ISCO-08 8342
Earthmoving and related plant operators
1.8%
ADI · 416th of 433 · 95% interval 0.0–5.2
An AI agent can at least partly carry out 1.8% of the task time of earthmoving and related plant operators, and finish 0.0% alone. The barrier that holds most of the rest back is access to the systems the work runs on.
ADI · partial or full1.8%
416th of 433 · interval 0.0–5.2
ADI3 · full delegation0.0%
201st of 433 · interval 0.0–0.0
ADIs · share of time7.5%
419th of 433 · interval 5.7–9.9
Evidence73
task statements rated by two models and weighted by importance and frequency. World employment: 5.9 million.
Task weight by level
How the tasks rate
L0No meaningful role · 92.3%L1Augmentation · 5.8%L2Partial delegation · 1.9%L3Full delegation · 0.0%
Barriers
What stops the agent
Share of task weight flagged by each barrier; a task can carry several.
73 task statements, heaviest first
| Task statement (O*NET occupation) | Weight | Level | Sonnet · Haiku | Share | Human time | Barriers |
|---|---|---|---|---|---|---|
| Move hand and foot levers of hoisting equipment to position piling leads, hoist piling into leads, and position hammers over pilings.Pile Driver Operators | 5.0% | L0 | L0L0 | 1% | 22 min | Physical presence, Accountability, Access to systems |
| Move levers to position dredges for excavation, to engage hydraulic pumps, to raise and lower suction booms, and to control rotation of cutterheads.Dredge Operators | 4.9% | L0 | L0L0 | 3% | 2.2 h | Physical presence, Accountability, Access to systems |
| Move levers and turn valves to activate power hammers, or to raise and lower drophammers that drive piles to required depths.Pile Driver Operators | 4.5% | L0 | L0L0 | 4% | 38 min | Physical presence, Accountability, Access to systems |
| Drive pilings to provide support for buildings or other structures, using heavy equipment with a pile driver head.Pile Driver Operators | 4.5% | L0 | L0L0 | 6% | 3.0 h | Physical presence, Accountability, Access to systems |
| Conduct pre-operational checks on equipment to ensure proper functioning.Pile Driver Operators | 4.3% | L0 | L0L1 | 12% | 30 min | Physical presence, Accountability, Access to systems |
| Start power winches that draw in or let out cables to change positions of dredges, or pull in and let out cables manually.Dredge Operators | 4.1% | L0 | L0L0 | 4% | 10 min | Physical presence, Accountability, Access to systems |
| Clean, lubricate, and refill equipment.Pile Driver Operators | 4.0% | L0 | L0L0 | 4% | 52 min | Physical presence, Accountability, Access to systems |
| Start and stop engines to operate equipment.Dredge Operators | 3.7% | L0 | L0L0 | 4% | 8 min | Physical presence, Accountability, Access to systems |
| Lower anchor poles to verify depths of excavations, using winches, or scan depth gauges to determine depths of excavations.Dredge Operators | 3.5% | L0 | L1L0 | 8% | 25 min | Physical presence, Accountability, Access to systems |
| Pump water to clear machinery pipelines.Dredge Operators | 3.4% | L0 | L0L0 | 4% | 38 min | Physical presence, Accountability, Access to systems |
| Direct or assist workers placing shore anchors and cables, laying additional pipes from dredges to shore, and pumping water from pontoons.Dredge Operators | 2.7% | L0 | L0L1 | 10% | 1.8 h | Physical presence, Accountability, Trust and care, Access to systems |
| Start machine, engage clutch, and push and move levers to guide machine along forms or guidelines and to control the operation of machine attachments.Paving, Surfacing, and Tamping Equipment Operators | 1.7% | L0 | L0L0 | 2% | 2.3 h | Physical presence, Accountability, Access to systems |
| Control paving machines to push dump trucks and to maintain a constant flow of asphalt or other material into hoppers or screeds.Paving, Surfacing, and Tamping Equipment Operators | 1.4% | L0 | L0L0 | 4% | 2.5 h | Physical presence, Accountability, Access to systems |
| Learn and follow safety regulations.Operating Engineers and Other Construction Equipment Operators | 1.4% | L1 | L1L2 | 35% | 1.5 h | Physical presence, Accountability, Access to systems |
| Operate machines to spread, smooth, level, or steel-reinforce stone, concrete, or asphalt on road beds.Paving, Surfacing, and Tamping Equipment Operators | 1.4% | L0 | L0L0 | 4% | 2.5 h | Physical presence, Accountability, Access to systems |
Show the other 58 tasks
| Task statement (O*NET occupation) | Weight | Level | Sonnet · Haiku | Share | Human time | Barriers |
|---|---|---|---|---|---|---|
| Start engines, move throttles, switches, or levers, or depress pedals to operate machines, such as bulldozers, trench excavators, road graders, or backhoes.Operating Engineers and Other Construction Equipment Operators | 1.3% | L0 | L0L0 | 1% | 30 min | Physical presence, Accountability, Access to systems |
| Fill tanks, hoppers, or machines with paving materials.Paving, Surfacing, and Tamping Equipment Operators | 1.3% | L0 | L0L0 | 4% | 18 min | Physical presence |
| Coordinate truck dumping.Paving, Surfacing, and Tamping Equipment Operators | 1.3% | L0 | L0L1 | 10% | 8 min | Physical presence, Trust and care, Access to systems |
| Observe distribution of paving material to adjust machine settings or material flow, and indicate low spots for workers to add material.Paving, Surfacing, and Tamping Equipment Operators | 1.3% | L0 | L0L0 | 4% | 22 min | Physical presence, Access to systems |
| Take actions to avoid potential hazards or obstructions, such as utility lines, other equipment, other workers, or falling objects.Operating Engineers and Other Construction Equipment Operators | 1.3% | L0 | L0L1 | 6% | 12 min | Physical presence, Accountability, Access to systems |
| Set up and tear down equipment.Paving, Surfacing, and Tamping Equipment Operators | 1.3% | L0 | L0L1 | 4% | 1.0 h | Physical presence, Accountability |
| Drive machines onto truck trailers, and drive trucks to transport machines and material to and from job sites.Paving, Surfacing, and Tamping Equipment Operators | 1.2% | L0 | L0L0 | 4% | 1.3 h | Physical presence, Accountability, Access to systems |
| Shovel blacktop.Paving, Surfacing, and Tamping Equipment Operators | 1.2% | L0 | L0L0 | 0% | 40 min | Physical presence |
| Inspect, clean, maintain, and repair equipment, using mechanics' hand tools, or report malfunctions to supervisors.Paving, Surfacing, and Tamping Equipment Operators | 1.2% | L0 | L0L1 | 8% | 45 min | Physical presence, Accountability, Access to systems |
| Load and move dirt, rocks, equipment, or other materials, using trucks, crawler tractors, power cranes, shovels, graders, or related equipment.Operating Engineers and Other Construction Equipment Operators | 1.2% | L0 | L0L0 | 4% | 2.3 h | Physical presence, Accountability, Access to systems |
| Drive and maneuver equipment equipped with blades in successive passes over working areas to remove topsoil, vegetation, or rocks or to distribute and level earth or terrain.Operating Engineers and Other Construction Equipment Operators | 1.2% | L0 | L0L0 | 4% | 2.5 h | Physical presence, Accountability, Access to systems |
| Operate oil distributors, loaders, chip spreaders, dump trucks, and snow plows.Paving, Surfacing, and Tamping Equipment Operators | 1.1% | L0 | L0L0 | 2% | 4.5 h | Physical presence, Accountability, Access to systems |
| Check fuel supplies at sites to ensure adequate availability.Operating Engineers and Other Construction Equipment Operators · supplemental task | 1.1% | L1 | L1L2 | 28% | 18 min | Physical presence, Access to systems |
| Coordinate machine actions with other activities, positioning or moving loads in response to hand or audio signals from crew members.Operating Engineers and Other Construction Equipment Operators | 1.1% | L0 | L0L0 | 2% | 20 min | Physical presence, Accountability, Trust and care, Access to systems |
| Light burners or start heating units of machines, and regulate screed temperatures and asphalt flow rates.Paving, Surfacing, and Tamping Equipment Operators | 1.1% | L0 | L0L0 | 4% | 18 min | Physical presence, Access to systems |
| Operate tamping machines or manually roll surfaces to compact earth fills, foundation forms, and finished road materials, according to grade specifications.Paving, Surfacing, and Tamping Equipment Operators | 1.0% | L0 | L0L0 | 4% | 3.0 h | Physical presence, Accountability, Access to systems |
| Move levers, depress foot pedals, and turn dials to operate power machinery, such as power shovels, stripping shovels, scraper loaders, or backhoes.Excavating and Loading Machine and Dragline Operators, Surface Mining | 1.0% | L0 | L0L0 | 4% | 4.3 h | Physical presence, Accountability, Access to systems |
| Align machines, cutterheads, or depth gauge makers with reference stakes and guidelines or ground or position equipment, following hand signals of other workers.Operating Engineers and Other Construction Equipment Operators | 1.0% | L0 | L0L0 | 4% | 15 min | Physical presence, Accountability, Trust and care, Access to systems |
| Control traffic.Paving, Surfacing, and Tamping Equipment Operators | 1.0% | L0 | L0L1 | 6% | 2.5 h | Physical presence, Accountability, Access to systems |
| Operate tractors or bulldozers to perform such tasks as clearing land, mixing sludge, trimming backfills, or building roadways or parking lots.Operating Engineers and Other Construction Equipment Operators | 1.0% | L0 | L0L0 | 4% | 3.0 h | Physical presence, Accountability, Access to systems |
| Talk to clients and study instructions, plans, or diagrams to establish work requirements.Operating Engineers and Other Construction Equipment Operators · supplemental task | 1.0% | L2 | L2L2 | 50% | 52 min | Physical presence, Trust and care, Access to systems |
| Monitor operations to ensure that health and safety standards are met.Operating Engineers and Other Construction Equipment Operators | 0.9% | L1 | L1L2 | 25% | 45 min | Physical presence, Accountability, Trust and care, Access to systems |
| Repair and maintain equipment, making emergency adjustments or assisting with major repairs as necessary.Operating Engineers and Other Construction Equipment Operators | 0.9% | L0 | L0L2 | 15% | 1.5 h | Physical presence, Accountability, Access to systems |
| Operate machines that clean or cut expansion joints in concrete or asphalt and that rout out cracks in pavement.Paving, Surfacing, and Tamping Equipment Operators · supplemental task | 0.9% | L0 | L0L0 | 2% | 2.5 h | Physical presence, Access to systems |
| Adjust handwheels and depress pedals to control attachments, such as blades, buckets, scrapers, or swing booms.Operating Engineers and Other Construction Equipment Operators | 0.9% | L0 | L0L0 | 1% | 20 min | Physical presence, Accountability, Access to systems |
| Keep records of material or equipment usage or problems encountered.Operating Engineers and Other Construction Equipment Operators | 0.9% | L2 | L2L2 | 55% | 15 min | Physical presence, Access to systems |
| Drive and operate curbing machines to extrude concrete or asphalt curbing.Paving, Surfacing, and Tamping Equipment Operators · supplemental task | 0.9% | L0 | L0L1 | 6% | 2.5 h | Physical presence, Accountability, Access to systems |
| Locate underground services, such as pipes or wires, prior to beginning work.Operating Engineers and Other Construction Equipment Operators | 0.9% | L1 | L1L2 | 28% | 52 min | Physical presence, Accountability, Access to systems |
| Become familiar with digging plans, machine capabilities and limitations, and efficient and safe digging procedures in a given application.Excavating and Loading Machine and Dragline Operators, Surface Mining | 0.9% | L1 | L1L2 | 42% | 3.0 h | Physical presence, Accountability, Access to systems |
| Observe hand signals, grade stakes, or other markings when operating machines so that work can be performed to specifications.Excavating and Loading Machine and Dragline Operators, Surface Mining | 0.8% | L0 | L0L0 | 4% | 4.3 h | Physical presence, Accountability, Trust and care, Access to systems |
| Set up or inspect equipment prior to operation.Excavating and Loading Machine and Dragline Operators, Surface Mining | 0.8% | L0 | L0L2 | 18% | 25 min | Physical presence, Accountability, Access to systems |
| Set up forms and lay out guidelines for curbs, according to written specifications, using string, spray paint, and concrete or water mixes.Paving, Surfacing, and Tamping Equipment Operators · supplemental task | 0.8% | L0 | L0L1 | 8% | 1.8 h | Physical presence, Access to systems |
| Signal operators to guide movement of tractor-drawn machines.Operating Engineers and Other Construction Equipment Operators | 0.8% | L0 | L0L0 | 2% | 20 min | Physical presence, Accountability, Trust and care, Access to systems |
| Operate machinery to perform activities such as backfilling excavations, vibrating or breaking rock or concrete, or making winter roads.Excavating and Loading Machine and Dragline Operators, Surface Mining | 0.8% | L0 | L0L0 | 2% | 2.4 h | Physical presence, Accountability, Access to systems |
| Install dies, cutters, and extensions to screeds onto machines, using hand tools.Paving, Surfacing, and Tamping Equipment Operators · supplemental task | 0.8% | L0 | L0L0 | 2% | 45 min | Physical presence |
| Operate loaders to pull out stumps, rip asphalt or concrete, rough-grade properties, bury refuse, or perform general cleanup.Operating Engineers and Other Construction Equipment Operators | 0.8% | L0 | L0L0 | 4% | 2.5 h | Physical presence, Accountability, Access to systems |
| Move materials over short distances, such as around a construction site, factory, or warehouse.Excavating and Loading Machine and Dragline Operators, Surface Mining | 0.8% | L0 | L0L0 | 4% | 45 min | Physical presence, Accountability, Access to systems |
| Connect hydraulic hoses, belts, mechanical linkages, or power takeoff shafts to tractors.Operating Engineers and Other Construction Equipment Operators | 0.7% | L0 | L0L0 | 4% | 18 min | Physical presence |
| Cut or break up pavement and drive guardrail posts, using machines equipped with interchangeable hammers.Paving, Surfacing, and Tamping Equipment Operators · supplemental task | 0.7% | L0 | L0L0 | 2% | 1.8 h | Physical presence, Accountability |
| Place strips of material, such as cork, asphalt, or steel into joints, or place rolls of expansion-joint material on machines that automatically insert material.Paving, Surfacing, and Tamping Equipment Operators · supplemental task | 0.7% | L0 | L0L0 | 2% | 30 min | Physical presence, Accountability, Access to systems |
| Measure and verify levels of rock or gravel, bases, or other excavated material.Excavating and Loading Machine and Dragline Operators, Surface Mining · supplemental task | 0.7% | L0 | L0L2 | 20% | 22 min | Physical presence, Accountability, Access to systems |
| Receive written or oral instructions regarding material movement or excavation.Excavating and Loading Machine and Dragline Operators, Surface Mining | 0.7% | L1 | L1L2 | 45% | 5 min | Physical presence, Access to systems |
| Select and fasten bulldozer blades or other attachments to tractors, using hitches.Operating Engineers and Other Construction Equipment Operators | 0.7% | L0 | L0L0 | 4% | 38 min | Physical presence, Accountability |
| Drive tractor-trailer trucks to move equipment from site to site.Operating Engineers and Other Construction Equipment Operators · supplemental task | 0.7% | L0 | L0L0 | 4% | 2.3 h | Physical presence, Accountability, Access to systems |
| Direct ground workers engaged in activities such as moving stakes or markers, or changing positions of towers.Excavating and Loading Machine and Dragline Operators, Surface Mining · supplemental task | 0.6% | L0 | L0L1 | 9% | 22 min | Physical presence, Accountability, Trust and care, Access to systems |
| Adjust dig face angles for varying overburden depths and set lengths.Excavating and Loading Machine and Dragline Operators, Surface Mining · supplemental task | 0.6% | L0 | L0L1 | 12% | 30 min | Physical presence, Accountability, Access to systems |
| Create or maintain inclines or ramps.Excavating and Loading Machine and Dragline Operators, Surface Mining | 0.6% | L0 | L0L1 | 10% | 2.0 h | Physical presence, Accountability, Access to systems |
| Lubricate, adjust, or repair machinery and replace parts, such as gears, bearings, or bucket teeth.Excavating and Loading Machine and Dragline Operators, Surface Mining | 0.6% | L0 | L0L1 | 10% | 1.5 h | Physical presence, Accountability, Access to systems |
| Handle slides, mud, or pit cleanings or maintenance.Excavating and Loading Machine and Dragline Operators, Surface Mining | 0.6% | L0 | L0L0 | 4% | 2.5 h | Physical presence, Accountability, Access to systems |
| Perform manual labor to prepare or finish sites, such as shoveling materials by hand.Excavating and Loading Machine and Dragline Operators, Surface Mining · supplemental task | 0.5% | L0 | L0L0 | 4% | 1.0 h | Physical presence |
| Drive machines to work sites.Excavating and Loading Machine and Dragline Operators, Surface Mining · supplemental task | 0.5% | L0 | L0L0 | 2% | 20 min | Physical presence, Accountability, Access to systems |
| Operate compactors, scrapers, or rollers to level, compact, or cover refuse at disposal grounds.Operating Engineers and Other Construction Equipment Operators · supplemental task | 0.5% | L0 | L0L1 | 6% | 4.5 h | Physical presence, Accountability, Access to systems |
| Direct workers engaged in placing blocks or outriggers to prevent capsizing of machines when lifting heavy loads.Excavating and Loading Machine and Dragline Operators, Surface Mining · supplemental task | 0.5% | L0 | L0L0 | 4% | 15 min | Physical presence, Accountability, Access to systems |
| Push other equipment when extra traction or assistance is required.Operating Engineers and Other Construction Equipment Operators · supplemental task | 0.5% | L0 | L0L0 | 2% | 20 min | Physical presence, Accountability, Access to systems |
| Operate equipment to demolish or remove debris or to remove snow from streets, roads, or parking lots.Operating Engineers and Other Construction Equipment Operators | 0.5% | L0 | L0L0 | 4% | 2.5 h | Physical presence, Accountability, Access to systems |
| Turn valves to control air or water output of compressors or pumps.Operating Engineers and Other Construction Equipment Operators · supplemental task | 0.4% | L0 | L0L0 | 5% | 10 min | Physical presence, Accountability, Access to systems |
| Operate road watering, oiling, or rolling equipment, or street sealing equipment, such as chip spreaders.Operating Engineers and Other Construction Equipment Operators · supplemental task | 0.4% | L0 | L0L1 | 5% | 2.5 h | Physical presence, Accountability, Access to systems |
| Test atmosphere for adequate oxygen or explosive conditions when working in confined spaces.Operating Engineers and Other Construction Equipment Operators · supplemental task | 0.3% | L0 | L0L1 | 10% | 18 min | Physical presence, Accountability, Access to systems |
Level: consensus of the two models (the lower level when they disagree). Share: part of the task’s working time an agent could take over. Human time: minutes a competent person needs for one instance, as estimated by the models.
Against other measures
Exposure is not delegation
| Measure | Value | Percentile |
|---|---|---|
| ADI (this index) | 1.8% | 4 |
| Eloundou et al. (2024), GPT exposure β | 0.009 | 2 |
| Felten et al. (2021), AI occupational exposure | -1.087 | 17 |
| Webb (2020), AI patent exposure | 82.579 | 77 |
| Eisfeldt et al. (2026), generative AI exposure | 0.011 | 11 |
| Anthropic Economic Index, observed use | 0 | 16 |
Earlier indices measure whether AI can touch a task; ADI measures how much of it an agent can carry out from a goal. – : the source does not cover this occupation.
Same sub-major group (83)
Neighbouring occupations
| Occupation | ADI | % |
|---|---|---|
| Motorcycle drivers 8321 | 39.2 | |
| Railway brake, signal and switch operators 8312 | 23.1 | |
| Heavy truck and lorry drivers 8332 | 21.6 | |
| Bus and tram drivers 8331 | 14.1 | |
| Crane, hoist and related plant operators 8343 | 13.1 | |
| Car, taxi and van drivers 8322 | 12.6 | |
| Mobile farm and forestry plant operators 8341 | 11.8 | |
| Locomotive engine drivers 8311 | 9.8 | |
| Ships’ deck crews and related workers 8350 | 5.7 | |
| Lifting truck operators 8344 | 4.2 |
Dashed line: earthmoving and related plant operators (1.8%).
Cite this record
Text
Espinal Maya, Cristian, and Santiago Jiménez Londoño. 2026. ADI v2026.1: Agent Delegability Index data, code and MCP server. Zenodo. https://doi.org/10.5281/zenodo.23552918. Record: Earthmoving and related plant operators (ISCO-08 8342), https://balamlabs.org/adi/occupations/8342
BibTeX
@misc{espinal2026adidata,
title = {{ADI} v2026.1: Agent Delegability Index data, code and {MCP} server},
author = {Espinal Maya, Cristian and Jim{\'e}nez Londo{\~n}o, Santiago},
year = {2026},
publisher = {Zenodo},
version = {v2026.1},
doi = {10.5281/zenodo.23552918},
url = {https://doi.org/10.5281/zenodo.23552918},
note = {Record: Earthmoving and related plant operators (ISCO-08 8342)}
}Machine-readable
The same record as static JSON, with its citation: /adi/v2026.1/isco/8342.json.