
How Logitrans Handling Helps with Ergonomic Stacking of Boxes
Logitrans Handling guides companies from start to finish in the ergonomic design of workstations for stacking and unstacking boxes. Our approach is practical and customized:
- Free workplace analysis: Our specialists will visit your site to identify risks and bottlenecks.
- Wide product range: from vacuum lifters to mobile lifters, tailored to the weight, frequency, and work environment.
- Demonstration Room in Drongen: Test our solutions with your own boxes so you can be sure you're making the right choice before you invest.
- Training upon installation: We ensure that employees can operate the equipment correctly and safely.
- Maintenance Contracts: For uninterrupted and safe long-term operation.
Would you like to know which solution is best suited for your workstation? Contact us, and together we’ll explore how we can make stacking and unstacking boxes in your company more ergonomic and efficient.
