Unless you have a contract—like, a real one, signed in ink—you’re likely an “at-will” employee. That’s a fancy way of saying your boss can cut your hours for any reason. Or no reason at all.
They can even do it because they don’t like your smile. Rude. But legal, in most cases. So a simple “I don’t feel like scheduling you” isn’t grounds for a lawsuit. It just feels like a gut punch.
Think of it this way: if you can quit without warning, they can cut your hours without warning. It’s the ugly, unspoken handshake of American labor law.