Amendment Runs (Correcting a Paid Payroll)
How to correct a payroll that's already been paid, using Greenroom's Amendment run type
This is what the product calls 'Amendment'
If you've heard this called an "adjustment run" or "correction payroll," that's the same thing — inside Greenroom, the run type is labeled Amendment. This page uses "amendment" throughout to match what you'll actually see on screen.
Once a payroll has been paid, you can't go back and edit it directly — that record is final. To fix a mistake in it, you create an Amendment: a new run that corrects the paid one while leaving the original untouched and fully intact for your records.
What an Amendment Does
In Greenroom's own words: "Correct a previously processed payroll run. Greenroom recalculates wages, taxes, dues, pension, and other payroll obligations based on the changes."
An amendment is its own payroll run, linked to the paid run it corrects:
| Feature | Description |
|---|---|
| Purpose | Correct a payroll run that has already been paid |
| Link to original | Every amendment points at the specific paid run it corrects |
| Period | Copied exactly from the original run — you don't choose a new period |
| Payees | Copied from the original, but all start excluded — you opt in only who you're correcting |
| How corrections are entered | Payment lines (dollar amounts), not rate or hours changes |
When to Use an Amendment
Use an amendment any time you discover a payroll needs a correction after it's been paid — a wrong rate, a missed payment, a deduction that should or shouldn't have applied, and so on. There's no separate approval or company setting that gates this: any paid run can be amended.
| Requirement | Description |
|---|---|
| Original status | The run you're correcting must be paid — draft, in review, approved, or processing runs can simply be edited directly instead |
| Purpose | Required — a short note (up to 280 characters) explaining why the run is being corrected. It shows on the amendment itself and in the audit trail |
A paid amendment can itself be corrected again with a further amendment — corrections aren't limited to one round. You can only have one open (not-yet-paid) amendment per original run at a time; once that one is paid, another can be started against the same original if needed.
Creating an Amendment
- Navigate to Payroll and start a new run.
- Choose Amendment as the run type.
- Under Run to amend, pick the paid run you're correcting — the period fills in automatically from that run.
- Enter a Purpose explaining why this correction is needed. This is required before you can continue.
- In Employees & Loan-outs (and Vendors & Contractors, if the correction involves a vendor or contractor payment), re-include the specific payees you're correcting — everyone else stays excluded.
- Add a payment line for each correction:
- A positive amount pays out the difference owed.
- A negative amount claws back an overpayment.
- Continue through Union Reports and Submit Payroll the same as any other run.
Amendments take corrections as payment lines only — you can't attach a new rate to an amendment entry the way you would on a regular run. If a payee's underlying rate was wrong going forward (not just for the corrected week), fix the rate on their payee record separately so future runs use it.
How the Numbers Recalculate
- Dues and pension recalculate based on the correction amount (the delta), not the full original pay.
- Flat fringes (health insurance and similar flat employer contributions) don't re-fire on an amendment — they were already charged once on the original run.
- Taxes settle through the payroll provider along with the rest of the correction.
- Recurring items — profile premiums and union initiation dues — never start or re-fire on an amendment. Add those on the payee's next regular run instead.
Fees
Amendments carry no $750 minimum — the same percentage-of-wages and $10-per-payee rate as an off-cycle run, with no floor. The reasoning: the original run already paid its $750 minimum, so flooring the amendment again would double-charge for the same payroll. See Platform Fees & Billing for the full fee model.
Viewing Amendments
Amendments appear in Payroll History like any other run, labeled Amendment. Opening one shows which original run it corrects; the Union Reports step on an amendment shows a "Correction report" banner noting every row is amending that reference run.
Best Practices
- Write a clear, specific purpose — it's the only explanation anyone reviewing the audit trail will see
- Re-include only the payees you're actually correcting; leave everyone else excluded
- Use a negative payment line to claw back an overpayment, a positive one to pay out an underpayment
- If the underlying issue is a wrong standing rate, fix the payee's rate separately so it doesn't recur on future runs
- Review the original payroll's numbers before entering the correction, so the payment line reflects the actual difference owed
- Catch errors before the original run is submitted whenever possible — it's simpler than amending afterward
Troubleshooting
| Issue | Explanation |
|---|---|
| Can't find the run you want to amend in the picker | Only paid runs are amendable — if it's still draft, in review, approved, or processing, edit it directly instead |
| Can't continue past the first step | Purpose is required, and you must pick a run to amend, before the amendment draft can proceed |
| Can't attach a rate to a correction line | Expected — amendments take payment lines only. Enter the dollar difference instead |
| A recurring premium or initiation dues won't start on this run | Expected — recurring items don't fire on amendments. Add them on the payee's next regular run |
Next Steps
See Payroll Adjustments for the (differently-named) concept of allowances, deductions, and premiums on a payee's own record, or review Payroll History to find a run to amend.