It’s not the same as quitting, at all, from a legal standpoint. You still have your job, and need to be paid, until they fire you, and once they fire you, you can fight for unemployed. Never quit. You’re basically willingly giving away your rights as a worker.

The employer knows this. They’ll often try and trick you by saying “if you don’t show up, you’re quitting” or something like that, make it clear you did not quit.