How to Estimate Concrete Labor Cost (Crew Hours & Finishing Rates)

Quick answer: concrete placing and finishing labor runs about $3.50 to $7.00 per sq ft for a broom-finished slab, with $5.00 a fair middle figure. By the hour, a 3 to 4-person flatwork crew costs $120 to $280 per crew-hour ($40 to $70 per finisher) and needs about 3.5 crew-hours per 100 sq ft. Stamped finishes and hard-to-reach sites cost more. Labor is often the largest single line on a slab quote.

Concrete labor is hard to price because the work is lumpy: a crew spends hours on forms and setup, then races the clock once the truck arrives. That is why contractors price it two different ways, and why a small pad can cost nearly as much in labor as one twice its size. This guide shows both methods, gives crew-hour figures for common slab sizes, and explains what moves the number up or down.

Two Ways to Price Concrete Labor

1. Per square foot

Most residential flatwork contractors quote labor per square foot of slab, because it is easy to compare and scales with the job. Typical rates:

2. Per crew-hour

Estimators who build a bid from the ground up count hours instead. A crew-hour is one hour of the whole crew working. A typical flatwork crew is 3 to 4 finishers at $40 to $70 per hour each, which makes $120 to $280 per crew-hour depending on crew size, wages and region. Our calculator uses $140.

The two methods land near each other on average jobs. The per-sq-ft method is simpler; the crew-hour method shows you why small jobs and complicated jobs cost more, because hours do not shrink in proportion to the area. Try both in the concrete labor cost calculator.

Crew Hours and Labor Cost by Slab Size

To turn crew-hours into finisher-hours, multiply by the crew size. A 20x20 slab needing 14.0 crew-hours with a 4-person crew is 56 finisher-hours. That matters if you are hiring day labor by the hour instead of a crew by the job.

What Drives Labor Cost Up or Down

• Finish. A broom finish is the fastest. A smooth steel-trowel finish for a garage or shop takes more passes. Stamped concrete needs more people on the slab at once and more hours: 0.060 crew-hours per sq ft against 0.035. The finish materials themselves are a separate line ($0.50 to $0.80 per sq ft for broom, $6.00 to $12.00 for stamped).
• Access. If the truck can back up and the chute reaches the forms (about 15 to 20 ft), the crew just guides concrete into place. A backyard behind a fence means wheelbarrows or a pump. Wheelbarrowing burns crew-hours; a pump adds $600 to $1,200 but saves labor.
• Pump time. Line pumps bill $100 to $175 per hour with a 2 to 4-hour minimum, and boom pumps $150 to $350 per hour. A slow crew makes the pump cost more too.
• Size and shape. Setup, form work and cleanup are nearly fixed, so small slabs cost more per foot. Curves, steps, many corners and blockouts for posts all add hours.
• Site prep. Excavation runs about $1.00 to $2.50 per sq ft and is usually a separate line. Breaking out an old slab is another $3 to $4 per sq ft.
• Weather. Below about 40°F, blankets and heat add labor and slow finishing. Above about 85°F, the crew needs more hands to finish before the surface sets. See the best time of year to pour.
• Region and season. Labor rates vary more by location than material prices do. Busy spring and summer schedules push prices up.

Worked Example: a 24x24 Garage Floor

On a 5-inch 24x24 slab with our calculator's full default scope, labor is $2,880 of a $6,031 direct cost, about 48%. If the same slab were behind the house and needed wheelbarrows, the difficult rate (0.050 crew-hours per sq ft) would put labor near $4,032, and that is before any pump charge. Run your own slab in the slab cost calculator to see labor next to materials.

How Labor Shows Up on a Quote

Contractors present labor in different ways, which makes quotes hard to compare:

• One lump sum for the whole job. Ask for at least labor and materials split out.
• Per sq ft, all-in. A single installed price per sq ft that includes concrete, labor and everything else. Ask what is in it: base, steel, vapor barrier, finish, cleanup.
• Line items. Forms, placing and finishing, excavation, base, reinforcement, pump, each priced separately. This is the easiest to check.

Every quote also carries overhead and profit (insurance, trucks, tools, the office, the owner's pay), which our benchmarks put at up to about 25% on top of direct costs. A quote that looks high on labor may simply be carrying that markup on the labor line. Paste the numbers into the concrete quote checker to see if they are in a fair range.

DIY: What You Save and What It Costs You

Doing it yourself saves the labor line, but not the hours. The crew-hour figures above assume skilled finishers; first-timers are slower and get only one chance before the concrete sets. A middle path many homeowners use is to do the excavation, base and forms themselves and hire a crew just for the pour and finish, which is the part that needs speed and skill. The DIY vs. contractor guide covers where that line sits.

Sources and Method

Labor rates and production rates (crew-hours per sq ft) are this site's working benchmarks for residential flatwork, built from typical crew sizes and regional wage ranges; they are the same figures our labor calculator and slab calculator use. See our methodology. Finishing and curing practice follows ACI 302.1R and ACI 308R; weather thresholds follow ACI 305R and ACI 306R. Actual rates vary widely by region, season and crew.