Legal Question in Employment Law in California

The didn't fire you for "absolutely no reason". Either you didn't believe the reason they gave you or didn't think it was fair.

Unless you belong to a union, you are an "at will" employed. They generally don't need a reason to fire you. If you feel that they fired you for an illegal reason such as racial discrimination, then you should see a local employment law attorney.

In general, unless you are civil service, in a union or have a written employment contract, you are an 'at will' employee that can be disciplined or fired any time for any reason, other than illegal discrimination under the Civil Rights, or Whistle-blower, or similar statutes. Your goal should be to keep your employer happy with you.

Now, if you have credible grounds under those theories of 'illegal' firing, feel free to contact me.