The clauses that decide whether a paving job makes money or turns into a fight are scope, change orders, site conditions, weather days, payment and retainage, warranty and termination, so read each one and ask its question before you sign. This is general education, not legal advice; have an attorney review the contract, because the law varies by state.
Scope and specifications: what the price actually buys
The scope clause, and the documents it points to, decide what your price covers. Anything left out of them is extra work, and extra work gets paid only through a change.
Public owners publish how they write these terms, and their wording makes a useful reading guide. Caltrans’s construction manual, which tells California’s resident engineers how to administer state highway contracts, starts from the documents: “Project plans, specifications, and other bid documents define the scope of the contract, and describe the details for the construction and completion of the whole work contemplated.” That is one agency’s practice on its own highway work (the California page covers that state’s rules for contractors); a private lot contract has whatever terms you and the owner write.
So read your scope for what a lot job argues about later: what is being done (mill and overlay, full-depth replacement, sealcoating, crack filling, striping), where the limits are drawn, whether base repair is included or excluded, who handles drainage and utilities, and whose specification governs.
The same manual defines the category every vague scope creates: “Extra work is any work, desired or performed, but not included in the original contract.” A scope that matches the numbers behind your bid is built in estimating an asphalt paving job. If the contract bundles sealcoating or striping with paving, each line brings its own exposures, set out on the sealcoating and striping pages.
Change orders: in writing, with price and time, before the work
A change order is how added or different work gets paid, and the rule running through public contracts is that it is written down before the work, with both the price and the schedule settled.
The federal changes clause for fixed-price construction lets the government, “by written order designated or indicated to be a change order, make changes in the work within the general scope of the contract”. A spoken instruction counts only when the contractor gives written notice of it, and nothing else counts: “Except as provided in this clause, no order, statement, or conduct of the Contracting Officer shall be treated as a change under this clause or entitle the Contractor to an equitable adjustment.” It also sets a deadline you cannot miss: “No proposal by the Contractor for an equitable adjustment shall be allowed if asserted after final payment under this contract.”
The Caltrans manual’s section on scope of work tells its engineers, “If a change must be made, formalize it by executing a change order.” It adds: “Discuss with the contractor all elements of that change, including the method of compensation and the effect on contract time.” Added work is still your work: “The contractor bears the same responsibility for this changed work as for any other work performed under the contract.”
On a private job, read who may approve a change, whether an email counts, and whether a change carries its time as well as its price. When a bond stands behind the job, how the surety reads a change belongs to bid, performance and payment bonds for paving contractors.
What lies under the old pavement: site conditions
When the ground under a lot is not what the documents showed, whether you are paid for the extra work turns on two things: whether the contract has a clause for it, and whether you gave notice in time.
The federal-aid highway program writes a standard changed-condition clause into the contracts state agencies let with federal money. Under it, “the party discovering such conditions shall promptly notify the other party in writing of the specific differing conditions before the site is disturbed and before the affected work is performed.” The penalty for skipping that step is stated just as plainly: “No contract adjustment which results in a benefit to the contractor will be allowed unless the contractor has provided the required written notice.”
The Caltrans manual’s list of what is not a differing site condition ends with “weather-related events.” Soft subgrade nobody expected is a site condition; a wet week is a schedule question.
A private contract may carry a clause like this, a weaker one, or none. Read whether it does and what notice it requires, and build the habit anyway: stop, photograph, and send written notice before the crew digs further.
Real-World Scenario: A paving company is milling and overlaying an office park lot when the crew uncovers soft, wet base under a row of stalls near a drain. The property manager tells the foreman by phone to dig it out and fix it. The crew does, and the invoice is disputed for months, because the contract called for written changes and nothing was written. On the next job, the foreman stops and calls the office, and a written notice and change request go out before any digging starts.
Weather days, completion dates and running late
Weather usually buys a paving contractor time rather than money, and the contract’s definition of a weather day decides how much time.
The Caltrans manual’s section on prosecution and progress counts days by what the job is waiting on: “If the controlling activity is not dependent upon weather, such as concrete curing or an embankment settlement period, a working day must be charged during adverse weather.” It recognizes that a wet base does not dry the moment the rain stops: “When determining nonworking days, loss of time because of adverse weather may extend beyond the period of actual adverse weather.” And it does not limit bad weather to rain and cold: “Adverse weather can be other than wet or cold weather.” Heat and wind matter to a striping crew as much as rain matters to a paver.
The federal default clause for fixed-price construction lists “Unusually severe weather” among the causes that can excuse a delay. The federal-aid suspension clause, by contrast, pays its adjustment only for a suspension “not caused by weather”. Time, in other words, is often available; money for the lost day usually is not.
Read whether the contract sets a completion date or a count of working days, how it defines a day lost to weather, whether it recognizes the season’s end when plants stop producing mix, and what happens if you finish late. Public contracts often charge liquidated damages for a late finish, and private ones may too. A job that slides past the season also moves your cash, which is the subject of working capital through a paving season.
Payment terms, retainage and the money held back
The payment clause decides when you are paid, what triggers each payment and how much is held back until the end, and on a paving job that clause often decides whether the season is profitable.
Public progress payments follow completed work. The payment section of the same Caltrans manual tells engineers to “Include all bid item work completed satisfactorily in accordance with the contract in progress payments.” The federal rule on progress payments under construction contracts treats retainage as a tool for a job that is falling behind, not a routine deduction: “Retainage should not be used as a substitute for good contract management, and the contracting officer should not withhold funds without cause.” It also says what happens at the end: “Upon completion of all contract requirements, retained amounts shall be paid promptly.”
Private contracts set their own terms, and retainage practice varies by owner and by state. Read when invoices are paid, what the owner may withhold and why, what event releases the retainage, and whether change-order work is billed on the same schedule. On a subcontract, look for wording that ties your payment to the general contractor’s own payment, and ask your attorney what that wording does where the job is.
Two neighboring questions have their own articles. Who a payment bond protects is covered in the bonds article linked above. A request to change the bank details on a progress or retainage payment is a known fraud pattern, described in payment fraud and cyber risk for paving contractors.
Warranty language: what you promise about the pavement
The warranty clause is your own promise about the finished work, and you carry it yourself, so read it for exactly what it promises.
In the federal warranty of construction clause, the contractor warrants “that work performed under this contract conforms to the contract requirements and is free of any defect in equipment, material, or design furnished, or workmanship performed by the Contractor or any subcontractor or supplier at any tier.” The remedy is yours to fund: “The Contractor shall remedy at the Contractor’s expense any failure to conform, or any defect.” Notice runs the other way: “The Contracting Officer shall notify the Contractor, in writing, within a reasonable time after the discovery of any failure, defect, or damage.” If you do not come back, the owner may fix it and charge you. The clause also says the warranty does not cut off the owner’s rights over “latent defects, gross mistakes, or fraud.”
Read what the warranty covers: workmanship, materials, or both. Read what it excludes: the owner’s own design or specification, an overlay placed over a base you recommended replacing, traffic wear on sealcoat and paint. The federal clause itself carves out design the government furnishes, so ask for the same carve-out when the owner dictates the section. Read how the owner must report a problem and what event starts the warranty.
A warranty is a contract promise, not an insurance promise. Where your general liability policy stops on your own work is explained on that page, and it is worth reading before you promise more than you can fund.
Termination: how the job can end early
The termination clause says how either side can end the contract before the work is finished, and what is paid when that happens.
The Caltrans manual lists the grounds on which the state may take control of a job away from a contractor: “Termination of control may occur only when a contractor fails to supply an adequate work force, fails to supply material of proper quality, fails to make proper and timely payments to subcontractors, or fails in any other respect to perform the work with the diligence and force specified by the contract.” It also says who usually finishes the work: “Normally, when Caltrans terminates the contractor’s control, the surety (bonding company) assumes responsibility for completing the contract.” What that means for your bond is covered in the bonds article.
The federal default clause adds a safeguard: if a default termination is later found to be wrong, “the rights and obligations of the parties will be the same as if the termination had been issued for the convenience of the Government.” Ending a public contract for convenience is uncommon; the Caltrans manual says simply, “Termination of contracts is rare.”
On a private job, read whether the owner can end the contract for convenience and what you are then paid for work in place, mix ordered and demobilizing, what chance to cure comes before a default termination, and whether you may stop work when you are not paid.
Before you sign: the markup and the insurance article
The last step is a markup: list your questions, write the answers into the draft, and send it to the people who should read it before you sign.
An attorney reviews the draft, because the business terms above sit on state law that varies. Your estimator or foreman reads the scope and schedule, because they will find out on the job whether the words match the work.
A few clauses are about insurance rather than the business of the job. An indemnity or hold harmless clause decides whose fault you agree to answer for, and how your policy reads that promise is the subject of indemnity clauses and the insured contract. The insurance article, with its certificate and additional insured requirements, is read against your policies; the general liability page covers that ground, and the paving contractor insurance hub explains how contracts shape the lines and limits you carry.
Send us the draft contract, with its insurance and indemnity articles, and request a quote so your coverage is checked against the terms before you sign.