In NYS shouldn't they at least give you some sort of heads up when firing an employee?

I basically found out yesterday from a few people I work with that I was getting fired… but apparently they changed the schedule and I haven’t been on it since Thursday. When I texted my manager asking what was going on, he acted completely oblivious to everything and told me to come in for my regular shift(which hasn’t existed since Thurs.) on Monday, being today. I then talked to the person who’s shift I usually take over, if they’d be closing today(Monday) they said yes.

So I guess I’ve been fired since Thursday but my manager just hasn’t gotten around to telling me yet?

Shouldn’t I have at least gotten a phone call or something when they decided to do this? Stating that they’re firing me and I should come in asap or something?

I don’t know much about the legal system or labor laws for NYS, which is why I figured I’d ask on here, to see if anyone knew anything.