The terminations have sowed more confusion at the bureau; several of those being laid off had already accepted federal buyout offers, said a person familiar.
Spirit on Tuesday rejected Frontier's revised acquisition offer, worth about $2.16 billion, saying the bid was less beneficial than its reorganization plan.
Workers feel a disproportionately high degree of layoff anxiety, reports show. But there are ways to use that fear to better position yourself in the job market.