Manual vs robotic palletizing: cost, injuries and NOM-036
From 3 shifts with 2 people per shift, the robot pays for itself: a US$100,000 cell takes 23 to 31 months, counting labor only (Target Robotics calculation with assumptions).
| By hand | With a robotic palletizer | |
|---|---|---|
| Speed | 8 to 10 cases per minute, dropping to 5 or 6 between hours 6 and 8 (Seraphim Vietnam, 2026) | Steady all shift; 15 to 60 cases per minute |
| Load per piece | 25 kg for men, 20 kg for women, ages 18 to 45 (NOM-036, Mexico's federal standard on manual handling) | Up to 50 kg in cases; more with a different tool |
| People, on 3 shifts | 6 or more; 7.2 with the 40-hour workweek in 2030 | Average target of 71% fewer operators (HowToRobot, 2026) |
| Annual cost, 3 shifts with 2 per shift | MXN 1,008,000 to MXN 1,368,000 | Maintenance, 3% to 5% of the price per year (Automation Distribution, 2026) |
| Injuries | Back disorders (dorsopathies), the leading cause of occupational illness: 2,940 cases in 2024 (IMSS, Mexico's social security institute) | The risk moves to the cell: safeguards, lockout and procedure |
| Turnover | 25% to 31% a year in manufacturing (Censos Económicos 2019, Mexico's economic census) | One trained technician, fewer people exposed |
| Upfront investment | Almost none | US$120,000 to US$550,000, as published |
Sources in each cell. IMSS: Memoria Estadística 2024, chapter VII. IMSS does not break out palletizing-specific injuries. Costs: Target Robotics calculation with MXN 14,000 to MXN 19,000 per person per month.
When should you stay manual?
- You run one shift at low volume.
- Your pieces weigh under 15 kg and the station is already ergonomic.
- Next year's volume is still uncertain.
Before automating, you can improve a lot with a lift table, a tilter or a vacuum lifter. When a robotic palletizer pays off.
When should you look at automation?
- You run 2 or 3 shifts with a large crew.
- Turnover no longer lets you keep the line staffed.
- You lift more than NOM-036 allows. What the standard requires.
- The 40-hour workweek forces you to hire. Run the numbers.
Questions about manual palletizing
What is manual palletizing?
It is placing cases or bags on a pallet by hand, and it makes sense on one shift at low volume. Manual palletizing has load limits under NOM-036-1-STPS-2018 and slows down as the shift goes on.
How do you palletize by hand?
With the product at hip height, no twisting at the trunk, and the pallet on a lift table so nobody bends down for the first layers. You also need the risk assessment NOM-036 requires, and you have to stay within the load limits.
How much weight can a worker lift?
NOM-036-1-STPS-2018 sets 25 kg for men and 20 kg for women aged 18 to 45 in routine manual handling. More conditions apply depending on the task, and other ages have different limits.
How much does manual palletizing cost per year?
One station with 2 people per shift on 3 shifts is 6 people: MXN 1,008,000 to MXN 1,368,000 a year, at a cost of MXN 14,000 to MXN 19,000 per person per month. Target Robotics calculation with assumptions.
What does the manual palletizing process look like?
One or two people take each case or bag off the belt, turn and set it on the pallet following a pattern, layer by layer. When the pallet is done they stretch wrap it and a forklift takes it away. Every lift counts toward the cumulative mass limit in NOM-036-1-STPS-2018.
Send your load, speed and shifts. We reply with a version and a price range.
Delivered in 12 weeks. Public price reference: US$120,000 (CSi) to US$550,000 (Kaufman), as of November 3, 2026.
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- 1What you palletize
- 2At what speed
- 3How many lines
- 4Your pallet
- 5How many shifts
- 6Space and city