General Liability vs Professional Liability
General Liability (GL) and Professional Liability (also called Errors & Omissions or E&O) are the two most common third-party liability policies for service businesses — and they cover fundamentally different kinds of claims.
The plain-English split: GL covers physical harm to people or their property caused by your business operations or premises (a client slips in your office, a contractor damages a customer's wall). Professional Liability covers economic harm caused by mistakes in your professional work (you give bad advice, miss a deadline, or deliver a deliverable that didn't perform as promised).
For most service-based businesses (consultants, IT/tech, marketing, accounting, design, financial services, healthcare providers), the answer is not 'pick one' — it's 'you need both, and they shouldn't be mistaken for each other.'
Side-by-side
| Dimension | General Liability (GL) | Professional Liability (E&O) |
|---|---|---|
| What it covers | Physical claims: bodily injury, property damage, personal & advertising injury caused by your business operations or premises. |
Economic claims: negligence, errors, omissions, missed deadlines, failure to deliver, bad advice — situations where your professional work allegedly caused a client to lose money. |
| Claim example | A delivery driver visiting your office trips on a loose mat and breaks a wrist. Their medical bills + lost wages = $30K. GL responds. |
You're a marketing consultant. You build a campaign that fails to perform. The client sues for the $80K they paid you plus alleged lost revenue. PL responds. |
| Who needs it | Effectively every business that has a physical location, has employees who go to client sites, or has any in-person customer contact. Often required by leases and client contracts. |
Any business that gives advice or delivers professional services (consultants, IT, accounting, marketing, design, healthcare providers, real estate agents, financial advisors, attorneys). |
| What it does NOT cover | Claims based on the quality of your professional work. Cyber claims. Employee injuries (those are workers comp). Owned property damage. |
Physical injury or property damage to third parties. Cyber claims. Employee disputes (EPLI). Intentional wrongdoing. |
| Where it's required | Many client contracts and certificates of insurance (COIs) require GL with $1M / $2M aggregate limits. Most commercial leases require GL. |
Required by many client contracts in consulting, IT, financial services, and healthcare. Some state professional-licensing bodies (medical, legal, real estate) require PL. |
| Coverage trigger | Occurrence-based: covers claims if the incident occurred during the policy period, regardless of when filed. |
Claims-made: covers claims filed during the policy period — must keep coverage active or buy a 'tail' to cover post-cancellation claims. |
Bottom line
Most service-based small businesses need both. GL won't pay if your work caused financial loss; PL won't pay if someone trips in your office. Carriers commonly offer them as a bundle, and bundling is usually 10–20% cheaper than buying separately.
If you operate purely digitally with no physical client contact and no professional advice given (e.g., e-commerce dropshipper), you may be able to skip PL — but you almost certainly still need GL for product liability and general business operations.
Check our GL pillar + Professional Liability pillar for the full coverage breakdown, or comparison shop your specific situation.
Related guides
Sources cited
- Commercial general liability policy (CGL) — International Risk Management Institute (IRMI), 2024
- Professional liability insurance / errors and omissions (E&O) — International Risk Management Institute (IRMI), 2024