I wasn't fired just was told they couldn't pay me more. Then called me back later that evening and said they wouldn't need me that next day. I was mainly trying to find out what I could do about the fact they were only paying me 7.25 an hr for full time 30+ hrs a week.
If what you seek is several days pay difference small claims court is your answer. But, if you asked about your rate of pay and they told you they didn't need you,you have been fired for asking and have a retaliation claim.