Job costing · AU
Live Labour Costing vs Month-End Surprises
Last updated 8 October 2026
By Project Payroll team
See how live labour costing catches overtime, wrong job codes and budget overruns before they become month-end construction payroll surprises.

Live labour costing shows what each crew and job is costing while work is happening. Supervisors can fix coding, overtime and productivity issues before payroll closes. Month-end reporting finds the same problems after the money is spent.
Why month-end numbers arrive too late
Picture this. You allowed 320 labour hours for a concrete package. The supervisor believes the crew used 300 hours. At month-end, the job report shows 372 hours, plus overtime, allowances and labour burden.
Nobody necessarily did anything wrong. The extra cost may have come from:
- Timesheets submitted several days late.
- Hours charged to a general overhead code.
- Overtime approved verbally but not shown against the job.
- Travel, site or tool allowances added during payroll.
- Super, leave and workers compensation left out of the site budget.
- An employee moving between two jobs without recording the split.
- A subcontractor being treated as labour in one report and a supplier in another.
Month-end accounts can show the final position. They cannot give last Tuesday's hours back.
Live labour costing narrows that gap. It takes approved or submitted time, applies the relevant pay rules and labour burden, then sends the cost to the correct job, phase or cost code.
Live cost and month-end cost are not the same thing
A live figure is an informed working figure. Payroll is still the final authority for what an employee must be paid.
| Area | Live labour view | Month-end view |
|---|---|---|
| Timing | During the shift, daily or after approval | After payroll and accounting close |
| Hours | Submitted or approved time | Final paid time |
| Pay rules | Expected ordinary time, overtime and allowances | Fully processed payroll rules |
| Job coding | Visible while corrections are still practical | Often corrected through journals |
| Labour burden | Estimated using current settings | Reconciled to actual liabilities |
| Main use | Control the job now | Report and reconcile the period |
The trick is not pretending the live number is final. Mark unapproved time clearly. Show what has been estimated. Then replace estimates with actual payroll results without losing the original job coding.
What belongs in a live labour cost
Hourly rate alone is not labour cost. If a carpenter earns $42 an hour, putting $42 against the job will understate the cost.
A useful live cost can include:
- Ordinary wages.
- Overtime and penalty rates.
- Award, enterprise agreement or employment contract allowances.
- Superannuation where it applies.
- Annual leave and personal leave accruals.
- Payroll tax where the employer is liable.
- Workers compensation premiums using the employer's applicable rate.
- Portable long service leave costs where relevant.
- Other on-costs the business consistently assigns to jobs.
Do not use one guessed percentage for every worker. Apprentices, casuals and salaried site staff can have different cost patterns. Some allowances attract super or payroll tax, while genuine expense reimbursements may be treated differently.
For the broader setup, see the job costing guide. You can also check Crew Time pricing when comparing the cost of live job tracking with manual payroll and accounting work.
Three payroll settings that affect the number
The live calculation needs current rules behind it. These are useful checks for Australian construction payroll:
- As at October 2026, the Superannuation Guarantee rate is 12% of ordinary time earnings for eligible employees. It reached 12% on 1 July 2025.
- As at October 2026, the Building and Construction General On-site Award is generally built around an average of 38 ordinary hours per week, subject to its rostering and averaging rules.
- As at October 2026, Fair Work employee records generally need to be kept for 7 years.
- As at October 2026, a pay slip must generally be given within 1 working day of pay day.
Those figures do not replace an award or enterprise agreement check. Classification, location, shift pattern, casual status and the work being performed can change the result. Payroll tax thresholds and rates also differ by state and territory. Workers compensation premiums depend on the scheme, industry classification and employer history.
A simple shift example
Say an employee works eight ordinary hours at $42 an hour and another two hours at an assumed time-and-a-half rate. This is only an example. The actual overtime rule must come from the applicable award, enterprise agreement or contract.
| Cost item | Calculation | Live job cost |
|---|---|---|
| Ordinary wages | 8 x $42 | $336.00 |
| Overtime | 2 x $63 | $126.00 |
| Site allowance | Entered from approved rule | $26.00 |
| Super estimate | 12% x $336 ordinary time earnings | $40.32 |
| Cost before other on-costs | Wages, allowance and super | $528.32 |
The job has already used at least $528.32, before leave accruals, payroll tax, workers compensation and any other applicable cost. A report showing only ten hours at $42 would show $420. That is a gap of $108.32 before the remaining on-costs are added.
That gap, repeated across several workers and several days, is where month-end surprises come from.
Catch the problem while the crew is still on site
A practical daily check does not need to be complicated.
First, require each time entry to have a job and cost code. Use a visible exception queue for missing codes rather than sending the hours straight to overhead.
Second, show supervisors both hours and dollars. Hours may look fine while overtime and allowances push the cost over budget.
Third, compare actual progress with labour used. If 70% of the labour budget is gone but only half the formwork is complete, the issue needs a site conversation now.
Fourth, lock approved periods but keep a controlled correction process. Silent edits make payroll and job reports hard to trust.
Finally, reconcile live cost to payroll every pay cycle. Differences should have a reason, such as a back-paid allowance, corrected classification, leave entry or changed overtime rule.
Keep site estimates and payroll connected
The cleanest process uses the same employee, job, phase and cost code from time capture through payroll and accounting. Re-keying data invites transposed hours, missing allowances and broad journal entries that hide the real cause.
Give supervisors enough detail to manage the work, but do not make them interpret every payroll clause. Payroll should maintain rates and rules. Site staff should confirm who worked, where they worked, what they worked on and whether the recorded hours are right.
Live labour costing will not remove every adjustment. It makes adjustments visible sooner. That means fewer arguments about old timesheets, fewer unexplained journals and a better chance of finishing the job with the labour margin intact.
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Questions
Is live labour cost the same as processed payroll?
No. Live labour cost uses submitted or approved time and current payroll settings to estimate job cost. Processed payroll remains the final record of wages, super and other employee payments. The two should be reconciled each pay cycle.
How often should a construction business update labour costs?
Daily is usually practical for active sites. High-cost or short-duration work may need updates after each approved shift. Weekly reporting can be too slow when a crew is using overtime or charging time to the wrong cost code.
Should overtime be charged to the job that caused it?
Usually, the cost should follow the work that caused it, using a consistent policy. The exact allocation may depend on the contract, award, enterprise agreement and internal costing rules. Do not automatically spread overtime across unrelated jobs.
Does super apply to construction overtime?
Super is generally calculated on ordinary time earnings. Overtime payments for hours outside ordinary hours are generally excluded, but labels alone do not decide the treatment. Check the actual payment and employment arrangement.
What should we do when live cost does not match payroll?
Check hours, approval status, job codes, classifications, overtime, allowances, leave and back pay. Record the reason for the difference, update the job cost with the final payroll result and fix the underlying rule or process if the issue could recur.
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