What skipping ergonomics really costs

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FullSharp · since 1991

Quick answer: Manual lifting needs no equipment budget, but the plant still pays through sick days, replacement workers, turnover, dropped products and machines waiting at the end of the shift. Add these up from 12 months of real data for the station and many plants are surprised by the total. Divide the price of lift-assist equipment by the yearly saving, minus maintenance, and you have the payback time, which for heavy, repetitive stations is usually shorter than people expect.

"Our people can lift it, it costs nothing"

When we survey a plant and ask about the stations where sacks or boxes are lifted by hand, this is the answer we hear most often. True, nothing is spent on equipment. But money still goes out. It just leaves through other doors, spread across several departments, and nobody adds it up.

Lifting a 25 kg sack a few dozen times at the start of a shift feels fine. By the end of the shift, after a few hundred bends and lifts, backs and shoulders start to complain. A few months later someone takes a few days off, then someone quits. Ergonomic guidelines usually put the limit for a single lift at around 23–25 kg, and that assumes a good posture. Bend low, twist or reach out and the safe weight drops a lot.

Where the money goes when workers lift by hand

Some costs are easy to see: sick days, medical bills, replacement workers, overtime to catch up on output. Then there is turnover. You hire someone new, train them for a few weeks, accept lower output in the meantime, and sometimes the new hire leaves before they have settled in.

The harder-to-see costs are usually ignored. A carton drops and the corner caves in, a machined part gets scratched. Toward the end of the shift people are tired and the machine waits for material. Heavy stations can only be staffed by strong men, so scheduling becomes a headache when you are short of people. And when a customer comes to audit the plant, the manual lifting station is almost always on the list of things to fix.

Adding up the cost of your own lifting station

Every plant is different, so we do not quote a general figure. The simplest way is to take the real numbers for that station over the last 12 months, from records the plant already keeps:

Cost item	Where to find the numbers
Sick leave, replacement workers, overtime	Attendance and payroll records for the station
Turnover, hiring and training	HR: resignations, hiring cost, time spent training new people
Dropped and damaged products	Quality department defect records
End-of-shift slowdown, machine waiting	Hourly output and machine downtime waiting for material

Add it up for one station, multiply by the number of similar stations, and many plants are surprised by the total. Only then does it make sense to put the lift-assist quote next to it: divide the equipment price by the yearly cost you avoid, minus maintenance, and you have the payback time. For heavy, repetitive stations it usually comes out much shorter than people expect.

Buy the right equipment for the job

A wrong investment can cost more than no investment. If the equipment is too bulky and slow, workers leave it in the corner and go back to lifting by hand. If it is too weak, it simply cannot be used. This is how we usually match equipment to the task:

Task	Suitable equipment	Typical capacity
Repetitive sack and carton handling	Vacuum tube lifter	Up to about 200 kg
Loading parts into machines, rotating or tilting	Lift-assist manipulator	20–250 kg
Lifting around one machine or a small cell	Pneumatic jib crane	Up to about 200 kg
Covering a packing area, warehouse or several machines	Overhead rail system	Aluminum rail 200 kg, steel rail 500 kg
Assembly that needs precise positioning	Servo balancing hoist	20–750 kg

The projects below show what that means in practice. The goal is always to stop manual lifting, but a sack station is not a CNC loading station, and tilting rolls is a different job from pouring chemical raw material or lifting wheel rims. Each one got its own setup and its own gripping tool.

Where to start

You do not need to fix the whole plant at once. What works best, in our experience, is a walk around the shop floor. Note the stations where loads are above 15–20 kg, the lifting is repetitive, people bend or reach far, or simply where someone keeps complaining about their back. For each one, write down the weight, lifts per shift, sick days, resignations over the year and damaged products.

Add up the cost as in the table above and start with the most expensive station. After 3–6 months, measure sick days, damage and output again. With real numbers in hand, getting budget approval for the next stations is much easier.

One thing never fits in a spreadsheet. Once a heavy station has the right equipment, one person does what used to take two, women can work that station too, and people stay longer.

Real projects installed by FullSharp

Mobile Jib Crane for Lifting Wheel Rims with a Pneumatic Cylinder

Wall-Mounted Aluminum Rail Jib Crane with Vacuum Tube Lifter for Sacks

5T Rail and 200 kg Vacuum Tube Lifter for Carton Boxes

Pneumatic Manipulator Loads Workpieces into CNC Mill/Lathe

Pneumatic Manipulator for Lifting and Tilting Rolls

Pneumatic Manipulator for Material Discharge at Chemical Plants

Column-Mounted Manipulator for Transformer Component Assembly

120 kg Mobile Manipulator with Height-Adjustable Column

Equipment in operation (videos)

Vacuum tube lifter for 25–50 kg sugar and powder sacks

Pneumatic manipulator lifting wheel rims

Manipulator lifting and tilting 98–268 kg rolls

Frequently asked questions

What is ergonomics in a factory?

Put simply, it means arranging tasks, workstations and equipment to fit the people doing the work, so they bend, reach, lift heavy loads and repeat the same movement less, which is what causes back, shoulder and wrist pain.

How much should one worker lift at most?

Ergonomic guidelines usually put it at around 23–25 kg per lift, in the best possible posture. With bending, twisting, long reach or lifting all shift long it should be much lower, or handled with lift-assist equipment.

How do I work out the payback of lift-assist equipment?

Add up a year of costs at the manual station (sick days, replacements, turnover, damage, lost output), subtract the maintenance cost, and divide the equipment price by what is left.

Which station should we fix first?

Loads above 15–20 kg, frequent lifting, bending or long reach, people off sick or quitting, or machines and lines that keep waiting. Start with the one that costs the most.

Does FullSharp visit the station before quoting?

Yes, free of charge. We look at the load, how it can be gripped, the layout and the air and power supply before proposing anything.

If you have stations where people still lift by hand, send FullSharp the product type, weight, lifts per shift and a few photos or a video of the station. We will come and survey it and propose equipment free of charge.

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Skipping ergonomics: what one manual lifting station really costs