Merck is being sneaky about the WARN now, Making certain to only let go less than 100 people per month per "facility". Lower Gwynedd is a different facility than West Point, and from Bluebell, Whitehouse is different from Summit, and Rahway.
it is 1 month pay and they about 2 weeks per year depending on your band level. you get paid for accrued vacation (whole days only) then depending on your age you may get bridged to retirement. Which means paying about $100 dollars less than COBRA/month after your severance benefits are up.
Well if you are lucky you might get a job with Astrazeneca oh wait maybe not...
Just remember Mother Merck's new motto BOHICA!