IEBS - WARN Layoff

    Updated at December 9th, 2024

    What is a WARN Layoff?

    The Illinois law is very similar to the Federal WARN act. However, there are some important differences between the two laws:

    • Federal WARN - Applies to employer with 100 or more full-time workers. 
      • Definition of “Mass Layoff” triggering notice requirements:
        • 50 or more full-time employees are laid off if they constitute one-third or more of the full-time employees at the site, or
        • 500 or more full-time employees
    • Illinois WARN - Applies to employer with 75 or more full-time workers.
      • Definition of “Mass Layoff” triggering notice requirements:
        • 25 or more full-time employees are laid off if they constitute one-third or more of the full-time employees at the site, or 
        • 250 or more full-time employees