What Is E&O Insurance?
E&O — short for errors and omissions insurance, also called professional liability insurance — pays defense costs and damages when a client alleges your professional work caused them financial harm. The "errors and omissions" name reflects the two core claim types: errors (something you did wrong) and omissions (something you should have done but didn't).
It's the single most important coverage for any professional who sells advice, recommendations, or services. A standard general liability policy will not cover financial harm caused by your work — only physical injury and property damage to third parties. If a marketing consultant's SEO recommendations cost a client $50K in lost revenue, general liability won't respond. E&O will. The same is true for missed deadlines, breach of contract, professional negligence, and unintentional errors in deliverables.