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Mass Layoffs, Reductions in Force and Plant Closings: Illinois

Mass Layoffs, Reductions in Force and Plant Closings requirements for other states

Federal law and guidance on this subject should be reviewed together with this section.

Authors: Stuart R. Buttrick, Susan W. Kline, Stacey Smiricky and Lindsey M. Hogan, Faegre Drinker Biddle & Reath LLP


  • Certain employers must provide notice when the employer anticipates mass layoffs, relocation or a plant closing. See Illinois WARN Act.
  • Illinois employers that violate the state mini-WARN Act are liable to all affected employees who lost their employment. See Penalties and Enforcement.