Legal Question in Employment Law in California

You can sue them now. You could sue them the day you were fired. Doesn't mean you have a case, but you could have sued them at any time.

Not only are there no laws against 'unfair treatment' or poor management, but in general, unless an employee is civil service, in a union, or has a written employment contract, they are an 'at will' employee that can be disciplined or fired any time for any reason, with or without ‘cause’, explanation or notice, unless it is based upon illegal discrimination, harassment or retaliation under the ADA disability, Civil Rights [age, race, sex, ethnic, religion, pregnancy, etc], Whistle-blower, or similar statutes. The employee's goal should be to keep the employer happy and make the company money. That’s how they pay your wages. Now if the firing was illegal under those definitions, feel free to contact me for the legal help you’ll need.