Under Ohio Revised Code section 153.56, recovery covers work and materials from twenty-one days before notice service onward.
Estimators price subcontract packages with a picture of the job in mind: what the sub will bill, when it will bill, and what happens if the sub is not paid. One question that often gets less attention than it should is how far back a sub's claim can reach. On an Ohio project where Ohio Revised Code section 153.56 applies, start by finding the date the sub serves its notice of furnishing.
The key sentence reads:
> "A subcontractor or materials supplier who serves a notice of furnishing under division (C) of this section as required to exercise rights under this section has the right of recovery only as to amounts owed for labor and work performed and materials furnished during and after the twenty-one days immediately preceding service of the notice of furnishing."
That rule changes how you read a sub's billing history, how you write your subcontract, and how you set aside money for a possible claim.
The steps below follow the order you would work through them on a bid or on an active job. They are practical, not legal advice. The statute's wording controls, and counsel should confirm how it applies to your contract and project.
1. Confirm which right the sub is using
Before you look at any dollar figures, find out what the sub relies on. The limit applies to a subcontractor or materials supplier using the notice-based right quoted above. The limit belongs to a specific claim route under the statute. It is not a general cap on every payment dispute on a job.
Ask the sub, in writing, which right it is exercising and under what section. A sub may have a contract claim against you, a claim under its own agreement, or a statutory claim. Each can carry different time limits and amounts. If the answer is vague, do not assume the window controls. Send the question back and bring it to counsel with the subcontract and project documents.
Also compare your subcontract form against the text of the section, not against what subs usually send. Forms written for another job, owner, or state may use notice language that does not match the statute.
Write down what you find: the route the sub is using, the section it relies on, and the date you confirmed it. A one-page note in the job file is worth more than a memory of a phone call.
2. Pull the notice of furnishing and its service date
The service date is the anchor for every calculation that follows. Get that date right first.
Ask for a copy of the notice itself, not a paraphrase in an email. Record the date it was served, the method used, and the amount or work it claims. If a cover letter is attached, note its date separately. A cover letter date and a service date can differ, and the statute ties the window to service.
Keep proof of service in the file: a courier delivery confirmation, certified-mail return, email with full headers, or portal delivery confirmation. If two dates appear in the sub's papers, flag the mismatch at once. Write down which date you used, why you used it, and what evidence supports it.
One practical point: the notice often arrives well after the sub's work started. A sub may have been on site for months before serving any notice. That gap is why the service date needs its own line in your records, separate from the subcontract start date.
3. Count back twenty-one days from the service date
Write the preceding window's start and end dates on the job calendar.
Be precise. A one-day error moves the cutoff and can change which invoice lines fall inside the window. Exclude the service day from the preceding window; track it with work from service onward. For large amounts, ask counsel how the day count applies to those specific dates.
Set up a simple check: a spreadsheet formula that counts back from the service date, verified by hand for a few dates. Save the formula in the file so anyone reviewing your numbers can repeat the calculation.
In general terms, call the service date day D. The window opens twenty-one days before D and ends on the day before D. Billed work dated inside that range sits in the window. Work dated before the opening day sits outside it. Track work dated on or after D separately as work from service onward. Labeling these three zones before anyone sees a disputed amount keeps the sorting honest.
4. Sort billed work into inside and outside the window
Go through the billing line by line and sort each item by the date labor was performed or material was furnished.
Use the underlying records, not invoice totals alone. Pay applications often cover a whole month, and one line can hide weeks of work on both sides of the cutoff. Ask the sub for date ranges for each line, then check them against daily logs, delivery tickets, and time cards. A breakdown that does not match the logs is a point to raise in writing.
Some lines straddle the cutoff. Do not split them by guessing a proportional share. Ask for the dated quantities behind the line and split only on that support. If the sub cannot produce it, record the unverified portion as disputed and say so in writing. A clearly labeled estimate is easier to defend than a precise-looking number with no source behind it.
Set up three buckets: before the window, inside the window, and from service onward. Keep a running total for each. Highlight the before-window total for your team's claim review.
Watch for materials. Stored materials, off-site deliveries, and deposits can have dates that do not match the labor schedule. Use the furnishing date when sorting materials. If material was delivered on one date and billed on another, note both dates and ask which one the sub relies on.
Change orders follow the same logic. Sort them by performance date, not approval date, and keep the approval paperwork and performance records side by side in the file.
5. Check the sub's claim against your sorted buckets
Compare the sub's claimed amount with your sorted buckets. If the sub claims the full balance but only part of it falls inside the window or after service, the gap is the figure to raise. Lay out a memo with three columns: claimed, inside the window or from service onward, and before the window. Date and sign it.
Check whether the claim includes items that are not labor or materials. Markups, retainage releases, back charges, and interest may not fit the statutory wording. Separate them out and ask the sub, in writing, which section or contract term supports each one.
Track post-notice amounts separately. Update that bucket as the sub continues working. A common error is treating all post-notice billing like pre-window billing. Your memo should show the difference.
Give the sub a chance to respond before you finalize your position. State the service date you used, how you counted the window, and each disputed line. If the sub disagrees, ask it to state its own service date and counting method in writing. Keep the exchange short and factual, and do not concede a date or a bucket on a call that has not been confirmed in writing.
6. Build the window into your bid and subcontract
For estimating, track notice timing alongside the sub's work schedule. Model what the sub can recover under this section and what remains open, rather than assuming the full balance is recoverable.
For each package, build two numbers. The first is what the billing supports inside the window and after service if the notice arrives late, when most work sits before the window. The second is the figure if the notice arrives early. The gap between them shows how much notice timing moves your exposure. Review it at bid time and again when the sub's schedule changes, because resequenced work can shift billing into or out of the window.
If the package includes retainage, pay-when-paid terms, or a bond requirement, have someone check how each interacts with the window. Ask counsel to review those interactions against your contract before you rely on the estimate. For related contract checks, see retainage caps.
In the subcontract, write the mechanics out. Have counsel review notice delivery and service-date wording against the statute. Require each pay application to tie to dated daily logs, delivery tickets, and time cards, with a date-range breakdown for every application. These recommendations make the window easier to apply, but they do not settle how a court would read any clause, so a lawyer should review the final wording.
Finally, give estimators a short checklist for each package. Ask: Which right is the sub using? When was the notice served? Where is the proof of service? Are the billing lines dated? Which bucket does each line fall into? Has the claim been compared against the buckets in writing? A checklist will not replace counsel, but it keeps the basic steps from being skipped on a busy bid.
7. Keep the file ready for a claim
Assemble the file and keep it intact. It should include the copy of the notice, the proof of service, the pay applications with date-range breakdowns, the daily logs, the delivery tickets, your sorted buckets, the dated memo, and the written correspondence with the sub. Put them in one folder with an index, so a reviewer can follow the chain from the service date to each dollar in the claim.
When a claim arrives, send counsel the full file rather than a summary. A summary that omits a daily log or a delivery ticket can lead to conclusions the records later contradict. Note which items remain open.
Keep the file current. If the sub sends a revised claim, add it and note the change. If a corrected date changes the window calculation, record the correction and the reason. A clean history of changes is more persuasive than a final number that appears without explanation.
Do not discard the file at final payment. Claims can surface after close-out, and the file is the record of what you knew and when you knew it. Store it with the other project records, label it so it can be found years later, and note where the original documents are kept.
Close open items while the people who handled the work still remember the details. Open items that sit in a file for a long time are the ones that become problems.
The twenty-one-day window is a short look-back with long consequences. As a practical safeguard, keep records that tie each invoice line to a date.