Rapid response must be delivered when one or more of the following circumstances occur:
- (a) Announcement or notification of a permanent closure, regardless of the number of workers affected;
- (b) Announcement or notification of a mass layoff as defined in § 682.305;
- (c) A mass job dislocation resulting from a natural or other disaster; or
- (d) The filing of a Trade Adjustment Assistance (TAA) petition.