Labour pricing: crews, productivity and labour burden

Labour is the most variable cost in construction. Material prices can be locked in with a quote, and equipment rates are published, but how many hours a crew needs to place a wall or hang a ceiling depends on the crew, the design, the site, the weather and the management. A self-performing contractor's profit often depends more on labour pricing than on anything else. This lesson shows how estimators price labour: the loaded hourly cost of each worker, the crew, the productivity rate, and the adjustments that turn historical productivity into a price for this job.

The labour pricing equation

Labour cost for any item is the quantity of work multiplied by the hours needed per unit, multiplied by the cost of an hour. Estimators express the middle term in one of two equivalent ways.

The first form, labour-hours per unit, also called the unit labour rate or productivity factor, is convenient for single trades and is how most historical data is stored. The second, crew output, is convenient when a mixed crew works together, such as a forming crew of carpenters and labourers with a foreman. Both give the same answer when the data agree, and estimators convert between them freely.

From base wage to loaded rate

The wage on a worker's pay stub is only part of what an hour costs the contractor. The loaded or burdened rate adds every cost that follows from employing that worker for an hour. Estimators build it up in layers.

• Base wage: the hourly rate from the collective agreement, the firm's pay scale or the applicable wage schedule.
• Vacation and statutory holiday pay: in construction often paid as a percentage added to each hour rather than as paid time off.
• Statutory payroll costs: employer contributions required by law, such as pension plan, employment or unemployment insurance and workers' compensation premiums.
• Benefits and fringes: health and welfare, pension, training and other contributions required by collective agreements or company policy.
• Other costs some firms include: small tools, safety equipment, travel and living allowances, and overtime premium where overtime is planned.

In Canada, the employer's statutory costs in 2026 include Canada Pension Plan contributions of 5.95 % of pensionable earnings up to the yearly maximum of $74,600, plus 4 % on earnings between $74,600 and $85,000 under the second additional contribution (CPP2), or Quebec Pension Plan contributions in Quebec; Employment Insurance premiums at 1.4 times the employee rate, about 2.28 % of insurable earnings up to $68,900; and provincial workers' compensation premiums, which are set by each board for each industry classification and can range from under 2 % to over 10 % of payroll in construction. Vacation pay is at least 4 % in most provinces, rising with service, and many collective agreements combine vacation and holiday pay into a single percentage. Some provinces also levy employer health taxes on payroll above a threshold.

Because some statutory contributions stop once a worker's annual earnings reach the yearly maximum, the burden on an hour worked in November can be lower than on an hour worked in March. Estimators usually use an average annual burden percentage calculated by the firm's payroll department, rather than recalculating each contribution, and update it every year when rates change.

Wage rules on public work

Wage rates on public construction can be set by law or policy. Under the former federal Fair Wages and Hours of Labour Act, federal contracts required wages from published schedules; the Act was repealed effective 1 January 2014, although the federal Labour Program still describes fair wage schedules for contracts that include a fair wage clause. Several provinces and municipalities have their own fair wage policies for government construction, such as Ontario's Government Fair Wage Policy and municipal fair wage schedules in some cities. In Quebec, construction wages for most work are set by sector collective agreements negotiated under the province's construction labour relations act and enforced by the Commission de la construction du Québec. An estimator bidding public work must read the contract's labour clauses and price the required rates.

Crews and crew rates

Most work is done by crews rather than individuals. A crew is a defined mix of trades and skill levels that works efficiently on a task, such as a forming crew of one foreman, three carpenters and one labourer, or a masonry crew of two masons and one tender. The crew hourly cost is the sum of the loaded rates of its members, plus any equipment that travels with the crew. The crew's output per hour, measured in units of work, comes from historical records.

Crew composition matters. A crew with too few labourers wastes skilled hours carrying material; a crew with too many stands around. Estimators use the crews the firm actually runs, and they price the work with the crew that suits the job: a small crew on a small, cut-up wall and a larger crew with a crane on long, repetitive walls.

Productivity data

Productivity rates come from three sources. The best is the firm's own historical cost data, collected by cost code from completed projects, because it reflects the firm's crews, methods and management. The second is published cost data, which gives national average productivity for many tasks and is useful for unfamiliar work. The third is the judgement of experienced superintendents and foremen, who can estimate how long work will take from first principles, by thinking through each step. Good estimators use all three and compare them.

Historical data must be read with care. Recorded hours include whatever happened on the job: bad weather, design changes, rework and slow deliveries. Before reusing a rate, the estimator asks what conditions produced it and whether this job will be similar. Data recorded under vague cost codes, such as a single code for all concrete labour, cannot be reused for individual items.

Adjusting productivity for the job

No two jobs are identical, so historical productivity is adjusted for the conditions of the new job. Common factors include the following.

• Size and repetition: large quantities of repetitive work go faster per unit than small, cut-up work, because crews learn the task and set-up time is spread over more units.
• Access and height: work at height, in confined spaces or far from the hoist takes longer.
• Weather: cold, heat, rain and short winter days reduce productivity, and winter work may require heating and hoarding.
• Overtime and shift work: extended hours raise output per day but lower output per hour, as fatigue builds over weeks.
• Crew experience and labour market: a tight labour market can mean less experienced workers.
• Site congestion and trade stacking: many trades working in the same area slow each other down.

Productivity factors should be applied once and documented. Stacking several pessimistic factors, each reasonable on its own, can produce an uncompetitive price; ignoring them produces a loss. The estimator's notes should state which factors were applied and why, so the project team understands the labour budget it inherits.