Since MS let go of greater than 250 full-time employees, weren't they required to give a full 90-day notice before these layoffs?
Under the New York State Worker Adjustment and Retraining Notification Act ("NYS WARN"), private employers with 50 or more full-time employees in New York State must provide at least 90 calendar days advance written notice for the following events.
Mass Layoff: occurs when, over a 30-day period, a reduction-in-force results in an "employment loss" of more than six months for: (a) at least 25 full-time employees who represent at least 33% of all employees at the site; OR (b) at least 250 full-time employees;
Maybe it was only 249 people in NY
https://www.nyc.gov/site/wkdev/workforce-board/warn-notices.page