Collects novel and timely data from advance layoff notices filed under the Worker Adjustment and Retraining Notification (WARN) Act. The act requires larger employers to notify affected workers at least 60 days before a potential mass layoff. Assembles WARN data from across the United States, and for many large states our data begin in the 1990s. Aggregates these data into an unbalanced, monthly panel of the state-level number of workers affected by WARN notices, and updated this panel twice a month. Also aggregates this panel to a national-level indicator of job loss (the "WARN factor") using a dynamic factor model. Updated twice a month by collecting WARN notices from state websites. For many states, extended historical data by using digital archives of the internet and contacting state officials.
Geographic Unit: State
