Bookkeeper Key Person Risk in Construction Payroll

Bookkeeper key person risk exists when one person holds the knowledge, access and judgement needed to run construction payroll. Reduce it with documented rules, shared system access, trained cover, approval checks and a tested pay-run handover.

Why construction payroll is exposed

Construction payroll is rarely just hours multiplied by a rate. A pay run may include overtime, RDO accruals, travel, fares, site allowances, meal allowances, casual loading, apprentices, annualised arrangements and different super treatments.

The correct calculation can depend on an award, enterprise agreement, employment contract or site arrangement. Time may come from paper sheets, an app, a supervisor’s message or a corrected docket received after cut-off.

Your bookkeeper often learns how these pieces fit together. The trouble starts when that knowledge stays in their head.

If they are sick, resign or take leave, someone else may have access to the payroll system but still not know why an employee receives a particular allowance. That is access without payroll knowledge, and it is not proper cover.

You can find more practical controls in the payroll operations hub.

Know the fixed obligations

A useful handover starts with the legal settings that cannot be guessed. For example:

• The super guarantee rate is 12% of ordinary time earnings as at September 2026.
• Fair Work employee records must generally be kept for 7 years as at September 2026.
• An STP finalisation declaration is generally due by 14 July as at September 2026.
• The National Employment Standards set 38 hours per week, plus reasonable additional hours, as the standard maximum for a full-time employee as at September 2026.

Those figures are only the starting point. An award or enterprise agreement may set ordinary-hour patterns, overtime triggers, RDO rules and allowances. Super may apply to some payments but not others.

Do not hard-code changing rates into a handover document without recording the source and review date. Link to the applicable award, agreement, ATO guidance and employee contract. Use the construction payroll compliance audit to check whether the documented process matches what happens in the pay run.

Map where one person holds the answer

Sit beside the bookkeeper and follow one complete cycle, from timesheet collection to bank release. Do not ask only how to press the buttons. Ask why each decision is made.

Payroll area	Key person risk	Practical control
Timesheets	One person knows which supervisors submit late or use another format	Keep a site register showing approvers, cut-off times and escalation contacts
Award or agreement rules	Allowances and overtime are based on memory	Maintain a rule register with clause references and worked examples
Employee changes	Verbal rate changes are entered without independent evidence	Require written approval and retain it with the change record
Pay-run adjustments	Manual entries have unclear descriptions	Use adjustment categories, notes and supporting documents
STP and super	Lodgments depend on one login or one person’s calendar	Give trained cover appropriate access and maintain a compliance calendar
Bank payments	The preparer can also release the payment	Use separate preparation and approval roles where practical

This map usually exposes two different problems. The first is knowledge held by one person. The second is control held by one person. Both need attention.

Run a real handover test

A procedure is not tested because another person has read it. The cover person needs to run a draft payroll.

Choose a normal pay period and give the cover person the approved timesheets, payroll calendar and written instructions. Ask them to prepare the draft without the regular bookkeeper stepping in.

Compare the result with the bookkeeper’s draft. Check gross pay, allowances, overtime, leave, super, deductions and net pay. Investigate every difference. A mismatch may reveal a missing instruction, an undocumented exception or a habit that should never have become part of payroll.

Repeat the test after fixing the documents. Keep evidence of who prepared, checked and approved it.

Build a usable payroll runbook

The runbook should be short enough to use during a busy pay day, but detailed enough for a competent payroll person to follow. Include:

1. Pay periods, cut-off times and expected payment dates.
2. Site names, supervisors and timesheet approval responsibilities.
3. Awards, enterprise agreements and classifications that apply.
4. Ordinary hours, overtime triggers, RDO rules and common allowances.
5. Current pay-rate approval records and where they are stored.
6. Steps for payroll preparation, review, STP reporting, payment and super.
7. Handling of late timesheets, overpayments and off-cycle payments.
8. Contact details for the payroll software provider, accountant and internal approvers.

Do not put passwords, tax file numbers or bank details in the runbook. Store sensitive information in systems with restricted access.

Add screenshots only where they help. Screens change. The important part is the decision rule, such as when travel time is paid or who can approve a rate change.

Fix access before an absence

Use individual accounts rather than shared logins. Turn on multi-factor authentication. Have at least two authorised administrators for critical payroll systems, without giving every user full access.

Check access to the payroll platform, timesheet system, STP connection, super clearing house, banking portal and employee files. A backup person who cannot reach one of these systems may still be unable to finish the pay run.

Keep preparation and approval separate where the size of the business allows it. One person can prepare the payroll or bank file, while another checks totals and authorises payment. In a small contractor, that second person may be the owner or finance manager.

Prepare for an unplanned absence

Write down what happens if the bookkeeper is unavailable on payroll day. Nominate the person who decides whether to delay a cut-off, process an off-cycle payment or seek outside payroll help.

The backup person should first secure approved time records and the prior pay-run reports. They should check employee changes, prepare the payroll, compare totals with previous periods and document unusual movements. A large change is not automatically wrong, but it needs an explanation.

Do not copy the last pay run and hope for the best. New starters, terminations, leave and changed site conditions can make that approach expensive.

Watch for early warning signs

You have material key person risk if only one person can explain payroll calculations, nobody reviews master-file changes, leave is avoided around pay day, shared passwords are common, or procedures have not been tested recently.

Another warning sign is a payroll file full of unexplained manual overrides. Manual entries can be valid, but each one should show what happened, who approved it and which rule supports it.

The aim is not to remove judgement from construction payroll. It is to make that judgement visible, reviewable and transferable. When another trained person can run the payroll correctly, explain the figures and produce the supporting records, the business is no longer relying on one bookkeeper’s memory.