FIRST - are they taking the normal deductions out of that FINAL severance check? (401K, HSA contribution, the additional life and AD&D we pay for, ESPP). I hope they don't take that out of the final LUMP SUM severance check.
SECOND - be prepared to get the c-ap taxed out of your last check since it's a lump sum and will push your taxes into some ridiculous % bracket due to the gross pay amount.
THIRD - has anyone challenged the fact that if you've completed an odd # years employment you're only getting paid for the even # of years prior to your completion time. So if you complete 11,13 or 15 (grade 20-26) years you're only getting severance for 10,12 or 14 years but yet the person who completes 0-3 years are getting the full 3 weeks severance. So if you've got an odd # of completed years under your belt, you are getting screwed even though the package clearly states "you are credited with a year of service for each 12-consecutive-month period".