layoff. The termination of employment at the employer’s instigation; esp., the termination — either temporary or permanent — of many employees in a short time. — Also termed reduction in force. — lay off,vb.

mass layoff.Labor law. Under the Worker Adjustment and Retraining Notification Act, a reduction in force that results in the loss of work at a single site, of 30 days or more, for at least 500 full-time employees, or 50 or more full-time employees if they make up at least 33% of the employees at that site. 29 USCA § 2101(a)(3). See WORKER ADJUSTMENT AND RETRAINING NOTIFICATION ACT. [Cases: Labor Relations  7.1.]

[Blacks Law 8th]