Estimating

What is crew mix in construction?

Crew mix is the combination of worker classifications on a crew (foreman, journeymen, apprentices, laborers) and it drives both how fast the crew works and what an hour of crew time costs.

A foreperson with a clipboard briefs four workers wearing hardhats, safety glasses and high visibility vests.
A focused crew briefing connects the day’s work with its hazards and controls. AI-generated illustration.

Crew mix describes who is on a crew and in what proportion. A typical electrical crew might be one foreman, three journeymen, and two apprentices. Estimators use crew mix to turn hours into dollars, because each classification has a different wage and burden. Superintendents use it to plan who goes where. Get the mix wrong and either the labor estimate is off or the crew cannot hit the production rate the estimate assumed.

How crew mix sets the blended rate

Most estimates price labor with a blended (or composite) crew rate: the weighted average cost per hour of everyone on the crew. Here is a made-up example for a six-person crew, using fully burdened rates the company has already calculated from its own payroll, taxes, insurance, and benefits.

Example blended crew rate (illustrative burdened rates)
ClassificationWorkersBurdened rateCost per crew hour
Foreman1$78$78
Journeyman3$66$198
Apprentice2$38$76
Crew total6$352

The blended rate is $352 divided by 6, or about $58.67 per worker hour. If the takeoff calls for 900 worker hours of conduit and wire, the labor cost is roughly $52,800. Change the mix to two journeymen and three apprentices and the blended rate drops to $54.00, saving about $4,200 on paper. Whether that saving is real depends on whether the lighter crew can still install at the same production rate.

Crew mix and production rates

Production rates and crew mix belong together. If your historical data says a crew of one foreman and four journeymen hangs 1,400 square feet of board a day, that number only holds for that mix. Store the mix alongside every production rate in your estimating database, and when the field changes the crew, note it in the daily report so the next estimate learns from it.

Prevailing wage and apprentice rules

On public work, crew mix is not only a business choice. Apprentices can usually be paid apprentice rates only if they are registered in an approved program and the job respects the allowed apprentice ratio. Workers must be paid for the classification of work they actually perform, which affects certified payroll. Check the wage determination and your state's prevailing wage page before you price a lighter crew on a public bid.

Common mistakes

  1. Estimating with one mix and staffing the job with another, then wondering why labor ran over.
  2. Leaving the foreman out of the crew rate, or counting a working foreman as non-productive time twice.
  3. Using an apprentice-heavy mix on a job with tight lead times or complex work, where production falls off.
  4. Applying a private-work mix to a prevailing wage job without checking ratio rules.
  5. Never updating the mix from actual payroll data, so estimates drift from reality.

Related terms

See labor rate, labor burden, labor productivity, and burden rate. The guides how to estimate labor hours for construction and how to schedule crews across multiple jobs put crew mix to work.

Frequently asked questions

What is a blended crew rate?

It is the weighted average hourly cost of all workers on a crew, based on the crew mix and each classification's burdened rate. Estimators multiply it by labor hours to price labor.

Does a cheaper crew mix always save money?

No. A crew with fewer experienced workers may install less per hour. The real measure is cost per unit installed, not cost per hour.

How does crew mix affect prevailing wage jobs?

Apprentice rates generally apply only to registered apprentices within allowed ratios, and each worker must be paid for the classification of work performed. Check the wage determination and state rules.

Who decides the crew mix?

The estimator assumes one in the bid, and the superintendent or foreman staffs the job. The two should agree before the job starts.

Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

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