My 2 cents... The non-disparagement is a trade. You trade not saying anything bad about them publicly, and they agree not to say anything bad about you during a reference check. You get a positive (or perhaps generic "He worked here from X to Y, that's all we can say") reference, and they don't have to worry about a book coming out trashing them. The amount of cash is secondary. The real thing is, if you want to remain on good terms with them, you sign it. If not, you don't.
I can't imagine a company offering severance nowadays without including this. 2 weeks may be negotiable, but this won't be.
I can't imagine a company offering severance nowadays without including this. 2 weeks may be negotiable, but this won't be.