Timesheet-to-Payroll Export Builder: From Approved Hours to a Rejection-Free Import File

The problem this kills

Every pay cycle, the payroll admin does the same nerve-wracking ritual. Pull the approved hours. Open payroll's finicky import template — the one with columns in a precise order, earning codes that must match exactly, and a format that breaks if a value is text instead of a number. Then start the manual reshuffle: regular hours here, overtime there, holiday and PTO into their own coded rows, one block per employee. Total it up. Cross your fingers that nobody got double-counted, that no rate is missing, that the file won't bounce back with a cryptic rejection an hour before the deadline.

It's repetitive, high-stakes, and unforgiving. One mis-mapped earning code or one fat-fingered total means an employee is underpaid, the file is rejected, or you're re-keying at 9pm. You do not need to be a developer to put guardrails around this.

What you'll build

A simple internal web tool for your payroll handoff. You import the cycle's approved hours. The tool maps every hour to the right payroll earning code — regular, overtime, holiday, PTO, sick, and any custom codes you use — using a mapping you set once. It validates before it lets anything through: reconciles totals, flags employees with missing pay rates, and compares this period against the last one to catch outliers — zero-hour employees, suspiciously high totals, OT spikes. Payroll reviews the validated export — employee counts, total hours, OT totals, the anomaly list — and approves it. Only then is the file marked ready and generated in your payroll system's exact CSV or fixed-width layout. Validation errors block the file until they're fixed.

What's inside the Implementation Plan

The downloadable plan is a step-by-step file you paste into an AI coding agent. It opens by interviewing you about your business — your timesheet source, the exact columns in your approved-hours export, your payroll system and its import spec, your real earning codes, how you express OT and PTO, your pay period calendar, and your approval rules — so the tool is tailored to how your payroll actually runs, not a generic template. From there it walks the agent through the data model, the import, the earning-code mapping, the validation-and-anomaly engine, the payroll approval gate, and the layout-exact export. Every step ends with a ready-to-copy prompt. This tool is file-first by design: there's a "No API yet?" path so you can import a CSV and export the payroll-ready file today, with no integration needed.

The governance it includes (this is the point)

This is people's pay, so the plan builds in the controls an HR/payroll team needs: login so only your payroll team can use it; row-level security so you only ever see your own organization's data; a complete audit trail of who imported, mapped, approved, and exported what, and when; a hard human-approval gate where payroll signs off on the validated totals before any file is marked ready for import — and validation errors block it outright; and a duplicate guard keyed on employee ID plus pay period, so the same period can never be exported twice.

Who it's for

Payroll admins, HR coordinators, and payroll managers who manually reformat approved hours into payroll's import template every cycle and dread the rejected file. If you can describe how you fill in that template today, you can build this.

You've got this — start with the plan, paste the first prompt, and answer a few questions about your pay cycle. Your first clean, validated export is a weekend away.