Real-Time Labour Job Costing for Builders

Real-time labour job costing turns site hours into current project costs as work happens. Builders can see ordinary time, overtime, allowances, super and other on-costs by job, stage and cost code before payroll is finalised.

What real-time labour costing actually means

Real-time does not have to mean every dollar changes the second someone taps a phone. On a building site, a better definition is that time moves into job reports as soon as it is submitted, checked and interpreted against the worker's pay rules.

Say a carpenter records 6:30am-3:00pm against the framing cost code. The system should separate ordinary hours, overtime and unpaid breaks. It should then add applicable allowances and employment on-costs.

The project manager sees the cost that day, or after supervisor approval. They do not need to wait until the pay run is complete next week.

That matters when a crew is burning more hours than estimated, a variation has started without a signed price, or workers have booked time to the wrong stage.

For a broader look at setting up codes, budgets and payroll data, see the job costing guide.

What belongs in the labour cost

A timesheet multiplied by a base hourly rate is not the full labour cost. It is only the starting point.

A useful live cost can include:

• Ordinary wages.
• Overtime and penalty rates.
• Site, travel, fares, tool or leading hand allowances where applicable.
• Casual loading.
• Superannuation on ordinary time earnings.
• Leave costs for permanent employees.
• Workers compensation premiums.
• Payroll tax where the employer is liable.
• Training levies or portable long service leave costs where relevant.
• An internal labour overhead for supervision, payroll or site administration.

Keep direct labour separate from overhead. A carpenter's hours on wall framing belong against that project and stage. The payroll officer's wages will usually sit in business overhead, unless there is a sound reason to allocate them to a project.

Current figures your costing rules should recognise

As at August 2026, the compulsory super guarantee rate is 12% of ordinary time earnings for eligible employees. Overtime payments are generally outside ordinary time earnings when the overtime hours are clearly identified. Some allowances are included, depending on what the allowance pays for.

As at August 2026, the Building and Construction General On-site Award commonly applies overtime at 150% for the first 2 hours and 200% after that for weekday overtime. Sunday overtime is generally 200%, while public holiday work is generally 250%. The employee's classification, employment type, award clause and any enterprise agreement can change the result.

As at August 2026, employers must generally keep employee time and wage records for 7 years under the Fair Work record-keeping rules. Your job cost report is not a substitute for the payroll record, but both should trace back to the same approved time entry.

Award wage tables can change following the annual wage review, often from the first full pay period on or after 1 July. Do not hard-code an old dollar rate into a project template. Record the effective date of each pay table and preserve the rate used for each historical shift.

A simple worked example

Suppose a permanent carpenter has an ordinary rate of $38.00 an hour. The worker records 8 ordinary hours, followed by 2 hours of weekday overtime. A $2.50 hourly site allowance applies and, for this example, it forms part of ordinary time earnings.

Cost component	Calculation	Job cost
Ordinary wages	8 × $38.00	$304.00
Overtime	2 × $38.00 × 150%	$114.00
Site allowance	8 × $2.50	$20.00
Super	12% × $324.00 eligible earnings	$38.88
Direct labour cost so far	Wages, allowance and super	$476.88

This is an example, not an award rate quote. Workers compensation, payroll tax, leave accrual and internal overhead may still need to be added. The allowance treatment must also match the applicable award, agreement and super rules.

The useful bit is not the final total by itself. It is seeing that $114 of the day's cost came from overtime. The site manager can then ask whether the overtime was planned, approved and included in the project budget.

Real-time costing compared with weekly updates

Area	Weekly batch costing	Real-time costing
Cost visibility	After payroll or spreadsheet entry	After time submission and approval
Overtime	Often discovered late	Flagged when the shift is interpreted
Cost code errors	Carried until someone reviews the report	Returned to the worker or supervisor quickly
Variations	Hours may blend into contract work	Separate variation codes can be used immediately
Forecasting	Based on older actuals	Uses current approved and pending hours
Payroll changes	May not flow back to the job report	Adjustments can update both payroll and project cost

A live report should distinguish approved costs from pending costs. Otherwise, a worker correcting the same timesheet twice can make the project total jump around without explanation.

Set up cost codes that people can actually use

Too few codes hide where the money went. Too many codes make site staff guess.

Start with the level at which someone can act. On a residential build, that could be site establishment, slab, framing, cladding, fit-out, defects and variations. A larger commercial project may need area, level, trade package and activity.

Use short names that make sense on a phone. Archive codes once the stage is closed. Do not ask workers to scroll through every project the business has ever run.

Every time entry should contain at least:

1. The worker.
2. The date and start and finish times.
3. The job.
4. The cost code or work stage.
5. A break record.
6. Notes or a variation reference where needed.
7. An approval status.

Location capture can help confirm the correct site, but it should not replace a proper time record. Tell workers what location data is collected, when it is collected and why.

Connect payroll rules before relying on the report

The hardest part is not collecting hours. It is interpreting them correctly.

A worker may be covered by an award, an enterprise agreement or an individual arrangement. Their rules can include rostered days off, daily overtime, weekly overtime, minimum engagement periods, meal allowances and higher duties.

Those rules need to run before the labour cost reaches the project report. Otherwise, the report may value all hours at ordinary time and understate the job until payroll catches up.

Rate changes also need effective dates. If a pay increase starts halfway through a project, old shifts must keep the old rate and new shifts must use the new one.

When building a quote, compare the fully loaded hourly cost with the charge-out rate. The labour pricing calculator can help test rates, on-costs and margin before work starts.

Controls that keep the numbers useful

Give supervisors a short daily approval list. They should check the site, cost code, hours, breaks, overtime reason and variation reference. Payroll should deal with pay interpretation and unusual clauses.

Do not let every user edit approved time without a record. Corrections should show who changed the entry, when it changed and why. If payroll adjusts an employee's hours, the same correction should flow back to the project cost.

Finally, compare three figures for each cost code: budget, committed labour and actual approved labour. Pending time can sit beside them as a warning. That gives the builder an early view without pretending unapproved entries are final.

Real-time job costing works when site time, payroll rules and project codes agree. Get those three parts right, and the report becomes something a project manager can use today, not a history lesson after the margin has gone.