'Earned' Vacation time is a liability to the company and something you're due when you leave, and paid with in a reasonable amount of time. I don't think this varies state-to-state but I've been wrong before.
Careful... Again, unless otherwise provided in writing by the employer, there is no law anywhere in any state that says an employee is "due" their accrued leave upon separation. Accrued leave is indeed a liability on the balance sheet, which is why most employers have a "use-it-or-lose-it" policy. Our employees (including me) lose all unused PTO on January 15th of each year. Liability gone.
It may be semantics or splitting hairs, but I believe this is one reason companies may use the term 'PTO' or Personal Time Off as opposed to 'Vacation' in some instances. I think they're may be a legal difference.
We discussed changing our 'terminology' last year but didn't do anything other than increase the number of 'sick days', which in our case is considered 'PTO'. Those Sick or PTO days are use it or lose it and are not acruable, where as vacation is up to a point in our case.
I do believe the employee is 'entitled' to any, earned yet unused or acrued vacation, which is not necessarily the same as PTO.
Then again, I'm not an HR Specialist, nor do I pretend to be one. I only have my experiences from which to speak.
Glad to hear it will work out for the thread starter.