Terrazzo Workers and Finishers
Apply a mixture of cement, sand, pigment, or marble chips to floors, stairways, and cabinet fixtures to fashion durable and decorative surfaces.
1,180 people do this job in the US. $76,170 a year.
of the working time. Estimate.
- 3%
- 0%
- 97%
Measured, from Anthropic's usage data (2025). Counts help on part of a task.
On the chosen pace and reliability. Estimate.
Share of the working time within reach, now to 2030
What each choice means: , , , , . Every pace starts from .
At this date and pace, models finish tasks up to 4.4 h long four times in five.
How far this has come
With GPT-4, measured in March 2023, 0% of this job's working time was within reach at . With Claude 3.7 Sonnet, measured in February 2025, 0%. With Claude Mythos Preview (early), measured in April 2026, 3%. Today's estimate: 3%.
A backcast: today's task data with the best model METR had measured by each date. It shows how fast the models have moved, not what anyone forecast at the time.
The tasks
Sorted by . 26 tasks from .
| Task | Kind | |||
|---|---|---|---|---|
| Grind surfaces with a power grinder, or polish surfaces with polishing or surfacing machines.Done daily by most who do it. | 24% | 1.7 h38 min to 5 h | Stays with people | |
| Spread, level, or smooth concrete or terrazzo mixtures to form bases or finished surfaces, using rakes, shovels, hand or power trowels, hand or power screeds, or floats.Done daily by most who do it. | 10% | 1.7 h25 min to 3.3 h | Stays with people | |
| Grind curved surfaces or areas inaccessible to surfacing machine, such as stairways or cabinet tops, with portable hand grinder.Done daily by most who do it. | 9% | 1.3 h25 min to 2.5 h | Stays with people | |
| Cut metal division strips and press them into the terrazzo base for joints or changes of color to form designs or patterns or to help prevent cracks.Done more than weekly by most who do it. | 8% | 50 min25 min to 2.5 h | Stays with people | |
| Clean installation site, mixing and storage areas, tools, machines, and equipment, and store materials and equipment.Done daily by most who do it. | 6% | 50 min17 min to 1.7 h | Stays with people | |
| Blend marble chip mixtures, place into panels, and push a roller over the surface to embed the chips.Done daily by most who do it. | 5% | 50 min25 min to 1.7 h | Stays with people | |
| Measure designated amounts of ingredients for terrazzo or grout, according to standard formulas and specifications, using graduated containers and scales, and load ingredients into portable mixer.Done several times a day by most who do it. | 5% | 17 min8 min to 33 min | Stays with people | |
| Wash polished terrazzo surface, using cleaner and water, and apply sealer and curing agent according to manufacturer's specifications, using brush or sprayer.Done daily by most who do it. | 4% | 50 min17 min to 1.7 h | Stays with people | |
| Modify mixing, grouting, grinding, or cleaning procedures, according to type of installation or material used.Done daily by most who do it. | 3% | 25 min13 min to 50 min | 100%Half by now | |
| Mold expansion joints and edges, using edging tools, jointers, or straightedges.Done daily by most who do it. | 3% | 38 min17 min to 1.3 h | Stays with people | |
| Move terrazzo installation materials, tools, machines, or work devices to work areas, manually or using wheelbarrow.Done daily by most who do it. | 3% | 25 min13 min to 50 min | Stays with people | |
| Chip, scrape, or grind high spots, ridges, or rough projections to finish concrete, using pneumatic chisel, hand chisel, or other hand tools.Done more than monthly by most who do it. | 3% | 50 min17 min to 1.7 h | Stays with people |
Within reach, per task: the share of the task's time whose instances are short enough for a model to finish at the chosen date, pace and reliability. Half by: the date half of that time comes within reach.
Jobs that share skills with this one
From O*NET's related occupations. Within reach now and by the end of 2028, long-run pace, four in five.
- Tile and Stone Setters4% now, 4% by 2028
- Helpers--Brickmasons, Blockmasons, Stonemasons, and Tile and Marble Setters6% now, 6% by 2028
- Floor Layers, Except Carpet, Wood, and Hard Tiles3% now, 3% by 2028
- Cement Masons and Concrete Finishers0% now, 0% by 2028
- Stonemasons0% now, 0% by 2028
- Brickmasons and Blockmasons12% now, 13% by 2028
Where this job works
The industry groups that employ the most of it (BLS, May 2025).