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Coverage guide

Professional liability insurance (errors and omissions)

Professional liability, also called errors and omissions (E&O), covers claims that a mistake, oversight, or failure to deliver a professional service cost a client money. General liability is built for injuries and property damage, not for financial loss from your work, so service businesses often need both.

What professional liability commonly covers

Who usually carries it

  • Consultants, designers, engineers, and other advice-based businesses
  • Design-build contractors and businesses that provide plans or specifications
  • Technology, accounting, real estate, and marketing firms
  • Businesses whose client contracts require it

Commonly covered

  • Claims of negligence, errors, or omissions in your professional services
  • Claims that you failed to deliver what you promised
  • Legal defense costs, which some policies include within the limit

Commonly excluded or limited

  • Bodily injury and property damage (general liability)
  • Intentional or fraudulent acts
  • Claims made after the policy ends, unless an extended reporting period applies
  • Work performed before the policy's retroactive date

This page is general information about how these policies commonly work. Every policy's own forms, endorsements, and exclusions decide what it covers. For advice about your business, talk with a licensed insurance agent.

Before your renewal or your next contract

What to check on your own policy

  • Whether the policy is claims-made, and the retroactive date
  • Whether defense costs reduce the limit
  • The description of your professional services, matched to what you actually do
  • Contract requirements for limits and duration of coverage after a project
  • Extended reporting options if you change carriers or close the business

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Professional liability questions

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