To assist class action defense attorneys anticipate the types of cases against which they may have to defend in California, we provide weekly, unofficial summaries of the legal categories for new class action lawsuits filed in California state and federal courts in the Los Angeles, San Francisco, San Jose, Sacramento, San Diego, San Mateo, Oakland/Alameda and Orange County areas. We include only those categories that include 10% or more of the class action filings during the relevant timeframe. This report covers the time period from October 19 – October 25, 2007, during which time 48 new class action lawsuits were filed in these California state and federal courts. Generally, more labor law class action lawsuits are filed than any other category of cases, and this past week was no exception with the filing of 25 new class actions alleging employment law claims (52% of the new class action filings for the week). Only one other category managed to break the 10% threshold for this weekly class action report; there were ten (10) new antitrust class action lawsuits filed (21%).