What is Professional Liability Insurance (PL)?

LIABILITY INSURANCE

Professional liability insurance (PL) definition

Professional liability insurance is cover that protects professionals against claims arising from negligence, errors or omissions in their services.

In practice, this means insurance cover purchased by professionals to protect themselves against legal liability to pay damages and costs to third parties who have suffered economic loss as a result of the insured’s error, omission, or breach of professional duty. This gives insurers, brokers, reinsurers and risk managers a shared way to discuss the concept when reviewing policies, claims, regulation or market data.

This term is especially useful in liability insurance, claims handling and policy wording. It helps assess legal responsibility, claim response and protection against third-party or employee claims. It also helps users compare how insurance is structured, regulated, priced or claimed across different markets.

Professional liability insurance (PL) is closely related to errors and omissions, professional indemnity, liability insurance and negligence. Linking these concepts together helps build a clearer glossary structure and gives readers a stronger understanding of how individual insurance terms connect within wider international insurance practice.

At a glance

Used in
Liability insurance, claims handling and policy wording.
Purpose
Helps assess legal responsibility, claim response and protection against third-party or employee claims.
Important because
Clear definitions support better comparison of insurance products, market practices and regulatory requirements across jurisdictions.
Related terms
errors and omissions, professional indemnity, liability insurance and negligence.

Example of professional liability insurance

An architect makes a design error that leads to financial loss for a client. Professional liability insurance may respond to the claim, subject to the policy wording.

Related glossary terms