Insurance types for service contractors explained

Start with the risks, not the policy names

Insurance agents talk in acronyms. Owners think in events. Before you look at quotes, list the things that could actually go wrong in a normal week, then match each event to the policy built for it. Most service contractors end up with the same core set, plus one or two policies that fit their trade.

• A customer trips over a hose or a leak ruins a ceiling: general liability.
• A technician falls from a ladder or strains a back lifting a condenser: workers' compensation and employer's liability.
• A van runs a red light on the way to a call: commercial auto.
• A trailer of mowers or a van full of meters is stolen overnight: tools and equipment (inland marine).
• A design, load calculation or inspection recommendation turns out wrong: professional liability or errors and omissions.
• A serious crash or injury claim goes beyond your primary limits: umbrella or excess liability.
• An employee steals from a customer: crime or employee dishonesty coverage, sometimes alongside a bond.

Where the serious losses come from

Work fatalities are the extreme end of risk, but they show where severe claims come from. BLS counted 5,070 fatal work injuries in 2024^[1]. Transportation incidents were the largest category at 1,937, followed by falls, slips and trips at 844^[1]. Construction and extraction occupations alone recorded 1,032 deaths, 370 of them from falls^[1]. For crews that drive all day and work on ladders and roofs, auto and workers' compensation are not optional extras.

These numbers also explain why commercial auto and workers' compensation are often the most expensive lines for a service business. Insurers price them on vehicles, drivers, payroll and job classifications, so accurate driver lists and payroll reports are as important as the policy itself.

The policies, side by side

SBA groups common business coverage into general liability, product liability, professional liability, commercial property, home-based business riders and the business owner's policy that bundles several of them^[2]. Contractors add a few lines that SBA's general list does not stress. The table shows the full picture.

What the law requires versus what clients require

Legal requirements are a floor. SBA's guide says businesses with employees must carry workers' compensation, unemployment and disability insurance, with details set by each state^[2]. Every state also sets minimum auto liability, and some states require liability coverage and a bond for contractor registration; Washington, for example, requires a $30,000 bond for general contractors and $15,000 for specialty contractors, plus liability coverage^[4].

Client requirements are usually higher and more specific. A property manager may want additional insured status on your GL and auto, a waiver of subrogation and an umbrella. A homeowner may only ask whether you are insured. Write down the strictest requirement you see in a year and build your program to meet it, rather than buying endorsements one contract at a time.

Which policies to add as you grow

1. 01

   Solo owner-operator

   General liability, commercial auto on the work vehicle and tools coverage. Check whether your state lets owners exclude themselves from workers' compensation and what clients will accept.

2. 02

   First employee

   Workers' compensation from the first day of work, payroll registrations and employer's liability. Review job classifications with your agent so the premium matches the work.

3. 03

   Second and third vehicle

   Move to a commercial fleet policy, collect motor vehicle records for every driver and add hired and non-owned auto for anyone using a personal car.

4. 04

   First commercial or property management contract

   Add blanket additional insured, primary and non-contributory and waiver of subrogation endorsements, and consider an umbrella.

5. 05

   Advice, design or inspection services

   Add professional liability or E&O if you sell load calculations, energy audits, inspections or designs that others rely on.

6. 06

   Chemicals, water or refrigerants

   Ask about pollution liability, since many GL policies exclude pollution and mold.

How premiums are set and what you can control

Each line is priced on a different exposure base. General liability is usually rated on revenue or payroll by class code. Workers' compensation is rated on payroll in each job classification, adjusted by your claims history once you are large enough for an experience modifier. Commercial auto is rated on vehicles, garaging location, radius of operation and the driving records of everyone you list. Tools coverage is rated on the values you schedule.

• Classify payroll honestly and split it correctly: office staff and sales roles usually carry much lower workers' compensation rates than field technicians.
• Pull motor vehicle records before hiring drivers and set a written standard for what disqualifies someone from driving a company vehicle.
• Install telematics or dash cameras where drivers accept them; some insurers credit them and they settle disputed crash claims faster.
• Keep a written safety program: ladder inspections, fall protection for roof work, lifting technique for heavy equipment and a return-to-work plan for injured staff.
• Report small claims promptly. Late reporting raises costs and can jeopardize coverage.
• Raise deductibles on property and tools coverage only if you can absorb several small losses in one year.

Questions to ask before you sign

1. Which of my services are listed in the class codes, and which are not?
2. Is completed operations coverage included, and for how long after a job?
3. Are there exclusions for subcontractors, residential work, height, mold or pollution?
4. Do my additional insured endorsements cover both ongoing and completed work?
5. Does the umbrella follow the form of my auto and employer's liability policies?
6. How are tools in employees' personal vehicles treated?
7. What does the year-end payroll audit look at, and how do I avoid a surprise bill?

Example: a landscaping company builds its program

Example (fictional): a lawn and landscape company has the owner, six seasonal employees, three trucks and two trailers of mowers. It started with a GL policy and personal auto on the owner's truck. After a trailer was stolen from a job site, the owner met an agent and rebuilt the program: commercial auto on all three trucks with driver records on file, an inland marine schedule listing each mower and trimmer by serial number, workers' compensation classified correctly for lawn care and tree work, and a pollution endorsement because the crews apply fertilizer and herbicide.

Later in the example, a homeowners association asked for a $1 million umbrella and additional insured status before awarding a three-year contract. Because the program was already organized, the agent issued the certificate in a day. The owner's rule now is simple: any new service line, vehicle or contract clause goes to the agent before the first job, not after the first claim.

Annual insurance review checklist

• Update revenue, payroll by job class and headcount; underreporting creates audit bills.
• Send a current list of vehicles and drivers, and remove anyone who has left.
• Refresh the tools and equipment schedule with serial numbers and replacement values.
• List new services added this year and confirm each is covered by your class codes.
• Collect the insurance clauses from your largest contracts and check the endorsements still match.
• Review every claim and near miss, and what you changed afterwards.
• Confirm subcontractors' certificates are current; uninsured subs can end up on your policy.

The deeper guides on general liability, certificates of insurance and license and surety bonds cover each piece in more detail.