A subcontractor agreement should include the parties’ legal identities and tax information, a detailed scope of work with firm dates, an independent contractor clause, payment terms with any retainage and pay-when-paid or pay-if-paid language, insurance and indemnification requirements, lien and bond provisions, flow-down obligations from the prime contract, change-order and back-charge procedures, liquidated damages for delay, safety responsibilities, intellectual property assignment where creative work is involved, termination rights, and dispute resolution with choice of law and venue. What a subcontractor agreement should include is driven by one goal: making every obligation enforceable against the right party, so a payment fight or an injury claim doesn’t turn into a credibility contest.
Each section below is a clause or cluster of clauses that belongs in the document. The order loosely tracks how a drafter builds the agreement, but priorities shift by trade and project type.
Parties, Tax, and Licensing Information
The agreement opens with the full legal business name and registered address of both the prime contractor and the subcontractor. The entity name has to be exact, because the contract is only enforceable against the party actually named.
The prime contractor should collect a completed IRS Form W-9 from the subcontractor before work begins. The W-9 captures the subcontractor’s Taxpayer Identification Number or Employer Identification Number along with their business entity type.1Internal Revenue Service. About Form W-9, Request for Taxpayer Identification Number That TIN is what allows the prime contractor to file Form 1099-NEC at the end of the tax year. For tax years beginning in 2026, the reporting threshold for 1099-NEC payments to independent contractors increased from $600 to $2,000.2Internal Revenue Service. Publication 1099 (2026), General Instructions for Certain Information Returns
Licensing is the piece that most often gets skipped. Most states require contractors and subcontractors to hold active licenses for construction, electrical, plumbing, and other regulated trades. If an unlicensed subcontractor performs work, the prime contractor may face fines, and the subcontractor may lose the ability to enforce the contract or file a lien. The prime contractor should verify license status through the state licensing board’s lookup tool before signing, and the agreement should require the subcontractor to maintain that license throughout the project.
Scope of Work and Schedule
Most subcontractor disputes start in a vague scope. A line like “complete plumbing work” invites arguments over which fixtures were included and whether cleanup was the sub’s responsibility. The scope should describe the specific tasks, materials, quality standards, and deliverables in enough detail that a stranger reading it could tell exactly what the subcontractor owes.
The agreement should also pin down exact start and end dates. These anchor the project timeline and become the reference point for any delay provisions. If the prime contractor’s schedule depends on the sub finishing a phase by a particular week, that deadline belongs in the contract rather than in a conversation.
Independent Contractor Status
This clause establishes the subcontractor as a separate business entity rather than an employee. The distinction drives who handles taxes, who provides benefits, and who controls the day-to-day work.
When a worker qualifies as an independent contractor, the hiring business generally does not withhold income taxes or pay the employer share of Social Security and Medicare.3Internal Revenue Service. Independent Contractor (Self-employed) or Employee The subcontractor instead pays self-employment tax on net earnings at 15.3% (12.4% Social Security plus 2.9% Medicare). Earners above $200,000, or $250,000 for joint filers, pay an additional 0.9% Medicare surtax on the excess.4Office of the Law Revision Counsel. 26 U.S.C. 1401 – Rate of Tax The subcontractor is also not entitled to company benefits.
Calling someone an independent contractor in the agreement does not make them one. The IRS examines the actual working relationship: who controls how the work gets done, who provides the tools, and whether the worker can profit or lose money independently. If the hiring business dictates hours, supplies all equipment, and treats the relationship like employment in every way except the label, the IRS can reclassify the worker as an employee, and the hiring business becomes liable for all unpaid employment taxes, including both the employer and employee shares of Social Security and Medicare.5Internal Revenue Service. Worker Classification 101: Employee or Independent Contractor The clause matters, but it has to reflect how the parties actually behave.
Payment Terms
Subcontractor payment structures typically follow milestones rather than hourly billing. Payment triggers on completion of defined phases, such as finishing the foundation, completing rough-in plumbing, or delivering a working prototype. Tying payment to visible progress gives both sides a clean standard: the work is either done or it isn’t.
Retainage
In construction, the prime contractor commonly withholds a percentage of each progress payment as retainage, also called retention or holdback. The standard range is 5% to 10% of each payment, held until the project reaches substantial completion or passes final inspection. Retainage gives the prime contractor leverage to make sure the subcontractor finishes punch-list items and corrects defects. Some contracts reduce the retainage percentage once the project passes a specified completion threshold. The exact terms are negotiable and need to be written into the agreement.
Pay-When-Paid vs. Pay-If-Paid
These two clauses sound similar and operate very differently. A pay-when-paid clause controls timing. The prime contractor will pay the subcontractor within a reasonable period after receiving funds from the client; if the client is slow, the subcontractor waits longer, but the prime contractor still owes the money.
A pay-if-paid clause is more aggressive. It makes the client’s payment to the prime contractor a condition that must occur before the prime contractor owes anything to the subcontractor. If the client never pays, the subcontractor absorbs the loss. Courts in many states scrutinize pay-if-paid clauses closely, and some states prohibit or limit them. For a court to enforce one, the contract language usually has to be explicit that the owner’s payment is a condition precedent to any obligation to pay the sub. Ambiguous wording typically gets read as pay-when-paid instead.
Insurance and Indemnification
Insurance requirements protect both parties when something goes wrong on site. Most subcontractor agreements require the sub to carry at least two coverages:
- Commercial general liability covering bodily injury and property damage caused by the subcontractor’s work. Agreements commonly set the floor at $1,000,000 per occurrence.
- Workers’ compensation covering medical costs and lost wages for the subcontractor’s injured employees. Most states require this once a business has employees, though the specific threshold varies.
The agreement should also require the subcontractor to name the prime contractor as an additional insured on the general liability policy. That status means if someone sues the prime contractor over something the subcontractor did, the sub’s insurance covers the prime contractor’s defense costs and any resulting judgment. Without additional insured status, the prime contractor’s own policy absorbs the hit. A Certificate of Insurance naming the prime contractor as additional insured is the standard proof.
Indemnification goes further than insurance. Where insurance covers specific policy events, indemnification is a contractual promise that if a third party sues because of the subcontractor’s negligence or error, the subcontractor will cover the prime contractor’s legal costs and any damages. Scope varies, and some states limit how broadly these clauses can reach; several states void clauses that force a subcontractor to indemnify the prime contractor for the prime contractor’s own negligence. Specific language in this section prevents extended fights over who pays when litigation hits.
Lien Rights, Waivers, and Payment Bonds
The mechanic’s lien is one of the most powerful tools available to an unpaid subcontractor. A mechanic’s lien is a legal claim that attaches to the property where the work was performed. If the sub isn’t paid, the lien can prevent the owner from selling or refinancing until the debt is resolved, and in extreme cases it can lead to a forced sale. Every state has its own rules on deadlines, notice, and filing, so the specifics depend on where the project is located.
Because liens create problems for owners and prime contractors, subcontractor agreements almost always include lien waiver provisions. The subcontractor signs a waiver releasing lien rights in exchange for payment. The important distinction is between conditional and unconditional waivers. A conditional waiver only takes effect once the subcontractor’s check actually clears. An unconditional waiver takes effect immediately on signing, whether or not payment has arrived. Subcontractors should be cautious about signing unconditional waivers before money is in hand.
On federal construction projects, mechanic’s liens are not available, because a lien cannot attach to government property. The Miller Act fills that gap by requiring prime contractors on federal contracts exceeding $100,000 to post a payment bond protecting subcontractors and material suppliers.6Office of the Law Revision Counsel. 40 U.S.C. 3131 – Bonds of Contractors of Public Buildings or Works Unpaid subcontractors sue on the bond in federal district court.7U.S. General Services Administration. The Miller Act: How Payment Bonds Protect Subcontractors and Suppliers Most states have enacted similar “Little Miller Acts” covering state and local public projects.
Flow-Down Clauses
A flow-down clause takes the prime contractor’s obligations to the owner and passes them through to the subcontractor. The sub ends up held to the same quality standards, scheduling requirements, and administrative procedures that the prime contractor accepted. The clause works by incorporating the prime contract into the subcontract by reference.
Subcontractors often sign flow-down provisions without ever reading the prime contract. Aggressive arbitration clauses or unusual insurance requirements in the prime contract flow down too. Before signing, a subcontractor should request a copy of the prime contract, and the general contractor should provide one, redacting sensitive pricing if necessary. When terms in the subcontract conflict with terms in the prime contract, courts generally give priority to the subcontract’s specific language over the incorporated provisions.
Change Orders
Scope changes are normal. The owner wants a different finish, the architect revises plans, or site conditions turn out different than anyone expected. The agreement should require a formal written change order before any extra work begins.
A valid change order should include a description of the new work, the cost adjustment, the schedule impact, the revised total contract price, and signatures from both parties. Verbal “just handle it and we’ll figure out the money later” arrangements are where subcontractors lose the most money. Without written authorization, proving the sub was asked to do extra work and that a price was agreed becomes a credibility contest. Courts consistently favor documented agreements over conflicting memories.
Back Charges
A back charge is a deduction the prime contractor takes from the subcontractor’s payment to cover costs the sub should have handled, such as cleanup, damage repair, or correcting defective work. Agreements that don’t address them invite abuse.
The protection for both sides is a written notice requirement. Before deducting anything, the prime contractor should have to notify the subcontractor in writing, describe the problem, and give the sub a reasonable window to fix it. Industry forms typically require written notice before the back charge is incurred, followed by a detailed accounting within a set number of days. If the subcontractor isn’t given a chance to correct the issue before money disappears from a payment, the back charge is much harder to defend.
Liquidated Damages for Delay
When a project delay would cause financial harm that is difficult to calculate in advance, the agreement can specify a predetermined daily or weekly dollar amount the subcontractor owes for each day past the deadline. These are liquidated damages, and they are enforceable in most states so long as the amount is a reasonable estimate of actual harm rather than a penalty. Courts will throw out a liquidated damages clause that looks punitive.
Well-drafted clauses include a cap on total liquidated damages, often 5% to 10% of the subcontract value, and carve out exceptions for delays caused by the prime contractor, the owner, or force majeure events like natural disasters. Paying liquidated damages does not remove the subcontractor’s obligation to finish the work.
Safety Compliance
OSHA holds more than one employer accountable on a shared worksite. Under its multi-employer citation policy, OSHA categorizes employers into four roles: creating, exposing, correcting, and controlling. A general contractor that exercises supervisory authority over the site is typically a controlling employer and can be cited for a subcontractor’s safety violation if the GC failed to exercise reasonable care to detect and prevent it.8Occupational Safety and Health Administration. CPL 02-00-124 – Multi-Employer Citation Policy
The agreement should assign day-to-day safety responsibilities clearly. At minimum, the subcontract should require the sub to comply with all applicable OSHA standards, designate a competent person on site whenever its workers are present, and pass the same safety requirements through to any lower-tier subcontracts. The agreement should also spell out the prime contractor’s authority to stop work for safety violations and to charge the subcontractor for the costs that stoppage creates.
Intellectual Property and Work Product
For subcontractors producing creative or technical deliverables such as software, designs, or written content, ownership of the finished product is not as obvious as most people assume. Under U.S. copyright law, an independent contractor generally owns the copyright to work they create, even if someone else paid for it. The “work made for hire” doctrine that automatically gives ownership to the hiring party applies to employees. For independent contractors it covers only a narrow list of work categories, and only when a written agreement specifically designates the work as made for hire.
If the prime contractor expects to own the deliverables outright, the agreement needs an explicit intellectual property assignment clause transferring all rights. Without that language, the subcontractor may retain ownership and the prime contractor gets only an implied license to use the work for its intended purpose. This provision costs nothing to include and can be expensive to litigate after the fact.
Termination Provisions
Every subcontractor agreement should address how either party can end the relationship before the work is finished. Two types of termination serve different purposes:
- Termination for cause lets one party end the agreement because the other breached. Common triggers include failure to perform on schedule, defective work not corrected after notice, or lapsed insurance. The terminating party typically must provide written notice and a cure period before pulling the trigger.
- Termination for convenience lets one party end the agreement for any reason, without proving the other did anything wrong. This gives the prime contractor flexibility when priorities shift or funding falls through. The subcontractor is usually entitled to payment for work already completed plus reasonable demobilization costs.
The agreement should also specify what happens to materials on site, how final payment is calculated, and whether the prime contractor can hire a replacement to finish the subcontractor’s scope.
Dispute Resolution, Choice of Law, and Venue
Dispute mechanics get ignored during signing and become central when something goes wrong. The agreement should specify whether disputes go to mediation, arbitration, or court.
Arbitration uses a private decision-maker, often someone with construction industry experience, instead of a judge or jury. The trade-off is higher upfront costs for the arbitrator’s fees in exchange for a typically faster resolution and a decision-maker who understands the subject matter. Mediation is non-binding and puts a neutral third party in the room to help both sides reach a settlement. Many agreements require mediation first, then arbitration if mediation fails.
Choice-of-law and venue clauses determine which state’s laws govern the contract and where any legal proceedings take place. A subcontractor based in one state working on a project in another should pay attention here, because litigating a dispute a long way from home is expensive. If the agreement is silent on these points, default rules can produce unpredictable results.
Signing and Recordkeeping
Once terms are finalized, both parties should review the complete document to confirm every detail matches what was negotiated. Discrepancies in the payment schedule, scope, or insurance requirements should be corrected before anyone signs. Traditional ink signatures and electronic signatures are both acceptable; federal law provides that a contract or signature cannot be denied legal effect solely because it is in electronic form, so digital platforms with an audit trail are legally valid for these agreements.9Office of the Law Revision Counsel. 15 U.S.C. Chapter 96 – Electronic Signatures in Global and National Commerce
Date the document to establish when obligations take effect. Both parties should retain a fully executed copy. That copy becomes the reference point for resolving disputes, substantiating tax deductions, and responding to audits. Construction claims can arrive years after completion, so keeping the agreement accessible alongside change orders, lien waivers, and certificates of insurance is part of the job.