If you lived in Massachusetts, they would pay you the required four hours pay on the day they terminated you --that's all. You would then be eligible for unemployment compensation and you need to stand in line for a couple of hours and fill out some paperwork. Eventually, you will get to speak to a person who will advise you about signing in over the Internet and collecting a small check each week.
There is no requirement for an employer to give an employee any notice whatsoever unless the company is terminating more than 9.999 percent of its workforce. However, in that case most companies simply have two layoffs so they do not have to let anyone know until the final hour. Generally, you get paid to the last hour you worked and you get paid for any accrued vacation time. The company is not even required to provide severance pay that may be stated in its employee manual (if any). That is because the company reserves the right to alter that manual's content at any time.
Have fun.
February 21