WARN Act: Definition Meaning of Plant Closing

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Plant Closing:

A plant closing means the permanent or temporary shutdown of a single site of employment, or one or more facilities or operating units within a single site of employment, if the shutdown results in an employment loss at the single site of employment during any 30-day period for 50 or more employees, excluding part-time employees.

All of the employment losses do not have to occur within the unit that is shut down.

For example, if an employer closes its accounting department and lays off 40 workers and the employer also lays off 10 clerical workers who provided support to the accounting department but were not part of it, a covered plant closing has occurred.