Cement Masons and Concrete Finishers

Construction and Extraction Occupations
O*NET-SOC code
47-2051.00

Smooth and finish surfaces of poured concrete, such as floors, walks, sidewalks, roads, or curbs using a variety of hand and power tools. Align forms for sidewalks, curbs, or gutters; patch voids; and use saws to cut expansion joints.

  • Data source: BLSPublished: 2026-08

    Low· relative

    LowFour relative bandsVery high

    Group-level value

    Scale, basis and source

    Four relative bands (Low / Moderate / High / Very high)

    831 detailed occupations in the BLS Employment Projections table. Assigned per National Employment Matrix (NEM) code, so occupations sharing a NEM code carry the same band

    Source dataset (XLSX download)

  • Data source: AnthropicPublished: 2026-03

    0.000

    0.000Range of values carried here0.745
    Scale, basis and source

    Observed exposure index, 0–1 as published

    Mapped onto O*NET tasks

    Published per SOC 2018 occupation; every O*NET occupation with the same SOC 2018 code carries this value

    Source dataset (CSV download)

  • Data source: ILOPublished: 2025

    0.10

    0.09Range of values carried here0.70

    Group-level value

    Scale, basis and source

    Generative AI exposure index, 0–1 as published

    Published per ISCO-08 unit group. Linked to this occupation, wholly or in part, by applying U.S. Bureau of Labor Statistics crosswalks (ISCO-08 to 2010 SOC, 2010 SOC to 2018 SOC) as published

    Source dataset (PDF download)

What kind of figure this source publishes

The BLS category is a relative rank, not an absolute level, and it is not a first-hand measurement: it groups an occupation's percentile ranks across several published studies into four bands. It is not an employment or wage forecast, not a probability of adoption, and it does not separate automation from augmentation.

Task-level exposure

Exposed tasks only

26 rated tasks · 0 tasks with β ≥ 0.5 (0.0%)

β = direct exposure (E1) + 0.5 × exposure when tools are available (E2), per the source repository's definition.

  • Source unit: O*NET 27.2 tasks → O*NET 31.0 occupation code
  • All rated tasks are in the O*NET 31.0 task list.
Source
OpenAI "GPTs are GPTs" exposure rubric
Release
gh-main-0471612
License
MIT License, Copyright (c) 2024 OpenAI
Task (O*NET 20.1)Claude.aiRaw / share %
Monitor how the wind, heat, or cold affect the curing of the concrete throughout the entire process.

47-2051.00

0.0280100.0
Not observed on any surface — 25 task(s) — These tasks have no row in the source for this release. The 0 in the share row is a display-stage composition ratio; absence is what the — in the raw row states.
Check the forms that hold the concrete to see that they are properly constructed.
—0
Set the forms that hold concrete to the desired pitch and depth, and align them.
—0
Spread, level, and smooth concrete, using rake, shovel, hand or power trowel, hand or power screed, and float.
—0
Mold expansion joints and edges, using edging tools, jointers, and straightedge.
—0
Signal truck driver to position truck to facilitate pouring concrete, and move chute to direct concrete on forms.
—0
Produce rough concrete surface, using broom.
—0
Operate power vibrator to compact concrete.
—0
Direct the casting of the concrete and supervise laborers who use shovels or special tools to spread it.
—0
Cut out damaged areas, drill holes for reinforcing rods, and position reinforcing rods to repair concrete, using power saw and drill.
—0
Wet concrete surface, and rub with stone to smooth surface and obtain specified finish.
—0
Wet surface to prepare for bonding, fill holes and cracks with grout or slurry, and smooth, using trowel.
—0
Clean chipped area, using wire brush, and feel and observe surface to determine if it is rough or uneven.
—0
Apply hardening and sealing compounds to cure surface of concrete, and waterproof or restore surface.
—0
Chip, scrape, and grind high spots, ridges, and rough projections to finish concrete, using pneumatic chisels, power grinders, or hand tools.
—0
Build wooden molds, and clamp molds around area to be repaired, using hand tools.
—0
Fabricate concrete beams, columns, and panels.
—0
Waterproof or restore concrete surfaces, using appropriate compounds.
—0
Install anchor bolts, steel plates, door sills and other fixtures in freshly poured concrete or pattern or stamp the surface to provide a decorative finish.
—0
Mix cement, sand, and water to produce concrete, grout, or slurry, using hoe, trowel, tamper, scraper, or concrete-mixing machine.
—0
Spread roofing paper on surface of foundation, and spread concrete onto roofing paper with trowel to form terrazzo base.
—0
Sprinkle colored marble or stone chips, powdered steel, or coloring powder over surface to produce prescribed finish.
—0
Cut metal division strips, and press them into terrazzo base so that top edges form desired design or pattern.
—0
Apply muriatic acid to clean surface, and rinse with water.
—0
Push roller over surface to embed chips in surface.
—0
Polish surface, using polishing or surfacing machine.
—0

Data sources & licenses — O*NET®, Anthropic Economic Index, Eloundou et al. (2023): see full notices on the Credits page

All O*NET 31.0 task statements (26)

All O*NET 31.0 task statements for this occupation (English, as published; task type core or supplemental). Exposure values are not listed here; they are in the table above, next to each task statement as worded in the O*NET version each source used.

Task (O*NET 31.0)Type
Check the forms that hold the concrete to see that they are properly constructed.Core
Set the forms that hold concrete to the desired pitch and depth, and align them.Core
Spread, level, and smooth concrete, using rake, shovel, hand or power trowel, hand or power screed, and float.Core
Mold expansion joints and edges, using edging tools, jointers, and straightedge.Core
Monitor how the wind, heat, or cold affect the curing of the concrete throughout the entire process.Core
Signal truck driver to position truck to facilitate pouring concrete, and move chute to direct concrete on forms.Core
Produce rough concrete surface, using broom.Core
Operate power vibrator to compact concrete.Core
Direct the casting of the concrete and supervise laborers who use shovels or special tools to spread it.Core
Mix cement, sand, and water to produce concrete, grout, or slurry, using hoe, trowel, tamper, scraper, or concrete-mixing machine.Core
Cut out damaged areas, drill holes for reinforcing rods, and position reinforcing rods to repair concrete, using power saw and drill.Core
Wet concrete surface, and rub with stone to smooth surface and obtain specified finish.Core
Wet surface to prepare for bonding, fill holes and cracks with grout or slurry, and smooth, using trowel.Core
Clean chipped area, using wire brush, and feel and observe surface to determine if it is rough or uneven.Core
Apply hardening and sealing compounds to cure surface of concrete, and waterproof or restore surface.Core
Chip, scrape, and grind high spots, ridges, and rough projections to finish concrete, using pneumatic chisels, power grinders, or hand tools.Core
Build wooden molds, and clamp molds around area to be repaired, using hand tools.Core
Waterproof or restore concrete surfaces, using appropriate compounds.Core
Install anchor bolts, steel plates, door sills and other fixtures in freshly poured concrete or pattern or stamp the surface to provide a decorative finish.Core
Spread roofing paper on surface of foundation, and spread concrete onto roofing paper with trowel to form terrazzo base.Supplemental
Sprinkle colored marble or stone chips, powdered steel, or coloring powder over surface to produce prescribed finish.Supplemental
Cut metal division strips, and press them into terrazzo base so that top edges form desired design or pattern.Supplemental
Fabricate concrete beams, columns, and panels.Supplemental
Apply muriatic acid to clean surface, and rinse with water.Supplemental
Push roller over surface to embed chips in surface.Supplemental
Polish surface, using polishing or surfacing machine.Supplemental

Occupation information

Employment outlook (BLS)

Employment, 2025
205K
Projected employment, 2035
208K
Change (2025–35)
+1.6%
Median annual wage, 2025
$57,020
Typical education needed for entry
No formal educational credential
lowest $30,890median wage across 825 detailed occupations, BLS EP 2025–35highest $559,030

Source: U.S. Bureau of Labor Statistics, Employment Projections 2025–35 — Employment by detailed occupation, 2025 and projected 2035

Korea classification links (KSCO)

Links from the current release of the Korea Occupation Direct Crosswalk v1.1, made by AI Changing Work. Relation values are read from the O*NET-SOC occupation side.

KSCO codeKSCO titleRelationStatus
78223콘크리트 타설원Same scopeconfirmed

Relation and status definitions(kr-direct v1.1)

ILO occupational description

AI Changing Work links the ISCO-08 unit groups below to this occupation by applying the U.S. Bureau of Labor Statistics crosswalks (2018 SOC to 2010 SOC, 2010 SOC to ISCO-08) as published, without case-by-case selection; each link may be whole or partial.

  • ISCO-08 7114Concrete Placers, Concrete Finishers and Related Workers

The definition, tasks and examples below are the ILO's description of that unit group, not of this occupation.

Concrete placers, concrete finishers and related workers erect reinforced concrete frameworks and structures, make forms for moulding concrete, reinforce concrete surfaces, cement openings in walls or casings for wells, finish and repair cement surfaces and carry out terrazzo work.

Tasks

  • (a) constructing and repairing reinforced concrete floors, walls, tanks, silos and other concrete structures;
  • (b) making shuttering or assembling prefabricated forms for moulding concrete;
  • (c) cementing openings in walls or casings for wells;
  • (d) finishing and smoothing surfaces of concrete structures;
  • (e) applying a durable, smooth surfacing composed of cement, sand pigment and marble particles to floors, known as a terrazzo finish;

Example occupations

Cement finisher · Concrete placer · Terrazzo worker

Sources: ILO ISCO-08 — details: Credits

ESCO occupational vocabulary

Each entry below is matched to this occupation in the published ESCO-O*NET Crosswalk (version 1, 2022). The match types are that crosswalk's; the wording is AI Changing Work's.

  • concrete finisherESCO 7114.1Same scope

    Concrete finishers work with binding agents like cement and concrete. They put up any removable forms and pour concrete into the forms. They then execute one or several actions to finish the concrete: cutting, screeding or levelling, compacting, smoothing, and chamfering to prevent chipping.

Source: European Commission, DG EMPL — ESCO API 2026-08-08 (bridge v1.2.1)

License: CC BY 4.0 (EU Reuse Notice)

View original

ESCO reuse terms and the modification notice are in Credits.

France classification links (ROME)

AI Changing Work's links between this occupation and ROME 4.0 job profiles, judged with AI models. Relations are read from this occupation's side. Links marked “provisional” were adopted on the judgments of two judges from the same model family (Claude) alone, or by an operator rule applied to their judgments, so they rest on weaker evidence than confirmed links.

ROME codeROME title (French)Relation
F1703Maçon / MaçonneThis occupation is narrowerprovisional
F1609Poseur / Poseuse de revêtements de solsRelated, not a matchprovisional
F1701Coffreur / CoffreuseRelated, not a matchprovisional

Source: France Travail — Répertoire Opérationnel des Métiers et des Emplois (ROME 4.0), version 61, last updated 15 June 2026 (https://www.data.gouv.fr/datasets/repertoire-operationnel-des-metiers-et-des-emplois-rome). Licence Ouverte 2.0.

ROME codes and titles are reproduced unchanged; the links to O*NET-SOC occupations are AI Changing Work's own judgment and are not a France Travail correspondence.

(AI Changing Work link release: fr-direct v1)

Spain classification links (CNO-11)

AI Changing Work's links between this occupation and CNO-11 occupations, judged with AI models. Relations are read from this occupation's side.

CNO-11 codeCNO-11 title (Spanish)Relation
7111Encofradores y operarios de puesta en obra de hormigónThis occupation is narrowerprovisional

Source: Instituto Nacional de Estadística (INE), National Classification of Occupations 2011 (CNO-11, Royal Decree 1591/2010) — www.ine.es · Licensed CC BY 4.0. CNO-11 codes and Spanish titles are reproduced unchanged; the links to O*NET occupations are AI Changing Work's own judgment and are not an INE correspondence.

(AI Changing Work link release: es-direct v1)

Germany classification links (KldB)

AI Changing Work's links between this occupation and KldB occupations, judged with AI models. Relations are read from this occupation's side.

KldB codeKldB title (German)Relation
32112Berufe im Beton- und Stahlbetonbau - fachlich ausgerichtete TätigkeitenOverlapping, not the same
33122Berufe in der Estrich- und Terrazzoverlegung - fachlich ausgerichtete TätigkeitenOverlapping, not the same
32222Berufe im Straßen- und Asphaltbau - fachlich ausgerichtete TätigkeitenRelated, not a match

Source: © Statistik der Bundesagentur für Arbeit — Klassifikation der Berufe 2010 – überarbeitete Fassung 2020, https://statistik.arbeitsagentur.de. KldB codes and titles are reproduced unchanged; the links to O*NET occupations are AI Changing Work's own mapping (eigene Zuordnung) and are not a Bundesagentur für Arbeit correspondence.

(AI Changing Work link release: de-direct v1)

Japan classification links (JSCO)

AI Changing Work's links between this occupation and JSCO occupations, judged with AI models. Relations are read from this occupation's side.

JSCO codeJSCO title (Japanese)Relation
681土木従事者This occupation is narrowerprovisional
664左官Related, not a matchprovisional

Source: Ministry of Internal Affairs and Communications (MIC), Japan Standard Occupational Classification (Dec. 2009, MIC Notification No. 555). JSCO codes and Japanese titles are reproduced unchanged; the links to O*NET occupations are AI Changing Work's own judgment and are not a MIC correspondence.

(AI Changing Work link release: jp-direct v1)

Sources, licenses and AI Changing Work's modification and translation notices for this page: Credits & sources