Retention Bonus

The company really didn't want you to leave. You're an engineer who codes in dot-net, an ancient and terrible computer coding language developed by Microsoft to show off MSFT product and make users rely on it, more than just be a good language for developers. Your company is converting from dot-net to Java and Python, the languages of the masses. They need your cooperation, even though you're going to be let go in the next year.

So they give you a retention bonus of $50k, payable April 18th of next year (it's now October), if you stay an employee in good standing at the company and get that code ported properly.