Only 5% of subcontractors get paid on time. That is the baseline. The other 95% are financing someone else's project with their own labor, materials, and credit lines while waiting for a check that may or may not arrive.
Most advice about subcontractor payment disputes starts with what to do after the invoice is 60 days overdue. By then, your leverage is already shrinking. The general contractor has moved on to the next phase, the project owner is focused on completion, and your lien deadlines may be expiring while you are still on site.
The subcontractors who actually collect are the ones who treat payment protection as a pre-construction and mid-project discipline. They read their contracts before mobilizing. They send preliminary notices on day one. They document every payment interaction in writing. By the time a dispute surfaces, they have a paper trail that makes non-payment expensive for everyone except them.
Here is the step-by-step sequence, ordered by when you should act.
The scale of the problem
Slow payments cost the U.S. construction industry an estimated $280 billion in 2024, adding approximately 14% to total construction spending. 82% of contractors face payment waits over 30 days, up from 49% two years prior. 72% of subcontractors wait longer than 30 days for payment.
The gap between perception and reality makes it worse. Subcontractors wait an average of 56 days after submitting a pay application, despite GCs believing it takes 30 days. Your GC may genuinely think they are paying promptly. The calendar says otherwise.
The construction industry's average days sales outstanding (DSO) sits at 83 days, compared to roughly 60 days for all U.S. industries. Late subcontractor payment is how construction finance works by default, and changing that default requires deliberate action on every project.
Step 1: Read your contract before you do anything else
The first thing to check is your subcontract.
Buried in the payment terms, dispute resolution, and termination clauses are the specific rights you have when payment stops. The AIA standard contract, at §9.7, describes a two-stage trigger: if the Architect does not issue a Certificate for Payment within 7 days, or if the Owner does not pay within 7 days after the established date, the Contractor may give 7 additional days' written notice and then stop work until payment is received. That clause also entitles the contractor to recover reasonable costs of shutdown, delay, and start-up, plus interest.
Many GCs use their own contract forms, and those forms may strip out stop-work rights entirely. Without a stop-work clause in the contract, a contractor who suspends work for non-payment may be found in breach of contract.
Two clauses deserve special attention:
- Pay-if-paid clauses condition your payment on the GC receiving payment from the owner. If the owner does not pay, the GC may argue they owe you nothing. Enforceability varies by state.
- Pay-when-paid clauses set a timing mechanism. The GC still owes you; they get extra time. Courts in most states treat this as a reasonable delay, not a defense against payment.
If your contract has a pay-if-paid clause and the owner has not paid the GC, your collection options narrow significantly. Know this before you start work.
Step 2: Send a formal written demand and document everything
Verbal conversations disappear. Emails get buried. A formal written demand, sent via certified mail with return receipt, creates a timestamped record that no one can deny receiving.
Your demand letter should include:
- The original invoice number, date, and amount
- The contract payment terms and how many days payment is overdue
- A specific deadline for payment (10 to 15 business days is standard)
- A statement that you will pursue lien rights, bond claims, or legal action if payment is not received
Keep the tone professional. This letter may end up in front of a judge, a mediator, or a surety, and it needs to read like a business communication.
Before you reach the certified-mail stage, automated invoice reminder tools can resolve many overdue subcontractor payment situations without legal escalation. Nudge sends escalating reminders on a schedule tied to the due date, so follow-ups happen whether you remember or not. Each reminder is logged, which builds the documented trail you need if the dispute does escalate to a lien filing or legal claim.
For more on structuring professional payment requests, see the guide on how to collect payment from clients.
Step 3: File a preliminary notice early
Most states require subcontractors to file a preliminary notice (sometimes called a "notice to owner" or "pre-lien notice") to preserve their mechanic's lien rights. Deadlines vary by state, and missing yours can mean losing lien rights entirely, regardless of how much the GC owes you.
The preliminary notice is a standard protective filing that most property owners and GCs expect to receive. It puts all parties on record that you are furnishing labor or materials to the project and that you intend to preserve your rights under state lien law.
File it on every project, paid or unpaid. It costs very little and protects everything.
Step 4: File a mechanic's lien
A mechanic's lien attaches to the property itself. The GC's failure to pay you becomes the property owner's problem, because the lien clouds title and can block refinancing, sale, or further development. That creates leverage that a demand letter alone cannot.
NCS Credit recorded over 90,000 mechanic's liens filed in a single 12-month period in 2024. Filing is well-established in every state, though deadlines vary sharply. Missing the deadline by a single day kills the lien. Check your state's requirements immediately after the first missed payment.
One complication: most mechanic's liens cannot be enforced until well after the project is complete. For subcontractors struggling with cash flow during an active project, the lien is a future enforcement tool. File it to preserve your rights, but plan for the wait.
For a detailed walkthrough of the lien process and state-specific rules, see the full guide on contractor liens.
Step 5: Suspend work (only if your contract allows it)
Pulling your crew off a job site is the sharpest tool in the box. It is also the most dangerous.
The right to suspend work for non-payment should only be exercised as a last resort. A wrongful suspension can lead to damages, including claims for delays or a breach of contract. You are risking liability for every day the project runs behind schedule because your crew left.
If your contract includes the AIA §9.7 language (or equivalent), you have a defined process: the two-stage notice described above, followed by a work stoppage until payment arrives. The contract entitles you to recover reasonable costs of shutdown, delay, and start-up, plus interest.
If your contract lacks stop-work provisions, suspending work without legal counsel is a gamble. Talk to a construction attorney before you pull anyone off the job.
Step 6: Escalate with bond claims, mediation, or litigation
When demand letters and liens have not produced payment, the next steps depend on whether the project is public or private.
Public projects do not allow mechanic's liens (you cannot lien government property). Instead, subcontractors file a payment bond claim against the surety bond that the GC was required to post. The surety investigates and, if the claim is valid, pays the subcontractor directly. Bond claim deadlines are strict and vary by jurisdiction.
Private projects offer several escalation paths:
- Attorney demand letter. A letter from a construction attorney carries more weight than one from you. Many disputes resolve at this stage.
- Mediation. Faster and cheaper than court. Many construction contracts require mediation before litigation. A neutral third party helps both sides reach a settlement.
- Small claims court. For smaller amounts (thresholds vary by state), small claims court offers a faster path and typically does not require an attorney.
- Civil litigation. For larger amounts or when other methods fail. Expensive, slow, and adversarial, but sometimes the only remaining option.
Build payment protection into every project from the start
1 in 3 subcontractors pull from personal or retirement savings to cover cash flow gaps caused by slow payments. With an industry-average DSO of 83 days against a 60-day all-industry norm, construction subs are routinely financing two to three months of operations out of pocket.
The pattern repeats because most subcontractors address payment protection after a problem surfaces. The ones who stay solvent build it into project setup:
- Progress billing. Bill at milestones. Smaller, more frequent invoices reduce your exposure on any single payment.
- Clear payment schedules. Define payment dates in the contract with specific calendar dates. A date on paper is harder to ignore than a vague "net 30." For more on structuring these, see the guide on contractor payment schedules and cash flow.
- Automated reminders. Manual follow-up fails because you are on a roof or in a trench when the invoice hits 30 days. Automated systems send the reminder whether you remember or not. The guide on how contractors get paid faster covers the operational side in detail.
- Preliminary notices on every job. File them as standard practice on every project you touch.
Getting paid on a construction project is significantly more difficult than it should be. The six steps above will not fix the industry. They will fix your position in it. Read the contract, document everything, file early, and automate what you can. When a GC stops paying, you want to already be three steps into the process.