It is possible to remove boxes from a pallet without risking back problems by adopting the correct lifting posture, optimizing the working height, and using lifting aids when necessary. Back strain from manual lifting in the warehouse is one of the leading causes of long-term absenteeism. This article answers the most frequently asked questions about ergonomic box lifting, from the most dangerous movements to the right tools.
Which movements when lifting boxes can cause back pain?
The movements that cause the most back injuries when lifting boxes are bending over with a straight back, twisting the torso while bearing a load, and reaching for boxes that are outside your immediate reach. If you combine two or more of these movements at the same time, the strain on your back increases exponentially, and the risk of acute or chronic symptoms rises sharply.
When handling boxes in a warehouse, an employee repeats these movements dozens or even hundreds of times a day. It is precisely this repetition that makes it dangerous. Even a relatively light box weighing five kilograms can, if lifted incorrectly on a regular basis, lead to wear and tear on the intervertebral discs and muscle problems in the lower back.
The situations that pose the greatest risk are:
- Picking up boxes from the floor or from a low pallet layer while bending over
- Twisting Your Upper Body While Holding a Box
- Reaching for boxes at the back or on top of a tall pallet
- Lifting boxes above shoulder height, which puts strain on the shoulders and neck
- Prolonged lifting without sufficient breaks, causing muscle fatigue
The golden rule for lifting boxes ergonomically is to keep the load as close to your body as possible, keep your back straight, and avoid twisting your torso by turning your feet instead.
What is the maximum height a pallet can be stacked to ensure safe lifting?
As a guideline for safe lifting, boxes should not be stacked higher than shoulder height, which for most adults means a maximum pallet height of approximately 150 to 160 centimeters. Boxes that extend above shoulder height require unnatural arm positions and significantly increase the strain on the neck, shoulders, and back.
But the bottom layers of a pallet also pose a risk. Picking up boxes from the floor or just above the floor forces the employee to bend over deeply or squat, which puts a heavy strain on the lower back. The optimal grip zone for manual lifting is between knee height and shoulder height, preferably around the waist.
In practice, this means that a standard Euro pallet 15 centimeters high, plus a stack of boxes, quickly falls outside the ideal reach zone once you reach the bottom or top layers. From an ergonomic standpoint, it is therefore advisable never to unload pallets manually from top to bottom without height adjustment. A lifting device that keeps the pallet at working height provides a permanent solution to this problem.
Less effort, more performance
Lift more efficiently with ergonomic lifting solutions. Our specialists are happy to work with you to find the right solution.
What lifting aids are useful for unloading boxes from a pallet?
When unloading boxes from a pallet, the most effective lifting aids are vacuum lifters, pallet jacks with adjustable working heights, and ergonomic lifting aids that partially take the load off the user. The best choice depends on the weight of the boxes, the frequency of the task, and the available space in the warehouse.
Check out the products available for various applications. The most commonly used solutions are:
- Vacuum lifters: Ideal for boxes with a flat, closed top. The vacuum lifter attaches itself to the box and fully supports its weight, so that the employee only needs to guide the box. This virtually eliminates strain on the back.
- Height-adjustable pallet lifters: These lift the entire pallet to the correct working height, so that every layer of boxes is accessible at an ergonomically comfortable height. Employees no longer have to bend over or reach up.
- Mobile lifts: For situations where flexibility is important, mobile lifts offer a versatile solution that can be used in a variety of work environments.
- Ergonomic lifting aids with spring balance: Lighter systems that compensate for the weight of the load and support the employee during repetitive lifting.
Choosing the right tool depends heavily on the specific situation. A thorough analysis of the workstation provides insight into which solution most effectively reduces back strain without limiting productivity.
When is a pallet tipper the right solution?
A pallet tipper is the right solution when boxes need to be systematically unloaded from a full pallet and the contents or packaging are suitable for tipping, or when changing pallets is a recurring, time-consuming task. The pallet tipper tilts the entire load to an angle that makes the top boxes immediately accessible at an ergonomically optimal height.
In practice, a pallet tipper is used in situations such as:
- Transferring goods from a shipping pallet to a production or storage pallet
- Making the top of a pallet accessible without reaching or climbing
- Production environments where pallets containing boxes or other packaging must be rotated for further processing
A pallet tipper is less suitable when the boxes or their contents are fragile and cannot withstand the tilting motion, or when the load is stacked unsteadily. In such cases, a pallet lifter system with an adjustable working height is preferable. The choice between the two systems therefore depends on the nature of the goods and the specific operation that is performed repeatedly.
How do you conduct a workstation analysis for material-handling tasks?
To conduct a workstation analysis for handling tasks, you map out the entire process step by step: what movements are made, what weights are handled, how often the task is repeated, and what postures are adopted during the task. Based on that analysis, you determine what ergonomic risks are present and what adjustments or assistive devices can reduce the physical strain.
An effective job analysis includes the following steps:
- Observe the task in practice: Watch how employees perform the task, not how they say they do it. Note bending movements, twisting movements, and reaching distances.
- Assess weights and frequencies: How heavy are the boxes? How many tasks does an employee perform per hour or per day? Cumulative strain is at least as important as the weight per task.
- Assess the working height and reach zone: Is the load consistently within the ergonomic reach zone between the knee and the shoulder? If not, adjusting the height is a priority.
- Identify problem areas: Which specific moments in the task are the most physically demanding? Bending over to reach the bottom layer of pallets? Reaching up to the top? Twisting while placing items?
- Evaluate existing tools: Are any tools already being used? Are they suitable for the task, or do they create new bottlenecks?
- Propose solutions and test them: Introduce adjustments or tools and evaluate whether the workload is effectively reduced without compromising efficiency.
A workstation analysis is not a one-time exercise. Changes to products, packaging, or work processes require a review of the analysis. If in doubt, consult a specialist with experience in ergonomic material handling in industrial settings.
How Logitrans Handling Helps with Ergonomic Box Lifting
At Logitrans Handling, we guide companies from start to finish in resolving ergonomic issues related to lifting and moving boxes. Our approach is practical and tailored to each client’s needs:
- Free Workstation Analysis: Our specialists will visit your site to assess the ergonomic risks associated with your material-handling tasks.
- Wide range of products: From vacuum lifters and mobile lifters to pallet inverters and pallet trucks, we offer the right solution for every situation.
- Demonstration Area in Drongen: You can test the lifting solutions with your own boxes and materials, so you can be sure which system best suits your workstation.
- Training and After-Sales Support: Upon installation, we ensure that users receive proper training and offer maintenance contracts to keep the equipment in optimal condition.
- Semi-automation solutions: For intensive material-handling tasks, we also offer automated systems that completely eliminate back strain and increase productivity.
Would you like to know which solution best suits your situation? Contact us for a no-obligation consultation or a free, customized 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.
