Utility contractor insurance, for the line you did not mean to hit
A utility contractor's defining exposure is the strike. General liability answers for the person hurt and the property damaged when a bucket or a drill head finds a line, and carries a pollution exclusion that reaches what a gas or fuel line releases; contractors pollution liability is written for that gap. Texas does not license the trade. What it has instead is a statute that names the work: notice to 811 before mechanized digging 16 inches or deeper, and a list of duties the moment a line is damaged. The drill, the vac equipment, and the excavator are property on a floater, the vac truck is commercial auto, and the first laborer on payroll brings workers compensation.
General liability for utility work: the strike, read as a claim
Four things a general liability policy answers for, in the NAIC's list: bodily injury, damage to other people's property, personal injury of the libel kind, and false advertising (NAIC, Insure U: Small Business Insurance). Follow a strike through the first two. The drill head crosses a gas service and the house at the end of it fills; the bodily injury is the occupant, and the property damage is the house and the one next door. The bucket cuts a fiber trunk; the property damage is the cable, and the outage behind it is a loss the carrier and its customers will present to you in a form the policy may or may not recognize. The trencher opens a water main; the property damage is the washed-out street and the flooded basement, and the bodily injury is the driver whose car went into the hole. Those are the claims the form was written for and the ones an underwriter of this trade prices first.
What the form does not answer is the tail. Professional errors are excluded, in the NAIC's list, and here that is the allegation that the locate was misread rather than that the line was hit. And pollution is excluded: the standard general liability form since 1986 carries the absolute pollution exclusion, with a definition of pollutant that reaches "any solid, liquid, gaseous or thermal irritant or contaminant, including smoke, vapor, soot, fumes, acids, alkalis, chemicals and waste" (IRMI, absolute pollution exclusion). A gas main, a petroleum products line, and a sewer force main each release something that definition can reach, and courts disagree on how far the exclusion goes. Contractors pollution liability is the policy written for the gap: third-party bodily injury, property damage, defense, and cleanup for pollution conditions, sudden or gradual, arising from the contractor's operations. The pollution liability page explains the form; on a utility account it is not an add-on, it is the second policy.
Texas 811, read in the statute: the requirement that names this trade
Texas licenses electricians, HVAC contractors, and plumbers, and does not license utility, excavation, or general contractors (TDLR, licensed programs); the Texas contractor insurance hub explains that structure. So the one Texas requirement that reaches every utility contractor by name is Chapter 251 of the Utilities Code, and it is worth reading in the statute rather than in a trade summary. Its definitions do the work. To excavate is "to use explosives or a motor, engine, hydraulic or pneumatically powered tool, or other mechanized equipment of any kind," including boring, digging, ditching, drilling, plowing-in, pulling-in, trenching, and tunneling, "to remove or otherwise disturb soil to a depth of 16 or more inches." An underground facility is "a line, cable, pipeline system, conduit, or structure that is located partially or totally underground and that is used to produce, store, convey, transmit, or distribute telecommunications, electricity, gas, water, sewage, steam, or liquids such as petroleum, petroleum products, or hazardous liquids." A notification center is the entity that "operates a notification system capable of serving excavators and operators statewide," which in Texas is the 811 center (Tex. Util. Code §§ 251.002, 251.101).
The window, the notice, and the exceptions. Before beginning, the excavator notifies a notification center "not earlier than the 14th day before the date the excavation is to begin or later than the 48th hour before the time the excavation is to begin, excluding Saturdays, Sundays, and legal holidays." The trade calls that two business days, and the statute adds a rule for Saturday notices: work may begin the following Tuesday at 11:59 a.m. The notice carries the person serving it, the site by address or an accurate description, the company's name, address, and phone, "the starting date and time and the anticipated completion date of excavation," and "a statement as to whether explosives will be used." An emergency "necessary to respond to a situation that endangers life, health, or property," or where the public need for uninterrupted service compels immediate action, may begin at once; the excavator "shall take reasonable care to protect underground facilities" and "shall notify a notification center as promptly as practicably possible," and misrepresenting the emergency is its own offense. The listed exceptions include agricultural work on private property and routine county road maintenance to 24 inches (Tex. Util. Code §§ 251.151, 251.152, 251.155, 251.156).
The damage duties and the penalty. Section 251.159 is written for the day the locate was wrong. "If an excavation operation results in damage to an underground facility, the excavator shall immediately contact the underground facility operator to report the damage." "Only the operator or a person authorized by the operator may perform repairs." "An excavator shall delay backfilling in the immediate area of the damage until the damage is reported to the operator and a repair schedule is mutually agreed to by the excavator and the operator." And "If damage endangers life, health, or property because of the presence of flammable material, the excavator shall keep sources of ignition away." An excavator that violates the notice, the notice contents, or the damage section "is liable for a civil penalty of not less than $500 or more than $1,000," with higher ranges for a second violation in a year (Tex. Util. Code §§ 251.159, 251.201). For pipelines carrying gas, hazardous liquids, and similar products there is a second layer. The Railroad Commission's underground pipeline damage prevention rule, 16 TAC Chapter 18, "became effective September 1, 2007," and "applies to pipeline operators and persons engaged in or preparing to engage in excavation activities in the vicinity of a pipeline"; under it, "Each excavator that damages an underground pipeline shall notify the operator of the damage through the notification center at the earliest practical moment but not later than one hour following the damage incident," and files a Texas Damage Reporting Form with the Commission "within 30 days of the incident" (Railroad Commission of Texas, Resources for Excavators). The federal layer under both is OSHA's excavation standard, which requires the estimated location of "sewer, telephone, fuel, electric, water lines, or any other underground installations" to be determined before an excavation is opened and the exact location found "by safe and acceptable means" as the work approaches them (29 CFR 1926.651(b)). Read together: the penalty is the statute's, the report is the Commission's, and the repair, the outage, the fire, and the injury are the claim. An underwriter who asks for your strike history is asking for the 251.159 calls you have made.
Utility contractor insurance requirements: the licensed-state example
Where a state licenses the trade, it licenses it by the pipe. California's Contractors State License Board has a C-34 classification, Pipeline Contractor, described in the Board's regulation as a contractor who "fabricates and installs pipelines for the conveyance of fluids, such as water, gas, or petroleum, or for the containment or protection of any other material, including the application of protective coatings or systems and the trenching, boring, shoring, backfilling, compacting, paving and surfacing necessary to complete the installation of such pipelines" (CSLB, C-34 Pipeline Contractor). The license carries a $25,000 contractor's bond for every licensee and a liability insurance condition for licensees organized as LLCs (CSLB, Bond Requirements; CSLB, LLC licenses). The electrical side of the same trench is a licensed trade in Texas too, with a liability floor written into the license, which the electrical contractor insurance page explains; the conduit is theirs and the trench is yours. Outside a licensing state, the requirement a utility contractor meets is the one in the utility owner's or the municipality's contract, and those specifications are where pollution liability usually appears by name.
Equipment: the drill, the vac, the excavator, and the locators
A utility contractor's capital is specialized and mobile. The horizontal directional drill and its rods, the mud system, the vacuum excavation equipment that potholes a line before the drill reaches it, the excavator and trencher, the trench boxes, the pipe fusion machine, and the locators and sondes without which none of the rest is safe to run. Business property coverage reaches machinery and equipment, owned or leased (NAIC), but a policy tied to an address is the wrong shape for iron that lives in a right-of-way, so agents write it as an equipment floater, "Property insurance covering equipment that is often moved from place to place," in IRMI's words, "a form of inland marine insurance" (IRMI, equipment floater). The drill rods lost in a bore that could not be pulled back, the locator stolen from an unlocked truck, the excavator flooded in a hole overnight: those are the losses to describe, with each machine's value and whether it is owned, leased, or rented for the job.
Two policies for one machine. IRMI's mobile equipment entry separates them: diggers and similar machines, "even when self-propelled, are not considered automobiles for insurance purposes (unless they are subject to a compulsory or financial responsibility law or other motor vehicle insurance law)," so "Liability arising from mobile equipment is covered in the general liability policy" and physical damage "is usually provided by an 'equipment floater'" (IRMI, mobile equipment). The drill that crosses a gas service is a general liability claim, and possibly a pollution one; the same drill stolen is a floater claim. The trench box, when the work is open-cut, is also a protective system under OSHA's excavation standard, which requires one in any excavation 5 feet or deeper, and in a shallower one unless a competent person has examined the ground and found no indication of a potential cave-in (29 CFR 1926.652(a)(1)); the excavation contractor insurance page reads that standard in full.
Commercial auto for the vac truck and the fleet
A business that owns or leases vehicles needs commercial auto, because personal forms may exclude business-related liability and commercial forms can reach hired and non-owned vehicles, including an employee's own truck on company business (NAIC). The vac truck is the vehicle to describe carefully, because it is an auto on the road and a piece of excavation equipment in the right-of-way, and it carries a tank of spoil and water that changes how it handles. The drill rig trailer, the pipe trailer, the dump, the service truck, and the crew pickups go on the schedule with their use described. The locator who drives his own truck between sites is on company business, and hired and non-owned liability is the line for that vehicle.
Workers compensation for a utility crew
Nearly every state requires an employer to carry workers compensation (NAIC), and the premium is built the way the Texas Department of Insurance describes: each employee's payroll assigned to a classification, the payroll in each class multiplied by a rate per $100, and an experience modifier applied for the employer's own loss history (TDI, workers compensation rate guide). No class code appears here for this trade. What the bureaus do publish is how the neighboring lines are drawn: New York's board classes general excavation, "ditch digging, burrowing, filling or backfilling," under a code of its own and refers road sub-base and rock excavation elsewhere (NYCIRB, Class 6217). Where a utility line crew lands is the bureau's decision in your state, and the answer turns on what you install: gas, water, sewer, electric, and telecom can sit in different classes, and a company that bores fiber all year is described differently from one that lays sewer main. Describe the book by utility and by method, and the class follows.
The laborer paid by the day. For the IRS an employee "works at the control and direction of another," and holding the right to control is enough (IRS Publication 4902). A laborer in your trench under your competent person is under your direction. Texas lets a private employer decline coverage, and the Department of Insurance says workers compensation "is not required in most cases" (TDI, employer resources); the Texas hub has the filing a non-subscriber makes and the defenses it gives up.
Utility contractor insurance cost: what moves the premium
Factors, no figures. Which utilities lead: a company that installs gas and petroleum lines is read differently from one that pulls fiber, and sewer and water sit between them. Method, since directional boring and open-cut trenching put different people in different places. How much of the work is in a public right-of-way with traffic on one side. Your locate practice and your strike history, which is the 251.159 record. The iron on the floater and the trucks on the auto schedule. Payroll by class and revenue. Whether the owner's specifications require pollution liability, and at what limit. Loss history. Your state. The paving contractor insurance page is the trade that closes the road you opened, and landscaping insurance the one that repairs the yard over the bore; the concrete contractor insurance page is the trade that pours the vault and the sidewalk back.
Your state's rules
No state license, an 811 statute written to anyone with a machine, a pipeline rule on top of it, a pollution exclusion in the standard form, and an elective workers compensation system. The Texas hub carries the state's structure; the tree service insurance page is the other trade that works under and around energized lines, and the builders risk page explains the project policy your utility work is usually installed under.
Or start at the overview for how the whole contractor set fits together.