How to reduce musculoskeletal disorder risk in manufacturing
Musculoskeletal disorders (MSDs) are the most common cause of work-related ill health in UK manufacturing. They account for around 7.1 million lost working days a year, according to HSE statistics. Most of that absence is preventable. This guide explains what causes MSDs in production environments, what the law requires employers to do about it, and how engineering controls — specifically height-adjustable workstations — address the risk at source.
What musculoskeletal disorders are and what they cost
Musculoskeletal disorders are injuries and conditions affecting the muscles, joints, tendons, ligaments, nerves and bones. In manufacturing, the most common are:
- lower back pain and disc injury from repetitive bending, lifting and working in a stooped posture
- shoulder and neck strain from overhead reaching, prolonged static postures and repetitive arm movements
- upper limb disorders including repetitive strain injury (RSI), carpal tunnel syndrome and tendinopathies, from repetitive hand and wrist movements
- knee injury from prolonged kneeling, squatting or working on hard flooring
The damage accumulates gradually. A worker may carry out the same task at the same bench for months or years before symptoms become severe enough to require time off. When absence does occur it tends to be prolonged.
7.1 million working days lost to work-related MSDs in the UK each year (HSE)
33,000+ new cases of work-related MSDs reported in manufacturing each year (HSE)
£1,000+ estimated direct cost to employers per week of MSD-related absence, before accounting for lost output, recruitment and retraining
The cost to the employer extends beyond absence pay. Reduced output during the period before a worker takes leave, temporary cover and retraining costs, quality and error rates in fatigued workers, and civil liability where the employer knew of the risk and did not act — all contribute to the true cost of an uncontrolled MSD risk.
What the law requires employers to do
Three pieces of legislation are directly relevant to MSD risk in manufacturing.
Manual Handling Operations Regulations 1992
These regulations require employers to avoid hazardous manual handling where reasonably practicable, assess the risk of unavoidable hazardous handling, and reduce injury risk to the lowest level reasonably practicable. Manual handling covers lifting, lowering, pushing, pulling, carrying and supporting loads.
In assembly and production environments the most common manual handling MSD triggers are working at a bench set for the equipment rather than the worker, and repetitive operations carried out in awkward or forced postures because the bench height cannot be adjusted.
Health and Safety at Work etc. Act 1974 and the Management of Health and Safety at Work Regulations 1999
These establish a general duty to identify significant risks and implement controls. A risk assessment that identifies MSD risk in a production area creates a documented obligation to act. An employer who identifies MSD risk, records it and then does nothing is in a weaker legal position than one who has not assessed at all — because the assessment proves awareness.
Display Screen Equipment Regulations 1992
These regulations also apply to any worker who habitually uses display screen equipment as a significant part of their work, which in modern manufacturing increasingly includes workers using screens on production machinery, quality control stations and testing equipment. Where production workers use screens as part of their regular workstation activity, DSE assessment requirements apply.
The HSE launched a targeted inspection campaign in 2025 specifically focused on manual handling in manufacturing and construction. Inspectors are actively visiting sites. Companies that have not reviewed their MSD controls recently are at increased risk of receiving an improvement notice.
The main MSD risk factors in production and assembly environments
MSD risk in manufacturing is driven by a relatively small number of physical factors. Understanding them is the first step to controlling them.
Working at the wrong height
This is the most prevalent risk factor in bench-based production. When a worker operates at a bench that is too high, they raise their shoulders and abduct their arms, increasing the load on the shoulder and neck muscles. When the bench is too low, they stoop, placing sustained load on the lower back. The correct working height varies by individual (primarily stature) and by task. The HSE guidance sets the general principle: bench height should allow the worker to maintain an upright posture with elbows close to the body and forearms approximately horizontal. For most light assembly work this is between 900mm and 1,100mm. A fixed-height bench cannot meet these requirements for different workers or different tasks. An electric height-adjustable bench can meet all of them.
Repetitive movements
Assembly and production work is inherently repetitive. The same reach, grip, twist and release cycle may be performed hundreds or thousands of times per shift. Repetition alone is not the problem — it is repetition in combination with awkward posture, high force or insufficient recovery time that drives MSD risk. Engineering controls that reduce the reach distance, improve grip position and eliminate unnecessary rotation in each cycle significantly reduce the cumulative load on upper limb joints over a shift.
Awkward and static postures
Any posture held for an extended period creates static muscular load. Leaning forward to reach a component, turning the head to monitor a process, or extending the arms to operate controls all impose sustained load on specific muscle groups. Over a shift, this load accumulates.
Force
High-force tasks — particularly lifting, pressing and gripping — generate acute load on joints and soft tissue. A bench that requires a worker to support a heavy component at arm’s length while fitting a fastener is a high-force task that an adjustable, well-positioned bench can eliminate.
Vibration
Hand-arm vibration from power tools is a distinct risk factor covered by the Control of Vibration at Work Regulations 2005. However, vibration also contributes to MSD risk by fatiguing muscles, reducing grip sensitivity and leading workers to grip harder to compensate.
The hierarchy of controls for MSD risk
The same hierarchy of controls that applies to noise and vibration applies to MSD risk. Higher-level controls are preferred and should be implemented where reasonably practicable before relying on lower-level ones.
- Elimination. Remove the manual handling or awkward operation entirely. In manufacturing this may mean automating a task, redesigning the process sequence or using mechanical handling aids to remove human intervention from the highest-risk operations.
- Substitution. Replace a high-risk operation with a lower-risk one. For example, replacing a reach-and-twist operation with a turntable that brings the component to the worker.
- Engineering controls. Modify the workplace, workstation or equipment to reduce exposure to risk factors. This is the most commonly applicable level for bench-based manufacturing and includes height-adjustable workstations, component presentation systems, tool balancers, jigs and fixtures.
- Administrative controls. Reduce exposure through work organisation — job rotation, scheduled breaks, varying tasks to distribute load across different muscle groups.
- Personal protective equipment. Wrist supports, back belts and similar items sit at the bottom of the hierarchy and do not address the cause of MSD risk.
A back belt does not fix a workbench that is 200mm too low. An ergonomics training course does not fix a repetitive reach that could be eliminated by repositioning a component bin. Engineering controls are the only interventions that address the physical cause of MSD risk rather than its consequences.
Engineering controls for MSD risk in production environments
Height-adjustable workstations
An electric height-adjustable workstation is the most direct engineering control for the most prevalent MSD risk factor in manufacturing: working at the wrong height. It allows each worker to set the bench to the correct height for their stature and task before starting work, and to adjust it again if the task changes during the shift.
OTTOKIND electric height-adjustable workstations for assembly and production adjust from 700mm to 1,250mm. Adjustment is electric and controlled at the bench, with preset height memory available so workers can return to their correct setting at the start of each shift. The modular superstructure allows tool storage, shelving, lighting, power supply and component presentation to be configured to the specific task.
Component presentation and reach zone optimisation
The reach zone is the area within which a worker can operate without extending beyond a comfortable reach distance. The primary reach zone — directly in front of the worker with the elbow bent — should contain the most frequently used components and tools. A modular workstation superstructure allows bins, shelving and tool holders to be positioned within the correct reach zones and adjusted as the task changes. This reduces the repetitive reach distance with every cycle, which compounds significantly over a shift of hundreds or thousands of cycles.
Jigs, fixtures and workholding
Where assembly operations require workers to hold and support a component while performing a secondary task, a jig or fixture that holds the component eliminates the static grip and support load. This reduces both upper limb force and the awkward postures associated with stabilising a component by hand.
Tool balancers and suspension systems
Power tools suspended from a balancer above the workstation do not need to be lifted by the operator between uses. The balancer holds the tool at the correct height, ready for use, and returns it automatically after each cycle. This eliminates the repeated lift-and-lower motion that contributes to shoulder and upper arm MSD risk in assembly operations where power tools are used frequently.
How to specify the right workstation for your process
Not all height-adjustable workstations are the same. The right specification depends on the task, the load, the tools involved and the layout of the production area.
| Requirement | What to specify |
|---|---|
| Light assembly, electronics, quality inspection | Height range 700–1,250mm; ESD laminate surface; modular superstructure with tool holders and bin rails; cable management |
| Medium assembly with components up to 150 kg | Height range 700–1,250mm; reinforced worktop; integrated lighting; modular shelving above for components |
| Lean or 5S production cell | Modular and reconfigurable superstructure; visual management panel; shadow board integration |
| Cobot or collaborative robot integration | Cobot-ready mounting points; cable routing for robot arm; worktop configuration for shared human-robot workspace |
| Multiple operators sharing one station across shifts | Preset height memory (one setting per operator); easy-adjust control panel at the front of the bench |
OTTOKIND workstations are configured to order from a modular system. The base frame, height range, worktop material, superstructure configuration and accessories are specified to match the task. DRH KIND provide specification support as part of the initial consultation.
The business case: productivity, absence and tax relief
Reduced MSD absence
The most direct financial benefit of reducing MSD risk is fewer working days lost to absence. A height-adjustable workstation that prevents one MSD-related absence per year for one worker typically pays for itself within 12 months at UK manufacturing wage rates, before accounting for the cost of temporary cover, quality impact and management time.
Improved throughput and quality
Fatigue degrades performance. A worker operating at the wrong bench height tires faster, makes more errors and produces less consistent output over a shift. A workstation set to the correct height reduces postural fatigue, which has a measurable effect on both throughput rate and error rate over the course of a shift. The productivity case for ergonomic workstations is independent of the compliance case — both point in the same direction.
Support for lean and 5S programmes
A well-configured ergonomic workstation enforces standard work. The tool positions, component presentation and working height are fixed by the design of the station rather than left to individual workers. This supports repeatable standard work, reduces method variation between operators and makes deviations from standard immediately visible.
Annual Investment Allowance
OTTOKIND workstations qualify as plant and machinery under the Annual Investment Allowance (AIA). This means 100% of the purchase cost is deductible from taxable profits in the year of purchase. For a business on 25% corporation tax, HMRC effectively contributes a quarter of the cost. For a business investing £20,000 in workstation upgrades, the after-tax cost is £15,000 at a 25% tax rate. Speak to your accountant to confirm your specific position before committing.
Book a free 15-minute workstation review
If you have MSD absence in your production or assembly teams, or if a risk assessment has identified workstation-related risk that has not yet been addressed, a free 15-minute review by phone or Teams will help you understand what a practical engineering solution looks like for your environment.
In that call we will:
- discuss the tasks, benches and operators involved
- identify whether electric height-adjustable workstations are the right control for your situation
- give you a specification outline and a budget indication
No site visit required at the initial stage and no obligation to proceed.