What you're actually owed.

There is no weeks-per-year rule. Courts set severance by your age, your role, and your length of service. For most people it's measured in months.

Your bonus, commissions, benefits, and pension count too. An offer built on salary alone is almost always too low.

The minimum the law allows is the floor, not the real number. Most employees are owed the common law amount, which sits on top of it.

Their deadline, not yours. Your claim is good for two years. Deadlines like this exist to get a signature before you get advice.

The only sentence in the letter you can't undo. Everything above it can still change. This one can't, once you sign.