Trusted AI built on 175 years of Thomson Reuters knowledge. Meet The CoCo

Worker Adjustment and Retraining Notification (WARN) Act: Overview

by Stephen R. Woods, Ogletree, Deakins, Nash, Smoak & Stewart, P.C., with Practical Law Labor & Employment

Maintained | USA (National/Federal)

A Practice Note describing notice requirements under the federal Worker Adjustment and Retraining Notification Act (WARN Act) in cases of plant closings and mass layoffs, including triggering events, and exceptions. This Note addresses federal law. For information on state law requirements, see the State Q&A Tools under Related Content.

Get access to this document with Practical Law

Why Practical Law?

Gain a built-in attorney network

Practical Law’s resources are written and maintained by over 650 dedicated, full-time attorney-editors globally. They’re highly qualified, having practiced at the world’s leading law firms, corporate law departments, and government agencies, so they understand the challenges you face. They dedicate themselves to creating resources to help you navigate the new legal realities, legislative changes, and practice areas impacting your clients or organization.

See how to leverage the expertise of Practical Law’s attorney-editors to help you practice more efficiently.

Expert guidance

650+ full-time, experienced attorney-editors keep you up to date globally

Total resources

118,000+ total resources across 17 practice areas ensure comprehensive coverage

Timely updates 

150,000+ hours spent in 2025 maintaining and updating resources

Experience Practical Law