Each employment discrimination lawsuit may take up to a year to litigate. Depending on the case, it can go anywhere between 6 months and 2 years. So how long does an average case last in California? Based on the statistical data, you should take one year as a valid time frame. br br If you have a case of wrongful termination, at Rager Law Offices, Los Angeles Wrongful Termination attorney is available to help you file a claim and guide you through the legal process.