--- title: How do I reconcile subcontractor certified payroll against jobsite sign-in sheets with AI? | AEC Agents url: https://aecagents.si/use-cases/certified-payroll-vs-sign-in-sheets description: On prevailing wage jobs the weekly certified payrolls from subs and the jobsite sign-in sheets rarely agree on the first pass: a worker is on the sign-in sheet but not on the payroll, the hours differ, the classification doesn't fit the work logged, or fringe was paid as a flat weekly amount so the hourly figure drops when the week runs long. Put both sources in one workbook keyed on worker, date and sub, have Claude or ChatGPT read the payroll PDFs and sign-in sheet photos into rows, and have Copilot in Excel or Gemini in Google Sheets list every mismatch against the rates you typed from the project's own wage determination. Whether a payroll is compliant, and what the sub must correct, stays with your payroll compliance lead and counsel. last_modified: 2026-11-11 source: AEC Agents (free, open workflows; not engineering advice) --- [AI assists](https://aecagents.si/use-cases/certified-payroll-vs-sign-in-sheets#honesty-labels)Workflow guide · not independently tested # How do I reconcile subcontractor certified payroll against jobsite sign-in sheets with AI? On prevailing wage jobs the weekly certified payrolls from subs and the jobsite sign-in sheets rarely agree on the first pass: a worker is on the sign-in sheet but not on the payroll, the hours differ, the classification doesn't fit the work logged, or fringe was paid as a flat weekly amount so the hourly figure drops when the week runs long. Put both sources in one workbook keyed on worker, date and sub, have Claude or ChatGPT read the payroll PDFs and sign-in sheet photos into rows, and have Copilot in Excel or Gemini in Google Sheets list every mismatch against the rates you typed from the project's own wage determination. Whether a payroll is compliant, and what the sub must correct, stays with your payroll compliance lead and counsel. [Construction Accountant](https://aecagents.si/roles/construction-accountant) · Finance & surety · Claude · ChatGPT · Microsoft Excel · Microsoft Copilot · Google Sheets Content updated 11 November 2026 · Tool links listed below; vendor features and pricing change, so confirm with the vendor ## Short answer Use Claude or ChatGPT, then Copilot in Excel or Gemini in Google Sheets: Claude or ChatGPT reads subcontractor certified payroll PDFs and sign-in sheet photos into rows by worker and date; Copilot or Gemini matches them and flags workers missing from payroll, hour differences, classifications not on your typed rate table and fringe below your typed rate per actual hour. On prevailing wage jobs the weekly certified payrolls from subs and the jobsite sign-in sheets rarely agree on the first pass: a worker is on the sign-in sheet but not on the payroll, the hours differ, the classification doesn't fit the work logged, or fringe was paid as a flat weekly amount so the hourly figure drops when the week runs long. Put both sources in one workbook keyed on worker, date and sub, have Claude or ChatGPT read the payroll PDFs and sign-in sheet photos into rows, and have Copilot in Excel or Gemini in Google Sheets list every mismatch against the rates you typed from the project's own wage determination. Whether a payroll is compliant, and what the sub must correct, stays with your payroll compliance lead and counsel. A person still checks: every exception with the sub before the pay application is released, and classification and compliance questions with your payroll compliance lead and counsel. ## AI tie-in **Tool:** Claude or ChatGPT, then Copilot in Excel or Gemini in Google Sheets Claude or ChatGPT reads subcontractor certified payroll PDFs and sign-in sheet photos into rows by worker and date; Copilot or Gemini matches them and flags workers missing from payroll, hour differences, classifications not on your typed rate table and fringe below your typed rate per actual hour. ### Prompt 1 ``` Read these weekly certified payroll pages [upload, personal identifiers masked]. Build a table with one row per worker and classification: sub, week ending, worker ID as shown, classification, daily straight-time and overtime hours, hourly rate, fringe paid and whether fringe is shown per hour or per week. Copy values exactly. Write UNREADABLE instead of guessing. Do not supply wage rates or judge compliance. ``` ### Prompt 2 ``` Here are the headers and a few sample rows of my Payroll, SignIn and Rates tabs [paste]. The Rates tab holds rates I typed from my own wage determination. Write Excel formulas (or a step-by-step Copilot plan) that match payroll to sign-in by sub, worker and date, list workers on site but not on payroll, flag weekly hour differences over Settings!B1 and classifications not on my Rates tab, and compute fringe per actual hour against my rate. Use only my data. ``` **Human check:** Every exception with the sub before the pay application is released, and classification and compliance questions with your payroll compliance lead and counsel. ## The problem Reconcile subcontractor certified payroll against jobsite sign-in sheets with AI. This is a common, time-consuming task for a construction accountant. ## What this workflow does On prevailing wage jobs the weekly certified payrolls from subs and the jobsite sign-in sheets rarely agree on the first pass: a worker is on the sign-in sheet but not on the payroll, the hours differ, the classification doesn't fit the work logged, or fringe was paid as a flat weekly amount so the hourly figure drops when the week runs long. Put both sources in one workbook keyed on worker, date and sub, have Claude or ChatGPT read the payroll PDFs and sign-in sheet photos into rows, and have Copilot in Excel or Gemini in Google Sheets list every mismatch against the rates you typed from the project's own wage determination. Whether a payroll is compliant, and what the sub must correct, stays with your payroll compliance lead and counsel. **How it works:** AI drafts or analyzes. A person operates the tools, checks the work, and takes action. **Your checkpoint:** The workbook only shows where the payroll and the site records disagree. It does not determine the correct classification for the work, interpret the wage determination, or decide compliance. Every flag goes to the sub for an explanation, and compliance decisions stay with your payroll compliance lead, the contracting agency and counsel. ## Before you start - Access to the named tool; confirm license, version and cost with the vendor. - A small, non-confidential sample to try the workflow on first. - A qualified person to review the output before it is used. ### Tools and access - [Claude (Anthropic)](https://www.anthropic.com/claude) - [ChatGPT](https://chatgpt.com/) - [Microsoft Excel](https://www.microsoft.com/microsoft-365/excel) - [Microsoft Copilot](https://www.microsoft.com/microsoft-365/copilot) - [Google Sheets](https://workspace.google.com/products/sheets/) ## Follow the steps 1. On a Rates tab, type the classifications and the basic hourly and fringe rates from the wage determination and modification number in your own contract documents. Don't take rates from memory or from the AI. 2. Use an AI account your firm allows for payroll records, and mask Social Security numbers and other personal identifiers before uploading anything. 3. Have Claude or ChatGPT read each sub's weekly certified payroll into a Payroll tab: sub, week ending, worker ID as shown (last four digits only), classification, daily straight and overtime hours, hourly rate, fringe paid and how it is shown (per hour or per week). It copies values exactly and writes UNREADABLE instead of guessing. 4. Have it read the week's sign-in sheet photos or the badge export into a SignIn tab: date, sub, worker name or ID, time in, time out and any trade or activity written. 5. Have Copilot in Excel or Gemini in Google Sheets match the tabs on sub, worker and date and flag: workers on site but not on the payroll, hour differences over the tolerance you set, classifications not on your Rates tab, and fringe that works out below your typed rate when divided by actual hours. 6. Send each sub its exceptions list with the dates and sheet references, log the revised payroll when it comes back and rerun the check before the pay application is released. ## Try a small example Replace the bracketed fields with your own project details. No tested sample run is published for this workflow yet. ### Sample input ``` Fill in the bracketed [fields] in the text below with your project data. ``` ### Starter prompt ``` Here are the headers and a few sample rows of my Payroll tab [paste: sub, week ending, worker ID, classification, daily ST and OT hours, rate, fringe paid, fringe basis], my SignIn tab [paste: date, sub, worker, time in, time out] and my Rates tab [paste: classification, basic rate, fringe rate typed from my wage determination]. Write Excel formulas (or a step-by-step Copilot plan) that match payroll to sign-in by sub, worker and date, list workers on site but missing from payroll, flag weekly hour differences over Settings!B1, flag classifications not on my Rates tab, and compute fringe per actual hour worked against my typed rate. Use only my data; do not supply wage rates from memory or say whether a payroll is compliant. ``` ### Expected output ``` Not published yet. Treat any output as a draft and check it against the source documents. ``` ## Check the result - Every value, citation or quantity traces back to a source document. - Missing information is marked as missing, not filled in. ## Limits and recovery - The workbook only shows where the payroll and the site records disagree. It does not determine the correct classification for the work, interpret the wage determination, or decide compliance. Every flag goes to the sub for an explanation, and compliance decisions stay with your payroll compliance lead, the contracting agency and counsel. - Check your organization’s data policy before sharing project files with third-party tools. **Stop or switch when:** The source cannot be verified, permissions are missing, or the result contains unsupported facts. ## Frequently asked questions How does AI help with this? Claude or ChatGPT, then Copilot in Excel or Gemini in Google Sheets: Claude or ChatGPT reads subcontractor certified payroll PDFs and sign-in sheet photos into rows by worker and date; Copilot or Gemini matches them and flags workers missing from payroll, hour differences, classifications not on your typed rate table and fringe below your typed rate per actual hour. A person still checks: Every exception with the sub before the pay application is released, and classification and compliance questions with your payroll compliance lead and counsel. How do I how do I reconcile subcontractor certified payroll against jobsite sign-in sheets with AI?? On a Rates tab, type the classifications and the basic hourly and fringe rates from the wage determination and modification number in your own contract documents. Don't take rates from memory or from the AI. Use an AI account your firm allows for payroll records, and mask Social Security numbers and other personal identifiers before uploading anything. Have Claude or ChatGPT read each sub's weekly certified payroll into a Payroll tab: sub, week ending, worker ID as shown (last four digits only), classification, daily straight and overtime hours, hourly rate, fringe paid and how it is shown (per hour or per week). It copies values exactly and writes UNREADABLE instead of guessing. The full step list is above. Does this use an AI agent or regular software? It is labeled AI assists: AI drafts or analyzes. A person operates the tools, checks the work, and takes action. What tools do I need? Claude, ChatGPT, Microsoft Excel, Microsoft Copilot, Google Sheets. Confirm license, version and cost with the vendor, and try it on a small non-confidential sample first. Has this workflow been tested? Workflow guide · not independently tested. Written from vendor documentation and practitioner use. Labels apply to the steps described here, not every feature of a product. Links were checked when the page was written. ## Where to go next - [How do I rebuild a contractor WIP schedule (over/under billing) in Excel with AI?](https://aecagents.si/use-cases/wip-schedule-over-under-billing) - [How do I match company card statement lines to receipts and code them to jobs and cost codes with AI before month-end?](https://aecagents.si/use-cases/card-receipts-to-job-cost-codes) - [How do I reconcile retainage receivable and payable by job against the latest pay applications with AI?](https://aecagents.si/use-cases/retainage-receivable-payable-reconciliation) - [All Construction Accountant workflows](https://aecagents.si/roles/construction-accountant) - [All Drawings and documentation workflows](https://aecagents.si/tasks/drawings-documentation) ## Evidence and maintenance Written from vendor documentation and practitioner use. Labels apply to the steps described here, not every feature of a product. Links were checked when the page was written. - [Claude (Anthropic) (vendor site)](https://www.anthropic.com/claude) - [ChatGPT (vendor site)](https://chatgpt.com/) - [Microsoft Excel (vendor site)](https://www.microsoft.com/microsoft-365/excel) - [Microsoft Copilot (vendor site)](https://www.microsoft.com/microsoft-365/copilot) - [Google Sheets (vendor site)](https://workspace.google.com/products/sheets/) ## Put it to work Start with a small sample and keep the original record open while you verify the result. ## Know what does the work. Agent executes : An AI agent calls connected tools to carry out bounded actions. You set permissions and review the result. AI assists : AI drafts or analyzes. A person operates the tools, checks the work, and takes action. Conventional automation : Rules or specialist software perform the task. No AI agent is required.