this question is not governed by the law, it is governed by the employer, at their whim. Unless you have a written contract that so specifies, no employer must pay any severance pay - not one penny. This is also at the whim of the employer. Your new company may not have a severance plan. Ask yourself: Is 75% better than nothing, including no severance pay? You could have a frank discussion with your employer about what severance plan is available, if you leave now, right now. Unless you accept and receive the payment, they can change this later.
Answered on Nov 20th, 2013 at 12:07 PM