A client who withholds payment, expands the assignment, or ends the job early may have breached the agreement. Your strongest first move is a paper trail: preserve the deal, show what you delivered, identify what changed, and calculate the unpaid amount.

For a U.S. contractor, the answer usually turns on the contract, state law, worker classification, and dispute forum. A 1099 label does not create a universal payment deadline. It also does not automatically remove wage protections if the relationship functioned like employment. Turns out, the original paperwork often matters more than the label on a tax form.

This is general information, not legal advice. Construction liens, employment claims, and filing deadlines are especially state-specific.

Fixed figures deserve caution. A 90 percent lien success rate, a 70 percent contractor win rate, and a universal $10,000 small claims limit are not reliable national rules. Results, dollar caps, and deadlines depend on the state, facts, forum, and evidence.

Read the agreement before writing a demand

Start with the paperwork. Small details matter.

A contract may be one signed PDF, or it may include an estimate, statement of work, online terms, change orders, emails, and invoices. Save every version. The newest approved document may control an older promise.

If documents conflict, keep the conflict visible. Do not fill a gap with an assumption just because the arrangement felt clear at the time.

If a client has not paid

There is no single federal 30-day rule for every private contractor invoice. The due date usually comes from the agreement, applicable state law, or a specialized rule covering a particular project or industry.

Federal prompt-payment rules can apply to certain government contracts. State prompt-payment laws may cover specific construction or commercial transactions. They do not automatically govern every private freelance invoice.

Start by comparing the invoice with the contract. Check whether payment depended on delivery, approval, a milestone, a customer payment, or corrected paperwork. A client should be able to identify the specific work it says is missing or defective, rather than simply rejecting the entire bill.

To be honest, some late payments come from an approval bottleneck or a missing purchase-order detail. Ask about that once, in writing. If part of the work is accepted, request the undisputed amount while the remaining issue is reviewed.

Your demand should identify the parties, agreement, work performed, invoice numbers, amount due, payment history, and requested payment date. Use the notice method required by the contract. Email may not be enough if the agreement requires a particular address or delivery method.

Do not keep adding unpaid work indefinitely. Review the suspension and termination clauses first, then state what you will pause and what the client must do to cure the problem.

Construction liens require a separate check

A mechanic's lien is a state-created remedy tied to qualifying work that improves real property. It is not a general collection tool for every contractor.

Eligibility can depend on your role, the type of project, the property, and your relationship with the owner or general contractor. Some states require preliminary notices. Others impose strict rules for recording, serving, and releasing the lien.

The deadline may run from a project event rather than the invoice date. Check the applicable state law immediately. A late or defective filing can eliminate the lien or create a dispute of its own.

A lien does not prove the amount owed or guarantee payment. It secures a claim only if the statutory requirements are met.

A practical sequence for resolving nonpayment

Use this order as a working checklist. The contract may require a different sequence.

1. Reconcile the account. Calculate the contract price, approved additions, payments, credits, disputed amounts, and expenses. Do not demand a number you cannot explain.

2. Preserve the record. Save the agreement, messages, invoices, delivery records, time entries, approval notes, photos, and payment confirmations. Keep original files where possible.

3. Send a focused notice. Describe the breach, attach the relevant invoice, and state the action needed. Give the cure period required by the agreement. If none exists, choose a clear and reasonable deadline.

4. Ask for a specific response. If the client claims defective or incomplete work, request the exact deliverable, date, and contract standard at issue. A vague objection is hard to resolve.

5. Check deadlines and forum rules. Review the statute of limitations, lien deadline, pre-suit notice requirements, arbitration clause, venue, and governing-law clause. These rules can matter more than the amount in dispute.

6. Choose the filing path. Depending on the agreement and state, that may be mediation, small claims court, arbitration, civil court, a lien, or another administrative claim.

7. Plan collection separately. A judgment is not the same as cash. Collection procedures, exemptions, and available assets vary by state.

Before filing, verify the client's exact legal name and address. Naming the wrong entity can waste time.

Scope creep, change orders, and alleged defects

Scope creep is usually a contract administration problem before it becomes a lawsuit. When a client asks for an add-on, confirm the revised work, price, schedule, assumptions, and approval in writing.

A short message can prevent a long argument: "This request adds X, changes the delivery date to Y, and increases the fee by Z. Please confirm before work begins." Get this in writing.

If you completed extra work without formal approval, the claim is not necessarily lost. Texts, project tickets, time records, prior practice, and the client's acceptance may support your position. The proof is simply less certain.

A client who says the work is defective should identify the specific failure and the promised standard. Compare that complaint with the scope, acceptance terms, and any written approval. If a cure is practical or required, propose one without admitting more than the facts support.

Do not delete files, disable access, or destroy project history in frustration. That can create a second dispute.

What happens when the client ends the job?

Early termination is not automatically wrongful. A termination-for-convenience clause may allow the client to end the relationship while still requiring payment for completed work, approved expenses, or a stated termination amount.

A termination-for-cause clause may require notice, a defined breach, and an opportunity to cure. Read those steps closely. Missing one can affect the claim.

If the agreement says little, state contract law and the facts may determine what happens next. The parties' conduct, work already accepted, reasonable notice, and losses can all matter.

An independent contractor should not assume that employee wrongful-termination rules apply. A termination tied to discrimination, retaliation, a protected wage complaint, or another statute may raise a separate claim, especially if the relationship was misclassified.

Finish the handoff carefully. Return property, identify completed files, preserve proof of delivery, and confirm what remains unpaid.

Does a 1099 label settle your legal status?

No. For Fair Labor Standards Act purposes, the federal analysis focuses on the economic reality of the working relationship. The current 29 CFR Part 795 describes factors including control, opportunity for profit or loss, investments, permanence, whether the work is integral to the business, and skill and initiative.

No label decides it.

State wage, tax, unemployment, and workers' compensation laws may use different tests. A person can be treated as an independent contractor for one purpose and an employee for another.

Facts that may deserve closer review include fixed schedules, close day-to-day supervision, restrictions on outside customers, required personal service, and heavy economic dependence on one company. Those facts do not decide the issue alone.

If the relationship looked like employment, do not limit yourself to an unpaid-invoice theory. A labor agency, tax authority, or employment lawyer may be the more appropriate starting point, depending on the right you are seeking. Keep time records and instructions from the company.

Noncompetes, confidentiality, and client restrictions

Noncompetes deserve skepticism. There is no single nationwide rule that safely limits every contractor noncompete to one year or six months.

Enforceability can depend on state law, the worker's actual status, the restricted activity, geographic reach, duration, legitimate business interests, and public policy. Federal policy has also been litigated and revised, so a headline about an agency rule is not enough.

The FTC's noncompete rule materials provide federal rule text and agency information. Check the current status and the law governing your contract before relying on them.

Confidentiality, nonsolicitation, customer restrictions, and intellectual property clauses are separate questions. A noncompete may be unenforceable while a valid confidentiality obligation still applies. Read each clause on its own.

Who owns the work product?

Payment, possession, and copyright ownership are not always the same thing. Look for an assignment, license, work-made-for-hire language, approval condition, and any terms covering source files or pre-existing materials.

The U.S. Copyright Office explains that copyright ownership and exclusive rights can be transferred in whole or in part in Circular 92, Chapter 2. That makes the contract wording important.

Identify what you created for the client and what you brought with you. Templates, code libraries, methods, stock assets, and third-party materials may need different treatment.

Keep the signed agreement and attachments together. An invoice usually cannot rewrite an earlier ownership clause by itself.

Choosing between negotiation, court, arbitration, and a lien

Match the process to the contract and the claim. The fastest route is not always the cheapest one.

Thing is, arbitration is not automatically cheaper. A private proceeding can still involve substantial filing and decision-maker fees, and the contract may shift those costs.

Small claims court is not automatically the right answer either. Read the local limit and service rules before filing. A claim can fail procedurally even when the invoice is valid.

Build an evidence file before escalating

Evidence works best as a timeline, not a pile of screenshots.

• [ ] Signed contract, proposal, online terms, amendments, and change orders
• [ ] Invoices, payment records, credits, and a current balance calculation
• [ ] Emails, texts, project tickets, approval messages, and client instructions
• [ ] Time records, delivery confirmations, photos, file history, and version logs
• [ ] Complaints, requested corrections, cure attempts, and final handoff records
• [ ] Lien notices, legal notices, arbitration terms, and the client's correct legal name
• [ ] A one-page timeline linking each event to the contract or invoice

Name files by date and keep the originals. Do not edit a screenshot to make the history look cleaner.

Questions contractors often ask

Can a client withhold all payment because of a small defect?

Not automatically. The contract, acceptance terms, seriousness of the defect, and state law may determine whether withholding some or all payment is justified. Ask the client to identify the issue and calculate the disputed amount separately.

Can I pursue an unpaid invoice without a signed contract?

Possibly. A proposal, messages, delivered work, accepted pricing, invoices, and payment history may help establish an agreement. Enforceability and damages depend on the facts and applicable law.

Can I recover attorney's fees?

Not automatically. Fees may be available when a contract, statute, court rule, or valid fee-shifting clause allows them. Check that language before assuming litigation costs will be reimbursed.

Does a mechanic's lien guarantee payment?

No. It can provide security for a qualifying construction claim, but only if the statutory requirements are met. The property owner or another party may still contest the amount, timing, or validity.

Is small claims court better than arbitration?

Neither is always better. Check the contract first, then compare the claim amount, filing cost, evidence, deadlines, discovery limits, and appeal rules.

Your next move

Put the agreement, invoice ledger, timeline, and disputed messages in one folder today. Then check the contract's notice, termination, arbitration, governing-law, lien, and intellectual-property terms against the deadlines in your state.

If a lien deadline is near, the amount is significant, or the worker-classification facts are unclear, take that folder to a licensed attorney or local legal-aid or business clinic before filing.