Earlier quoted context omitted.
It's mainly a way to avoid having to pay out unemployment insurance: it provides documentation that you were fired "for cause". Most US companies do it, so you can't ever really count on getting unemployment benefits.
My wife and I own a business in a rather pro-employer state and even our DOL does not consider being bad at your job just cause for denying unemployment. We had an employee use company resources to actively plan opening a competing business half a mile away and still lost our request that he be denied unemployment benefits after we fired him for gross misconduct. If you get unemployment benefits denied, especially in…
My point is that you should NEVER count on getting it, and especially not with getting in quickly. I got laid off in Michigan and was eventually accepted, but by that point I had burned through all my savings (I was pretty young, so there wasn't much to burn through) and already accepted a job here in Texas. It was a nice bonus, but didn't really help me with my unemployment situation in any way.